详解python中GPU版本的opencv常用方法介绍

阳光穿透心脏的1/2处 2022-12-21 11:58 301阅读 0赞

更多编程教程请到：[菜鸟教程][Link 1] https://www.piaodoo.com/

友情链接：[好看站][Link 2] http://www.nrso.net/

[高州阳光论坛][Link 3]https://www.hnthzk.com/

引言

本篇是以python的视角介绍相关的函数还有自我使用中的一些问题，本想在这篇之前总结一下opencv编译的全过程，但遇到了太多坑，暂时不太想回看做过的笔记，所以这里主要总结python下GPU版本的opencv。

主要函数说明

threshold()：二值化，但要指定设定阈值  
blendLinear()：两幅图片的线形混合  
calcHist()  
createBoxFilter ()：创建一个规范化的2D框过滤器  
canny边缘检测  
createGaussianFilter()：创建一个Gaussian过滤器  
createLaplacianFilter()：创建一个Laplacian过滤器  
createLinearFilter()：创建一个线形过滤器  
createMorphologyFilter()：形态学运算滤波器；腐蚀、开、关等操作  
createSolbelFilter()：创建一个solbel过滤器  
createHougnCirclesDetector()：创建一个霍夫原检测器  
createMedianFilter()：创建一个中值滤波过滤器  
createTemplateMatching()：模板匹配  
cvtColor()：颜色空间转换  
dft()：执行浮点矩阵的正向或逆离散傅里叶变换  
drawColorDisp()：颜色差异图像  
equalizeHist()：将灰度图像的直方图均衡化  
findMinMax()  
findMinMaxLoc()  
flip()：翻转二维矩阵  
merge()：用几个单通道矩阵构成一个多通道矩阵  
split()：将多通道矩阵分离成多个单通道矩阵  
getCudaEnabledDeviceCount()：获取可用的gpu数目  
getDevice()：返回由cuda::setDevice或默认初始化的当前设备索引  
printCudaDeviceInfo()  
resetDevice()：显示地销毁和清理与当前进程中当前设备相关的所有资源  
setDevice()：设置一个device并为当前线程初始化它；如果省略次函数的调用，则在第一次CUDA使用时初始化默认设备  
remap()：对图像应用一般的几个变换  
resize()：调整一个图像大小  
rotate()：在原点(0,0)周围旋转一个图像，然后移动它  
sum()：返回矩阵元素的和

上述是在cv2.cuda下总结出来的一些可以使用的方法，因为底层是C++，并且python主要调用的是cv2.so文件，如果我们想要看到一个对象到底有什么样的作用还有一系列的使用方式，我们可以利用python的魔法方法\_\_dir\_\_ 与help查看：

$ dir(cv2.cuda) 
    """
    ['ALPHA_ATOP', 'ALPHA_ATOP_PREMUL', 'ALPHA_IN', 'ALPHA_IN_PREMUL', 'ALPHA_OUT', 'ALPHA_OUT_PREMUL', 'ALPHA_OVER', 'ALPHA_OVER_PREMUL', 'ALPHA_PLUS', 'ALPHA_PLUS_PREMUL', 'ALPHA_PREMUL', 'ALPHA_XOR', 'ALPHA_XOR_PREMUL', 'BroxOpticalFlow_create', 'COLOR_BAYER_BG2BGR_MHT', 'COLOR_BAYER_BG2GRAY_MHT', 'COLOR_BAYER_BG2RGB_MHT', 'COLOR_BAYER_GB2BGR_MHT', 'COLOR_BAYER_GB2GRAY_MHT', 'COLOR_BAYER_GB2RGB_MHT', 'COLOR_BAYER_GR2BGR_MHT', 'COLOR_BAYER_GR2GRAY_MHT', 'COLOR_BAYER_GR2RGB_MHT', 'COLOR_BAYER_RG2BGR_MHT', 'COLOR_BAYER_RG2GRAY_MHT', 'COLOR_BAYER_RG2RGB_MHT', 'COLOR_BayerBG2BGR_MHT', 'COLOR_BayerBG2GRAY_MHT', 'COLOR_BayerBG2RGB_MHT', 'COLOR_BayerGB2BGR_MHT', 'COLOR_BayerGB2GRAY_MHT', 'COLOR_BayerGB2RGB_MHT', 'COLOR_BayerGR2BGR_MHT', 'COLOR_BayerGR2GRAY_MHT', 'COLOR_BayerGR2RGB_MHT', 'COLOR_BayerRG2BGR_MHT', 'COLOR_BayerRG2GRAY_MHT', 'COLOR_BayerRG2RGB_MHT', 'CascadeClassifier_create', 'DEVICE_INFO_COMPUTE_MODE_DEFAULT', 'DEVICE_INFO_COMPUTE_MODE_EXCLUSIVE', 'DEVICE_INFO_COMPUTE_MODE_EXCLUSIVE_PROCESS', 'DEVICE_INFO_COMPUTE_MODE_PROHIBITED', 'DYNAMIC_PARALLELISM', 'DensePyrLKOpticalFlow_create', 'DescriptorMatcher_createBFMatcher', 'DeviceInfo_ComputeModeDefault', 'DeviceInfo_ComputeModeExclusive', 'DeviceInfo_ComputeModeExclusiveProcess', 'DeviceInfo_ComputeModeProhibited', 'EVENT_BLOCKING_SYNC', 'EVENT_DEFAULT', 'EVENT_DISABLE_TIMING', 'EVENT_INTERPROCESS', 'Event_BLOCKING_SYNC', 'Event_DEFAULT', 'Event_DISABLE_TIMING', 'Event_INTERPROCESS', 'Event_elapsedTime', 'FEATURE_SET_COMPUTE_10', 'FEATURE_SET_COMPUTE_11', 'FEATURE_SET_COMPUTE_12', 'FEATURE_SET_COMPUTE_13', 'FEATURE_SET_COMPUTE_20', 'FEATURE_SET_COMPUTE_21', 'FEATURE_SET_COMPUTE_30', 'FEATURE_SET_COMPUTE_32', 'FEATURE_SET_COMPUTE_35', 'FEATURE_SET_COMPUTE_50', 'FarnebackOpticalFlow_create', 'FastFeatureDetector_create', 'GLOBAL_ATOMICS', 'GpuMat_defaultAllocator', 'GpuMat_setDefaultAllocator', 'HOG_create', 'HOST_MEM_PAGE_LOCKED', 'HOST_MEM_SHARED', 'HOST_MEM_WRITE_COMBINED', 'HostMem_PAGE_LOCKED', 'HostMem_SHARED', 'HostMem_WRITE_COMBINED', 'NATIVE_DOUBLE', 'NVIDIA_OPTICAL_FLOW_1_0_NV_OF_PERF_LEVEL_FAST', 'NVIDIA_OPTICAL_FLOW_1_0_NV_OF_PERF_LEVEL_MAX', 'NVIDIA_OPTICAL_FLOW_1_0_NV_OF_PERF_LEVEL_MEDIUM', 'NVIDIA_OPTICAL_FLOW_1_0_NV_OF_PERF_LEVEL_SLOW', 'NVIDIA_OPTICAL_FLOW_1_0_NV_OF_PERF_LEVEL_UNDEFINED', 'NvidiaOpticalFlow_1_0_NV_OF_PERF_LEVEL_FAST', 'NvidiaOpticalFlow_1_0_NV_OF_PERF_LEVEL_MAX', 'NvidiaOpticalFlow_1_0_NV_OF_PERF_LEVEL_MEDIUM', 'NvidiaOpticalFlow_1_0_NV_OF_PERF_LEVEL_SLOW', 'NvidiaOpticalFlow_1_0_NV_OF_PERF_LEVEL_UNDEFINED', 'NvidiaOpticalFlow_1_0_create', 'ORB_create', 'OpticalFlowDual_TVL1_create', 'SHARED_ATOMICS', 'SURF_CUDA_ANGLE_ROW', 'SURF_CUDA_HESSIAN_ROW', 'SURF_CUDA_LAPLACIAN_ROW', 'SURF_CUDA_OCTAVE_ROW', 'SURF_CUDA_ROWS_COUNT', 'SURF_CUDA_SIZE_ROW', 'SURF_CUDA_X_ROW', 'SURF_CUDA_Y_ROW', 'SparsePyrLKOpticalFlow_create', 'StereoBeliefPropagation_estimateRecommendedParams', 'StereoConstantSpaceBP_estimateRecommendedParams', 'Stream_Null', 'TargetArchs_has', 'TargetArchs_hasBin', 'TargetArchs_hasEqualOrGreater', 'TargetArchs_hasEqualOrGreaterBin', 'TargetArchs_hasEqualOrGreaterPtx', 'TargetArchs_hasEqualOrLessPtx', 'TargetArchs_hasPtx', 'WARP_SHUFFLE_FUNCTIONS', '__doc__', '__loader__', '__name__', '__package__', '__spec__', 'abs', 'absSum', 'absdiff', 'add', 'addWeighted', 'alphaComp', 'bilateralFilter', 'bitwise_and', 'bitwise_not', 'bitwise_or', 'bitwise_xor', 'blendLinear', 'buildWarpAffineMaps', 'buildWarpPerspectiveMaps', 'calcAbsSum', 'calcHist', 'calcNorm', 'calcNormDiff', 'calcSqrSum', 'calcSum', 'cartToPolar', 'compare', 'copyMakeBorder', 'countNonZero', 'createBackgroundSubtractorMOG', 'createBackgroundSubtractorMOG2', 'createBoxFilter', 'createBoxMaxFilter', 'createBoxMinFilter', 'createCLAHE', 'createCannyEdgeDetector', 'createColumnSumFilter', 'createContinuous', 'createConvolution', 'createDFT', 'createDerivFilter', 'createDisparityBilateralFilter', 'createGaussianFilter', 'createGeneralizedHoughBallard', 'createGeneralizedHoughGuil', 'createGoodFeaturesToTrackDetector', 'createHarrisCorner', 'createHoughCirclesDetector', 'createHoughLinesDetector', 'createHoughSegmentDetector', 'createLaplacianFilter', 'createLinearFilter', 'createLookUpTable', 'createMedianFilter', 'createMinEigenValCorner', 'createMorphologyFilter', 'createRowSumFilter', 'createScharrFilter', 'createSeparableLinearFilter', 'createSobelFilter', 'createStereoBM', 'createStereoBeliefPropagation', 'createStereoConstantSpaceBP', 'createTemplateMatching', 'cvtColor', 'demosaicing', 'dft', 'divide', 'drawColorDisp', 'ensureSizeIsEnough', 'equalizeHist', 'evenLevels', 'exp', 'findMinMax', 'findMinMaxLoc', 'flip', 'gammaCorrection', 'gemm', 'getCudaEnabledDeviceCount', 'getDevice', 'histEven', 'histRange', 'integral', 'log', 'magnitude', 'magnitudeSqr', 'max', 'meanShiftFiltering', 'meanShiftProc', 'meanShiftSegmentation', 'meanStdDev', 'merge', 'min', 'minMax', 'minMaxLoc', 'mulAndScaleSpectrums', 'mulSpectrums', 'multiply', 'norm', 'normalize', 'phase', 'polarToCart', 'pow', 'printCudaDeviceInfo', 'printShortCudaDeviceInfo', 'pyrDown', 'pyrUp', 'rectStdDev', 'reduce', 'registerPageLocked', 'remap', 'reprojectImageTo3D', 'resetDevice', 'resize', 'rotate', 'setBufferPoolConfig', 'setBufferPoolUsage', 'setDevice', 'split', 'sqr', 'sqrIntegral', 'sqrSum', 'sqrt', 'subtract', 'sum', 'threshold', 'transpose', 'unregisterPageLocked', 'warpAffine', 'warpPerspective']
    """

$ GPU\_mat = cv2.cuda\_GpuMat()  
$ dir(GPU\_mat)  
“”"  
\[‘**class**’, ‘**delattr**’, ‘**dir**’, ‘**doc**’, ‘**eq**’, ‘**format**’, ‘**ge**’, ‘**getattribute**’, ‘**gt**’, ‘**hash**’, ‘**init**’, ‘**init\_subclass**’, ‘**le**’, ‘**lt**’, ‘**ne**’, ‘**new**’, ‘**reduce**’, ‘**reduce\_ex**’, ‘**repr**’, ‘**setattr**’, ‘**sizeof**’, ‘**str**’, ‘**subclasshook**’, ‘adjustROI’, ‘assignTo’, ‘channels’, ‘clone’, ‘col’, ‘colRange’, ‘convertTo’, ‘copyTo’, ‘create’, ‘defaultAllocator’, ‘depth’, ‘download’, ‘elemSize’, ‘elemSize1’, ‘empty’, ‘isContinuous’, ‘locateROI’, ‘reshape’, ‘row’, ‘rowRange’, ‘setDefaultAllocator’, ‘setTo’, ‘size’, ‘step’, ‘step1’, ‘swap’, ‘type’, ‘updateContinuityFlag’, ‘upload’\]  
“”"

$ dir(cv2)  
“”"  
\[’’, ‘ACCESS\_FAST’, ‘ACCESS\_MASK’, ‘ACCESS\_READ’, ‘ACCESS\_RW’, ‘ACCESS\_WRITE’, ‘ADAPTIVE\_THRESH\_GAUSSIAN\_C’, ‘ADAPTIVE\_THRESH\_MEAN\_C’, ‘AGAST\_FEATURE\_DETECTOR\_AGAST\_5\_8’, ‘AGAST\_FEATURE\_DETECTOR\_AGAST\_7\_12D’, ‘AGAST\_FEATURE\_DETECTOR\_AGAST\_7\_12S’, ‘AGAST\_FEATURE\_DETECTOR\_NONMAX\_SUPPRESSION’, ‘AGAST\_FEATURE\_DETECTOR\_OAST\_9\_16’, ‘AGAST\_FEATURE\_DETECTOR\_THRESHOLD’, ‘AKAZE’, ‘AKAZE\_DESCRIPTOR\_KAZE’, ‘AKAZE\_DESCRIPTOR\_KAZE\_UPRIGHT’, ‘AKAZE\_DESCRIPTOR\_MLDB’, ‘AKAZE\_DESCRIPTOR\_MLDB\_UPRIGHT’, ‘AKAZE\_create’, ‘AffineTransformer’, ‘AgastFeatureDetector’, ‘AgastFeatureDetector\_AGAST\_5\_8’, ‘AgastFeatureDetector\_AGAST\_7\_12d’, ‘AgastFeatureDetector\_AGAST\_7\_12s’, ‘AgastFeatureDetector\_NONMAX\_SUPPRESSION’, ‘AgastFeatureDetector\_OAST\_9\_16’, ‘AgastFeatureDetector\_THRESHOLD’, ‘AgastFeatureDetector\_create’, ‘Algorithm’, ‘AlignExposures’, ‘AlignMTB’, ‘AsyncArray’, ‘BFMatcher’, ‘BFMatcher\_create’, ‘BORDER\_CONSTANT’, ‘BORDER\_DEFAULT’, ‘BORDER\_ISOLATED’, ‘BORDER\_REFLECT’, ‘BORDER\_REFLECT101’, ‘BORDER\_REFLECT\_101’, ‘BORDER\_REPLICATE’, ‘BORDER\_TRANSPARENT’, ‘BORDER\_WRAP’, ‘BOWImgDescriptorExtractor’, ‘BOWKMeansTrainer’, ‘BOWTrainer’, ‘BRISK’, ‘BRISK\_create’, ‘BackgroundSubtractor’, ‘BackgroundSubtractorKNN’, ‘BackgroundSubtractorMOG2’, ‘BaseCascadeClassifier’, ‘CALIB\_CB\_ACCURACY’, ‘CALIB\_CB\_ADAPTIVE\_THRESH’, ‘CALIB\_CB\_ASYMMETRIC\_GRID’, ‘CALIB\_CB\_CLUSTERING’, ‘CALIB\_CB\_EXHAUSTIVE’, ‘CALIB\_CB\_FAST\_CHECK’, ‘CALIB\_CB\_FILTER\_QUADS’, ‘CALIB\_CB\_NORMALIZE\_IMAGE’, ‘CALIB\_CB\_SYMMETRIC\_GRID’, ‘CALIB\_FIX\_ASPECT\_RATIO’, ‘CALIB\_FIX\_FOCAL\_LENGTH’, ‘CALIB\_FIX\_INTRINSIC’, ‘CALIB\_FIX\_K1’, ‘CALIB\_FIX\_K2’, ‘CALIB\_FIX\_K3’, ‘CALIB\_FIX\_K4’, ‘CALIB\_FIX\_K5’, ‘CALIB\_FIX\_K6’, ‘CALIB\_FIX\_PRINCIPAL\_POINT’, ‘CALIB\_FIX\_S1\_S2\_S3\_S4’, ‘CALIB\_FIX\_TANGENT\_DIST’, ‘CALIB\_FIX\_TAUX\_TAUY’, ‘CALIB\_HAND\_EYE\_ANDREFF’, ‘CALIB\_HAND\_EYE\_DANIILIDIS’, ‘CALIB\_HAND\_EYE\_HORAUD’, ‘CALIB\_HAND\_EYE\_PARK’, ‘CALIB\_HAND\_EYE\_TSAI’, ‘CALIB\_NINTRINSIC’, ‘CALIB\_RATIONAL\_MODEL’, ‘CALIB\_SAME\_FOCAL\_LENGTH’, ‘CALIB\_THIN\_PRISM\_MODEL’, ‘CALIB\_TILTED\_MODEL’, ‘CALIB\_USE\_EXTRINSIC\_GUESS’, ‘CALIB\_USE\_INTRINSIC\_GUESS’, ‘CALIB\_USE\_LU’, ‘CALIB\_USE\_QR’, ‘CALIB\_ZERO\_DISPARITY’, ‘CALIB\_ZERO\_TANGENT\_DIST’, ‘CAP\_ANDROID’, ‘CAP\_ANY’, ‘CAP\_ARAVIS’, ‘CAP\_AVFOUNDATION’, ‘CAP\_CMU1394’, ‘CAP\_DC1394’, ‘CAP\_DSHOW’, ‘CAP\_FFMPEG’, ‘CAP\_FIREWARE’, ‘CAP\_FIREWIRE’, ‘CAP\_GIGANETIX’, ‘CAP\_GPHOTO2’, ‘CAP\_GSTREAMER’, ‘CAP\_IEEE1394’, ‘CAP\_IMAGES’, ‘CAP\_INTELPERC’, ‘CAP\_INTELPERC\_DEPTH\_GENERATOR’, ‘CAP\_INTELPERC\_DEPTH\_MAP’, ‘CAP\_INTELPERC\_GENERATORS\_MASK’, ‘CAP\_INTELPERC\_IMAGE’, ‘CAP\_INTELPERC\_IMAGE\_GENERATOR’, ‘CAP\_INTELPERC\_IR\_GENERATOR’, ‘CAP\_INTELPERC\_IR\_MAP’, ‘CAP\_INTELPERC\_UVDEPTH\_MAP’, ‘CAP\_INTEL\_MFX’, ‘CAP\_MSMF’, ‘CAP\_OPENCV\_MJPEG’, ‘CAP\_OPENNI’, ‘CAP\_OPENNI2’, ‘CAP\_OPENNI2\_ASUS’, ‘CAP\_OPENNI\_ASUS’, ‘CAP\_OPENNI\_BGR\_IMAGE’, ‘CAP\_OPENNI\_DEPTH\_GENERATOR’, ‘CAP\_OPENNI\_DEPTH\_GENERATOR\_BASELINE’, ‘CAP\_OPENNI\_DEPTH\_GENERATOR\_FOCAL\_LENGTH’, ‘CAP\_OPENNI\_DEPTH\_GENERATOR\_PRESENT’, ‘CAP\_OPENNI\_DEPTH\_GENERATOR\_REGISTRATION’, ‘CAP\_OPENNI\_DEPTH\_GENERATOR\_REGISTRATION\_ON’, ‘CAP\_OPENNI\_DEPTH\_MAP’, ‘CAP\_OPENNI\_DISPARITY\_MAP’, ‘CAP\_OPENNI\_DISPARITY\_MAP\_32F’, ‘CAP\_OPENNI\_GENERATORS\_MASK’, ‘CAP\_OPENNI\_GRAY\_IMAGE’, ‘CAP\_OPENNI\_IMAGE\_GENERATOR’, ‘CAP\_OPENNI\_IMAGE\_GENERATOR\_OUTPUT\_MODE’, ‘CAP\_OPENNI\_IMAGE\_GENERATOR\_PRESENT’, ‘CAP\_OPENNI\_IR\_GENERATOR’, ‘CAP\_OPENNI\_IR\_GENERATOR\_PRESENT’, ‘CAP\_OPENNI\_IR\_IMAGE’, ‘CAP\_OPENNI\_POINT\_CLOUD\_MAP’, ‘CAP\_OPENNI\_QVGA\_30HZ’, ‘CAP\_OPENNI\_QVGA\_60HZ’, ‘CAP\_OPENNI\_SXGA\_15HZ’, ‘CAP\_OPENNI\_SXGA\_30HZ’, ‘CAP\_OPENNI\_VALID\_DEPTH\_MASK’, ‘CAP\_OPENNI\_VGA\_30HZ’, ‘CAP\_PROP\_APERTURE’, ‘CAP\_PROP\_AUTOFOCUS’, ‘CAP\_PROP\_AUTO\_EXPOSURE’, ‘CAP\_PROP\_AUTO\_WB’, ‘CAP\_PROP\_BACKEND’, ‘CAP\_PROP\_BACKLIGHT’, ‘CAP\_PROP\_BRIGHTNESS’, ‘CAP\_PROP\_BUFFERSIZE’, ‘CAP\_PROP\_CHANNEL’, ‘CAP\_PROP\_CONTRAST’, ‘CAP\_PROP\_CONVERT\_RGB’, ‘CAP\_PROP\_DC1394\_MAX’, ‘CAP\_PROP\_DC1394\_MODE\_AUTO’, ‘CAP\_PROP\_DC1394\_MODE\_MANUAL’, ‘CAP\_PROP\_DC1394\_MODE\_ONE\_PUSH\_AUTO’, ‘CAP\_PROP\_DC1394\_OFF’, ‘CAP\_PROP\_EXPOSURE’, ‘CAP\_PROP\_EXPOSUREPROGRAM’, ‘CAP\_PROP\_FOCUS’, ‘CAP\_PROP\_FORMAT’, ‘CAP\_PROP\_FOURCC’, ‘CAP\_PROP\_FPS’, ‘CAP\_PROP\_FRAME\_COUNT’, ‘CAP\_PROP\_FRAME\_HEIGHT’, ‘CAP\_PROP\_FRAME\_WIDTH’, ‘CAP\_PROP\_GAIN’, ‘CAP\_PROP\_GAMMA’, ‘CAP\_PROP\_GIGA\_FRAME\_HEIGH\_MAX’, ‘CAP\_PROP\_GIGA\_FRAME\_OFFSET\_X’, ‘CAP\_PROP\_GIGA\_FRAME\_OFFSET\_Y’, ‘CAP\_PROP\_GIGA\_FRAME\_SENS\_HEIGH’, ‘CAP\_PROP\_GIGA\_FRAME\_SENS\_WIDTH’, ‘CAP\_PROP\_GIGA\_FRAME\_WIDTH\_MAX’, ‘CAP\_PROP\_GPHOTO2\_COLLECT\_MSGS’, ‘CAP\_PROP\_GPHOTO2\_FLUSH\_MSGS’, ‘CAP\_PROP\_GPHOTO2\_PREVIEW’, ‘CAP\_PROP\_GPHOTO2\_RELOAD\_CONFIG’, ‘CAP\_PROP\_GPHOTO2\_RELOAD\_ON\_CHANGE’, ‘CAP\_PROP\_GPHOTO2\_WIDGET\_ENUMERATE’, ‘CAP\_PROP\_GSTREAMER\_QUEUE\_LENGTH’, ‘CAP\_PROP\_GUID’, ‘CAP\_PROP\_HUE’, ‘CAP\_PROP\_IMAGES\_BASE’, ‘CAP\_PROP\_IMAGES\_LAST’, ‘CAP\_PROP\_INTELPERC\_DEPTH\_CONFIDENCE\_THRESHOLD’, ‘CAP\_PROP\_INTELPERC\_DEPTH\_FOCAL\_LENGTH\_HORZ’, ‘CAP\_PROP\_INTELPERC\_DEPTH\_FOCAL\_LENGTH\_VERT’, ‘CAP\_PROP\_INTELPERC\_DEPTH\_LOW\_CONFIDENCE\_VALUE’, ‘CAP\_PROP\_INTELPERC\_DEPTH\_SATURATION\_VALUE’, ‘CAP\_PROP\_INTELPERC\_PROFILE\_COUNT’, ‘CAP\_PROP\_INTELPERC\_PROFILE\_IDX’, ‘CAP\_PROP\_IOS\_DEVICE\_EXPOSURE’, ‘CAP\_PROP\_IOS\_DEVICE\_FLASH’, ‘CAP\_PROP\_IOS\_DEVICE\_FOCUS’, ‘CAP\_PROP\_IOS\_DEVICE\_TORCH’, ‘CAP\_PROP\_IOS\_DEVICE\_WHITEBALANCE’, ‘CAP\_PROP\_IRIS’, ‘CAP\_PROP\_ISO\_SPEED’, ‘CAP\_PROP\_MODE’, ‘CAP\_PROP\_MONOCHROME’, ‘CAP\_PROP\_OPENNI2\_MIRROR’, ‘CAP\_PROP\_OPENNI2\_SYNC’, ‘CAP\_PROP\_OPENNI\_APPROX\_FRAME\_SYNC’, ‘CAP\_PROP\_OPENNI\_BASELINE’, ‘CAP\_PROP\_OPENNI\_CIRCLE\_BUFFER’, ‘CAP\_PROP\_OPENNI\_FOCAL\_LENGTH’, ‘CAP\_PROP\_OPENNI\_FRAME\_MAX\_DEPTH’, ‘CAP\_PROP\_OPENNI\_GENERATOR\_PRESENT’, ‘CAP\_PROP\_OPENNI\_MAX\_BUFFER\_SIZE’, ‘CAP\_PROP\_OPENNI\_MAX\_TIME\_DURATION’, ‘CAP\_PROP\_OPENNI\_OUTPUT\_MODE’, ‘CAP\_PROP\_OPENNI\_REGISTRATION’, ‘CAP\_PROP\_OPENNI\_REGISTRATION\_ON’, ‘CAP\_PROP\_PAN’, ‘CAP\_PROP\_POS\_AVI\_RATIO’, ‘CAP\_PROP\_POS\_FRAMES’, ‘CAP\_PROP\_POS\_MSEC’, ‘CAP\_PROP\_PVAPI\_BINNINGX’, ‘CAP\_PROP\_PVAPI\_BINNINGY’, ‘CAP\_PROP\_PVAPI\_DECIMATIONHORIZONTAL’, ‘CAP\_PROP\_PVAPI\_DECIMATIONVERTICAL’, ‘CAP\_PROP\_PVAPI\_FRAMESTARTTRIGGERMODE’, ‘CAP\_PROP\_PVAPI\_MULTICASTIP’, ‘CAP\_PROP\_PVAPI\_PIXELFORMAT’, ‘CAP\_PROP\_RECTIFICATION’, ‘CAP\_PROP\_ROLL’, ‘CAP\_PROP\_SAR\_DEN’, ‘CAP\_PROP\_SAR\_NUM’, ‘CAP\_PROP\_SATURATION’, ‘CAP\_PROP\_SETTINGS’, ‘CAP\_PROP\_SHARPNESS’, ‘CAP\_PROP\_SPEED’, ‘CAP\_PROP\_TEMPERATURE’, ‘CAP\_PROP\_TILT’, ‘CAP\_PROP\_TRIGGER’, ‘CAP\_PROP\_TRIGGER\_DELAY’, ‘CAP\_PROP\_VIEWFINDER’, ‘CAP\_PROP\_WB\_TEMPERATURE’, ‘CAP\_PROP\_WHITE\_BALANCE\_BLUE\_U’, ‘CAP\_PROP\_WHITE\_BALANCE\_RED\_V’, ‘CAP\_PROP\_XI\_ACQ\_BUFFER\_SIZE’, ‘CAP\_PROP\_XI\_ACQ\_BUFFER\_SIZE\_UNIT’, ‘CAP\_PROP\_XI\_ACQ\_FRAME\_BURST\_COUNT’, ‘CAP\_PROP\_XI\_ACQ\_TIMING\_MODE’, ‘CAP\_PROP\_XI\_ACQ\_TRANSPORT\_BUFFER\_COMMIT’, ‘CAP\_PROP\_XI\_ACQ\_TRANSPORT\_BUFFER\_SIZE’, ‘CAP\_PROP\_XI\_AEAG’, ‘CAP\_PROP\_XI\_AEAG\_LEVEL’, ‘CAP\_PROP\_XI\_AEAG\_ROI\_HEIGHT’, ‘CAP\_PROP\_XI\_AEAG\_ROI\_OFFSET\_X’, ‘CAP\_PROP\_XI\_AEAG\_ROI\_OFFSET\_Y’, ‘CAP\_PROP\_XI\_AEAG\_ROI\_WIDTH’, ‘CAP\_PROP\_XI\_AE\_MAX\_LIMIT’, ‘CAP\_PROP\_XI\_AG\_MAX\_LIMIT’, ‘CAP\_PROP\_XI\_APPLY\_CMS’, ‘CAP\_PROP\_XI\_AUTO\_BANDWIDTH\_CALCULATION’, ‘CAP\_PROP\_XI\_AUTO\_WB’, ‘CAP\_PROP\_XI\_AVAILABLE\_BANDWIDTH’, ‘CAP\_PROP\_XI\_BINNING\_HORIZONTAL’, ‘CAP\_PROP\_XI\_BINNING\_PATTERN’, ‘CAP\_PROP\_XI\_BINNING\_SELECTOR’, ‘CAP\_PROP\_XI\_BINNING\_VERTICAL’, ‘CAP\_PROP\_XI\_BPC’, ‘CAP\_PROP\_XI\_BUFFERS\_QUEUE\_SIZE’, ‘CAP\_PROP\_XI\_BUFFER\_POLICY’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_00’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_01’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_02’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_03’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_10’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_11’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_12’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_13’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_20’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_21’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_22’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_23’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_30’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_31’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_32’, ‘CAP\_PROP\_XI\_CC\_MATRIX\_33’, ‘CAP\_PROP\_XI\_CHIP\_TEMP’, ‘CAP\_PROP\_XI\_CMS’, ‘CAP\_PROP\_XI\_COLOR\_FILTER\_ARRAY’, ‘CAP\_PROP\_XI\_COLUMN\_FPN\_CORRECTION’, ‘CAP\_PROP\_XI\_COOLING’, ‘CAP\_PROP\_XI\_COUNTER\_SELECTOR’, ‘CAP\_PROP\_XI\_COUNTER\_VALUE’, ‘CAP\_PROP\_XI\_DATA\_FORMAT’, ‘CAP\_PROP\_XI\_DEBOUNCE\_EN’, ‘CAP\_PROP\_XI\_DEBOUNCE\_POL’, ‘CAP\_PROP\_XI\_DEBOUNCE\_T0’, ‘CAP\_PROP\_XI\_DEBOUNCE\_T1’, ‘CAP\_PROP\_XI\_DEBUG\_LEVEL’, ‘CAP\_PROP\_XI\_DECIMATION\_HORIZONTAL’, ‘CAP\_PROP\_XI\_DECIMATION\_PATTERN’, ‘CAP\_PROP\_XI\_DECIMATION\_SELECTOR’, ‘CAP\_PROP\_XI\_DECIMATION\_VERTICAL’, ‘CAP\_PROP\_XI\_DEFAULT\_CC\_MATRIX’, ‘CAP\_PROP\_XI\_DEVICE\_MODEL\_ID’, ‘CAP\_PROP\_XI\_DEVICE\_RESET’, ‘CAP\_PROP\_XI\_DEVICE\_SN’, ‘CAP\_PROP\_XI\_DOWNSAMPLING’, ‘CAP\_PROP\_XI\_DOWNSAMPLING\_TYPE’, ‘CAP\_PROP\_XI\_EXPOSURE’, ‘CAP\_PROP\_XI\_EXPOSURE\_BURST\_COUNT’, ‘CAP\_PROP\_XI\_EXP\_PRIORITY’, ‘CAP\_PROP\_XI\_FFS\_ACCESS\_KEY’, ‘CAP\_PROP\_XI\_FFS\_FILE\_ID’, ‘CAP\_PROP\_XI\_FFS\_FILE\_SIZE’, ‘CAP\_PROP\_XI\_FRAMERATE’, ‘CAP\_PROP\_XI\_FREE\_FFS\_SIZE’, ‘CAP\_PROP\_XI\_GAIN’, ‘CAP\_PROP\_XI\_GAIN\_SELECTOR’, ‘CAP\_PROP\_XI\_GAMMAC’, ‘CAP\_PROP\_XI\_GAMMAY’, ‘CAP\_PROP\_XI\_GPI\_LEVEL’, ‘CAP\_PROP\_XI\_GPI\_MODE’, ‘CAP\_PROP\_XI\_GPI\_SELECTOR’, ‘CAP\_PROP\_XI\_GPO\_MODE’, ‘CAP\_PROP\_XI\_GPO\_SELECTOR’, ‘CAP\_PROP\_XI\_HDR’, ‘CAP\_PROP\_XI\_HDR\_KNEEPOINT\_COUNT’, ‘CAP\_PROP\_XI\_HDR\_T1’, ‘CAP\_PROP\_XI\_HDR\_T2’, ‘CAP\_PROP\_XI\_HEIGHT’, ‘CAP\_PROP\_XI\_HOUS\_BACK\_SIDE\_TEMP’, ‘CAP\_PROP\_XI\_HOUS\_TEMP’, ‘CAP\_PROP\_XI\_HW\_REVISION’, ‘CAP\_PROP\_XI\_IMAGE\_BLACK\_LEVEL’, ‘CAP\_PROP\_XI\_IMAGE\_DATA\_BIT\_DEPTH’, ‘CAP\_PROP\_XI\_IMAGE\_DATA\_FORMAT’, ‘CAP\_PROP\_XI\_IMAGE\_DATA\_FORMAT\_RGB32\_ALPHA’, ‘CAP\_PROP\_XI\_IMAGE\_IS\_COLOR’, ‘CAP\_PROP\_XI\_IMAGE\_PAYLOAD\_SIZE’, ‘CAP\_PROP\_XI\_IS\_COOLED’, ‘CAP\_PROP\_XI\_IS\_DEVICE\_EXIST’, ‘CAP\_PROP\_XI\_KNEEPOINT1’, ‘CAP\_PROP\_XI\_KNEEPOINT2’, ‘CAP\_PROP\_XI\_LED\_MODE’, ‘CAP\_PROP\_XI\_LED\_SELECTOR’, ‘CAP\_PROP\_XI\_LENS\_APERTURE\_VALUE’, ‘CAP\_PROP\_XI\_LENS\_FEATURE’, ‘CAP\_PROP\_XI\_LENS\_FEATURE\_SELECTOR’, ‘CAP\_PROP\_XI\_LENS\_FOCAL\_LENGTH’, ‘CAP\_PROP\_XI\_LENS\_FOCUS\_DISTANCE’, ‘CAP\_PROP\_XI\_LENS\_FOCUS\_MOVE’, ‘CAP\_PROP\_XI\_LENS\_FOCUS\_MOVEMENT\_VALUE’, ‘CAP\_PROP\_XI\_LENS\_MODE’, ‘CAP\_PROP\_XI\_LIMIT\_BANDWIDTH’, ‘CAP\_PROP\_XI\_LUT\_EN’, ‘CAP\_PROP\_XI\_LUT\_INDEX’, ‘CAP\_PROP\_XI\_LUT\_VALUE’, ‘CAP\_PROP\_XI\_MANUAL\_WB’, ‘CAP\_PROP\_XI\_OFFSET\_X’, ‘CAP\_PROP\_XI\_OFFSET\_Y’, ‘CAP\_PROP\_XI\_OUTPUT\_DATA\_BIT\_DEPTH’, ‘CAP\_PROP\_XI\_OUTPUT\_DATA\_PACKING’, ‘CAP\_PROP\_XI\_OUTPUT\_DATA\_PACKING\_TYPE’, ‘CAP\_PROP\_XI\_RECENT\_FRAME’, ‘CAP\_PROP\_XI\_REGION\_MODE’, ‘CAP\_PROP\_XI\_REGION\_SELECTOR’, ‘CAP\_PROP\_XI\_ROW\_FPN\_CORRECTION’, ‘CAP\_PROP\_XI\_SENSOR\_BOARD\_TEMP’, ‘CAP\_PROP\_XI\_SENSOR\_CLOCK\_FREQ\_HZ’, ‘CAP\_PROP\_XI\_SENSOR\_CLOCK\_FREQ\_INDEX’, ‘CAP\_PROP\_XI\_SENSOR\_DATA\_BIT\_DEPTH’, ‘CAP\_PROP\_XI\_SENSOR\_FEATURE\_SELECTOR’, ‘CAP\_PROP\_XI\_SENSOR\_FEATURE\_VALUE’, ‘CAP\_PROP\_XI\_SENSOR\_MODE’, ‘CAP\_PROP\_XI\_SENSOR\_OUTPUT\_CHANNEL\_COUNT’, ‘CAP\_PROP\_XI\_SENSOR\_TAPS’, ‘CAP\_PROP\_XI\_SHARPNESS’, ‘CAP\_PROP\_XI\_SHUTTER\_TYPE’, ‘CAP\_PROP\_XI\_TARGET\_TEMP’, ‘CAP\_PROP\_XI\_TEST\_PATTERN’, ‘CAP\_PROP\_XI\_TEST\_PATTERN\_GENERATOR\_SELECTOR’, ‘CAP\_PROP\_XI\_TIMEOUT’, ‘CAP\_PROP\_XI\_TRANSPORT\_PIXEL\_FORMAT’, ‘CAP\_PROP\_XI\_TRG\_DELAY’, ‘CAP\_PROP\_XI\_TRG\_SELECTOR’, ‘CAP\_PROP\_XI\_TRG\_SOFTWARE’, ‘CAP\_PROP\_XI\_TRG\_SOURCE’, ‘CAP\_PROP\_XI\_TS\_RST\_MODE’, ‘CAP\_PROP\_XI\_TS\_RST\_SOURCE’, ‘CAP\_PROP\_XI\_USED\_FFS\_SIZE’, ‘CAP\_PROP\_XI\_WB\_KB’, ‘CAP\_PROP\_XI\_WB\_KG’, ‘CAP\_PROP\_XI\_WB\_KR’, ‘CAP\_PROP\_XI\_WIDTH’, ‘CAP\_PROP\_ZOOM’, ‘CAP\_PVAPI’, ‘CAP\_PVAPI\_DECIMATION\_2OUTOF16’, ‘CAP\_PVAPI\_DECIMATION\_2OUTOF4’, ‘CAP\_PVAPI\_DECIMATION\_2OUTOF8’, ‘CAP\_PVAPI\_DECIMATION\_OFF’, ‘CAP\_PVAPI\_FSTRIGMODE\_FIXEDRATE’, ‘CAP\_PVAPI\_FSTRIGMODE\_FREERUN’, ‘CAP\_PVAPI\_FSTRIGMODE\_SOFTWARE’, ‘CAP\_PVAPI\_FSTRIGMODE\_SYNCIN1’, ‘CAP\_PVAPI\_FSTRIGMODE\_SYNCIN2’, ‘CAP\_PVAPI\_PIXELFORMAT\_BAYER16’, ‘CAP\_PVAPI\_PIXELFORMAT\_BAYER8’, ‘CAP\_PVAPI\_PIXELFORMAT\_BGR24’, ‘CAP\_PVAPI\_PIXELFORMAT\_BGRA32’, ‘CAP\_PVAPI\_PIXELFORMAT\_MONO16’, ‘CAP\_PVAPI\_PIXELFORMAT\_MONO8’, ‘CAP\_PVAPI\_PIXELFORMAT\_RGB24’, ‘CAP\_PVAPI\_PIXELFORMAT\_RGBA32’, ‘CAP\_QT’, ‘CAP\_REALSENSE’, ‘CAP\_UNICAP’, ‘CAP\_V4L’, ‘CAP\_V4L2’, ‘CAP\_VFW’, ‘CAP\_WINRT’, ‘CAP\_XIAPI’, ‘CAP\_XINE’, ‘CASCADE\_DO\_CANNY\_PRUNING’, ‘CASCADE\_DO\_ROUGH\_SEARCH’, ‘CASCADE\_FIND\_BIGGEST\_OBJECT’, ‘CASCADE\_SCALE\_IMAGE’, ‘CCL\_DEFAULT’, ‘CCL\_GRANA’, ‘CCL\_WU’, ‘CC\_STAT\_AREA’, ‘CC\_STAT\_HEIGHT’, ‘CC\_STAT\_LEFT’, ‘CC\_STAT\_MAX’, ‘CC\_STAT\_TOP’, ‘CC\_STAT\_WIDTH’, ‘CHAIN\_APPROX\_NONE’, ‘CHAIN\_APPROX\_SIMPLE’, ‘CHAIN\_APPROX\_TC89\_KCOS’, ‘CHAIN\_APPROX\_TC89\_L1’, ‘CIRCLES\_GRID\_FINDER\_PARAMETERS\_ASYMMETRIC\_GRID’, ‘CIRCLES\_GRID\_FINDER\_PARAMETERS\_SYMMETRIC\_GRID’, ‘CLAHE’, ‘CMP\_EQ’, ‘CMP\_GE’, ‘CMP\_GT’, ‘CMP\_LE’, ‘CMP\_LT’, ‘CMP\_NE’, ‘COLORMAP\_AUTUMN’, ‘COLORMAP\_BONE’, ‘COLORMAP\_CIVIDIS’, ‘COLORMAP\_COOL’, ‘COLORMAP\_HOT’, ‘COLORMAP\_HSV’, ‘COLORMAP\_INFERNO’, ‘COLORMAP\_JET’, ‘COLORMAP\_MAGMA’, ‘COLORMAP\_OCEAN’, ‘COLORMAP\_PARULA’, ‘COLORMAP\_PINK’, ‘COLORMAP\_PLASMA’, ‘COLORMAP\_RAINBOW’, ‘COLORMAP\_SPRING’, ‘COLORMAP\_SUMMER’, ‘COLORMAP\_TWILIGHT’, ‘COLORMAP\_TWILIGHT\_SHIFTED’, ‘COLORMAP\_VIRIDIS’, ‘COLORMAP\_WINTER’, ‘COLOR\_BAYER\_BG2BGR’, ‘COLOR\_BAYER\_BG2BGRA’, ‘COLOR\_BAYER\_BG2BGR\_EA’, ‘COLOR\_BAYER\_BG2BGR\_VNG’, ‘COLOR\_BAYER\_BG2GRAY’, ‘COLOR\_BAYER\_BG2RGB’, ‘COLOR\_BAYER\_BG2RGBA’, ‘COLOR\_BAYER\_BG2RGB\_EA’, ‘COLOR\_BAYER\_BG2RGB\_VNG’, ‘COLOR\_BAYER\_GB2BGR’, ‘COLOR\_BAYER\_GB2BGRA’, ‘COLOR\_BAYER\_GB2BGR\_EA’, ‘COLOR\_BAYER\_GB2BGR\_VNG’, ‘COLOR\_BAYER\_GB2GRAY’, ‘COLOR\_BAYER\_GB2RGB’, ‘COLOR\_BAYER\_GB2RGBA’, ‘COLOR\_BAYER\_GB2RGB\_EA’, ‘COLOR\_BAYER\_GB2RGB\_VNG’, ‘COLOR\_BAYER\_GR2BGR’, ‘COLOR\_BAYER\_GR2BGRA’, ‘COLOR\_BAYER\_GR2BGR\_EA’, ‘COLOR\_BAYER\_GR2BGR\_VNG’, ‘COLOR\_BAYER\_GR2GRAY’, ‘COLOR\_BAYER\_GR2RGB’, ‘COLOR\_BAYER\_GR2RGBA’, ‘COLOR\_BAYER\_GR2RGB\_EA’, ‘COLOR\_BAYER\_GR2RGB\_VNG’, ‘COLOR\_BAYER\_RG2BGR’, ‘COLOR\_BAYER\_RG2BGRA’, ‘COLOR\_BAYER\_RG2BGR\_EA’, ‘COLOR\_BAYER\_RG2BGR\_VNG’, ‘COLOR\_BAYER\_RG2GRAY’, ‘COLOR\_BAYER\_RG2RGB’, ‘COLOR\_BAYER\_RG2RGBA’, ‘COLOR\_BAYER\_RG2RGB\_EA’, ‘COLOR\_BAYER\_RG2RGB\_VNG’, ‘COLOR\_BGR2BGR555’, ‘COLOR\_BGR2BGR565’, ‘COLOR\_BGR2BGRA’, ‘COLOR\_BGR2GRAY’, ‘COLOR\_BGR2HLS’, ‘COLOR\_BGR2HLS\_FULL’, ‘COLOR\_BGR2HSV’, ‘COLOR\_BGR2HSV\_FULL’, ‘COLOR\_BGR2LAB’, ‘COLOR\_BGR2LUV’, ‘COLOR\_BGR2Lab’, ‘COLOR\_BGR2Luv’, ‘COLOR\_BGR2RGB’, ‘COLOR\_BGR2RGBA’, ‘COLOR\_BGR2XYZ’, ‘COLOR\_BGR2YCR\_CB’, ‘COLOR\_BGR2YCrCb’, ‘COLOR\_BGR2YUV’, ‘COLOR\_BGR2YUV\_I420’, ‘COLOR\_BGR2YUV\_IYUV’, ‘COLOR\_BGR2YUV\_YV12’, ‘COLOR\_BGR5552BGR’, ‘COLOR\_BGR5552BGRA’, ‘COLOR\_BGR5552GRAY’, ‘COLOR\_BGR5552RGB’, ‘COLOR\_BGR5552RGBA’, ‘COLOR\_BGR5652BGR’, ‘COLOR\_BGR5652BGRA’, ‘COLOR\_BGR5652GRAY’, ‘COLOR\_BGR5652RGB’, ‘COLOR\_BGR5652RGBA’, ‘COLOR\_BGRA2BGR’, ‘COLOR\_BGRA2BGR555’, ‘COLOR\_BGRA2BGR565’, ‘COLOR\_BGRA2GRAY’, ‘COLOR\_BGRA2RGB’, ‘COLOR\_BGRA2RGBA’, ‘COLOR\_BGRA2YUV\_I420’, ‘COLOR\_BGRA2YUV\_IYUV’, ‘COLOR\_BGRA2YUV\_YV12’, ‘COLOR\_BayerBG2BGR’, ‘COLOR\_BayerBG2BGRA’, ‘COLOR\_BayerBG2BGR\_EA’, ‘COLOR\_BayerBG2BGR\_VNG’, ‘COLOR\_BayerBG2GRAY’, ‘COLOR\_BayerBG2RGB’, ‘COLOR\_BayerBG2RGBA’, ‘COLOR\_BayerBG2RGB\_EA’, ‘COLOR\_BayerBG2RGB\_VNG’, ‘COLOR\_BayerGB2BGR’, ‘COLOR\_BayerGB2BGRA’, ‘COLOR\_BayerGB2BGR\_EA’, ‘COLOR\_BayerGB2BGR\_VNG’, ‘COLOR\_BayerGB2GRAY’, ‘COLOR\_BayerGB2RGB’, ‘COLOR\_BayerGB2RGBA’, ‘COLOR\_BayerGB2RGB\_EA’, ‘COLOR\_BayerGB2RGB\_VNG’, ‘COLOR\_BayerGR2BGR’, ‘COLOR\_BayerGR2BGRA’, ‘COLOR\_BayerGR2BGR\_EA’, ‘COLOR\_BayerGR2BGR\_VNG’, ‘COLOR\_BayerGR2GRAY’, ‘COLOR\_BayerGR2RGB’, ‘COLOR\_BayerGR2RGBA’, ‘COLOR\_BayerGR2RGB\_EA’, ‘COLOR\_BayerGR2RGB\_VNG’, ‘COLOR\_BayerRG2BGR’, ‘COLOR\_BayerRG2BGRA’, ‘COLOR\_BayerRG2BGR\_EA’, ‘COLOR\_BayerRG2BGR\_VNG’, ‘COLOR\_BayerRG2GRAY’, ‘COLOR\_BayerRG2RGB’, ‘COLOR\_BayerRG2RGBA’, ‘COLOR\_BayerRG2RGB\_EA’, ‘COLOR\_BayerRG2RGB\_VNG’, ‘COLOR\_COLORCVT\_MAX’, ‘COLOR\_GRAY2BGR’, ‘COLOR\_GRAY2BGR555’, ‘COLOR\_GRAY2BGR565’, ‘COLOR\_GRAY2BGRA’, ‘COLOR\_GRAY2RGB’, ‘COLOR\_GRAY2RGBA’, ‘COLOR\_HLS2BGR’, ‘COLOR\_HLS2BGR\_FULL’, ‘COLOR\_HLS2RGB’, ‘COLOR\_HLS2RGB\_FULL’, ‘COLOR\_HSV2BGR’, ‘COLOR\_HSV2BGR\_FULL’, ‘COLOR\_HSV2RGB’, ‘COLOR\_HSV2RGB\_FULL’, ‘COLOR\_LAB2BGR’, ‘COLOR\_LAB2LBGR’, ‘COLOR\_LAB2LRGB’, ‘COLOR\_LAB2RGB’, ‘COLOR\_LBGR2LAB’, ‘COLOR\_LBGR2LUV’, ‘COLOR\_LBGR2Lab’, ‘COLOR\_LBGR2Luv’, ‘COLOR\_LRGB2LAB’, ‘COLOR\_LRGB2LUV’, ‘COLOR\_LRGB2Lab’, ‘COLOR\_LRGB2Luv’, ‘COLOR\_LUV2BGR’, ‘COLOR\_LUV2LBGR’, ‘COLOR\_LUV2LRGB’, ‘COLOR\_LUV2RGB’, ‘COLOR\_Lab2BGR’, ‘COLOR\_Lab2LBGR’, ‘COLOR\_Lab2LRGB’, ‘COLOR\_Lab2RGB’, ‘COLOR\_Luv2BGR’, ‘COLOR\_Luv2LBGR’, ‘COLOR\_Luv2LRGB’, ‘COLOR\_Luv2RGB’, ‘COLOR\_M\_RGBA2RGBA’, ‘COLOR\_RGB2BGR’, ‘COLOR\_RGB2BGR555’, ‘COLOR\_RGB2BGR565’, ‘COLOR\_RGB2BGRA’, ‘COLOR\_RGB2GRAY’, ‘COLOR\_RGB2HLS’, ‘COLOR\_RGB2HLS\_FULL’, ‘COLOR\_RGB2HSV’, ‘COLOR\_RGB2HSV\_FULL’, ‘COLOR\_RGB2LAB’, ‘COLOR\_RGB2LUV’, ‘COLOR\_RGB2Lab’, ‘COLOR\_RGB2Luv’, ‘COLOR\_RGB2RGBA’, ‘COLOR\_RGB2XYZ’, ‘COLOR\_RGB2YCR\_CB’, ‘COLOR\_RGB2YCrCb’, ‘COLOR\_RGB2YUV’, ‘COLOR\_RGB2YUV\_I420’, ‘COLOR\_RGB2YUV\_IYUV’, ‘COLOR\_RGB2YUV\_YV12’, ‘COLOR\_RGBA2BGR’, ‘COLOR\_RGBA2BGR555’, ‘COLOR\_RGBA2BGR565’, ‘COLOR\_RGBA2BGRA’, ‘COLOR\_RGBA2GRAY’, ‘COLOR\_RGBA2M\_RGBA’, ‘COLOR\_RGBA2RGB’, ‘COLOR\_RGBA2YUV\_I420’, ‘COLOR\_RGBA2YUV\_IYUV’, ‘COLOR\_RGBA2YUV\_YV12’, ‘COLOR\_RGBA2mRGBA’, ‘COLOR\_XYZ2BGR’, ‘COLOR\_XYZ2RGB’, ‘COLOR\_YCR\_CB2BGR’, ‘COLOR\_YCR\_CB2RGB’, ‘COLOR\_YCrCb2BGR’, ‘COLOR\_YCrCb2RGB’, ‘COLOR\_YUV2BGR’, ‘COLOR\_YUV2BGRA\_I420’, ‘COLOR\_YUV2BGRA\_IYUV’, ‘COLOR\_YUV2BGRA\_NV12’, ‘COLOR\_YUV2BGRA\_NV21’, ‘COLOR\_YUV2BGRA\_UYNV’, ‘COLOR\_YUV2BGRA\_UYVY’, ‘COLOR\_YUV2BGRA\_Y422’, ‘COLOR\_YUV2BGRA\_YUNV’, ‘COLOR\_YUV2BGRA\_YUY2’, ‘COLOR\_YUV2BGRA\_YUYV’, ‘COLOR\_YUV2BGRA\_YV12’, ‘COLOR\_YUV2BGRA\_YVYU’, ‘COLOR\_YUV2BGR\_I420’, ‘COLOR\_YUV2BGR\_IYUV’, ‘COLOR\_YUV2BGR\_NV12’, ‘COLOR\_YUV2BGR\_NV21’, ‘COLOR\_YUV2BGR\_UYNV’, ‘COLOR\_YUV2BGR\_UYVY’, ‘COLOR\_YUV2BGR\_Y422’, ‘COLOR\_YUV2BGR\_YUNV’, ‘COLOR\_YUV2BGR\_YUY2’, ‘COLOR\_YUV2BGR\_YUYV’, ‘COLOR\_YUV2BGR\_YV12’, ‘COLOR\_YUV2BGR\_YVYU’, ‘COLOR\_YUV2GRAY\_420’, ‘COLOR\_YUV2GRAY\_I420’, ‘COLOR\_YUV2GRAY\_IYUV’, ‘COLOR\_YUV2GRAY\_NV12’, ‘COLOR\_YUV2GRAY\_NV21’, ‘COLOR\_YUV2GRAY\_UYNV’, ‘COLOR\_YUV2GRAY\_UYVY’, ‘COLOR\_YUV2GRAY\_Y422’, ‘COLOR\_YUV2GRAY\_YUNV’, ‘COLOR\_YUV2GRAY\_YUY2’, ‘COLOR\_YUV2GRAY\_YUYV’, ‘COLOR\_YUV2GRAY\_YV12’, ‘COLOR\_YUV2GRAY\_YVYU’, ‘COLOR\_YUV2RGB’, ‘COLOR\_YUV2RGBA\_I420’, ‘COLOR\_YUV2RGBA\_IYUV’, ‘COLOR\_YUV2RGBA\_NV12’, ‘COLOR\_YUV2RGBA\_NV21’, ‘COLOR\_YUV2RGBA\_UYNV’, ‘COLOR\_YUV2RGBA\_UYVY’, ‘COLOR\_YUV2RGBA\_Y422’, ‘COLOR\_YUV2RGBA\_YUNV’, ‘COLOR\_YUV2RGBA\_YUY2’, ‘COLOR\_YUV2RGBA\_YUYV’, ‘COLOR\_YUV2RGBA\_YV12’, ‘COLOR\_YUV2RGBA\_YVYU’, ‘COLOR\_YUV2RGB\_I420’, ‘COLOR\_YUV2RGB\_IYUV’, ‘COLOR\_YUV2RGB\_NV12’, ‘COLOR\_YUV2RGB\_NV21’, ‘COLOR\_YUV2RGB\_UYNV’, ‘COLOR\_YUV2RGB\_UYVY’, ‘COLOR\_YUV2RGB\_Y422’, ‘COLOR\_YUV2RGB\_YUNV’, ‘COLOR\_YUV2RGB\_YUY2’, ‘COLOR\_YUV2RGB\_YUYV’, ‘COLOR\_YUV2RGB\_YV12’, ‘COLOR\_YUV2RGB\_YVYU’, ‘COLOR\_YUV420P2BGR’, ‘COLOR\_YUV420P2BGRA’, ‘COLOR\_YUV420P2GRAY’, ‘COLOR\_YUV420P2RGB’, ‘COLOR\_YUV420P2RGBA’, ‘COLOR\_YUV420SP2BGR’, ‘COLOR\_YUV420SP2BGRA’, ‘COLOR\_YUV420SP2GRAY’, ‘COLOR\_YUV420SP2RGB’, ‘COLOR\_YUV420SP2RGBA’, ‘COLOR\_YUV420p2BGR’, ‘COLOR\_YUV420p2BGRA’, ‘COLOR\_YUV420p2GRAY’, ‘COLOR\_YUV420p2RGB’, ‘COLOR\_YUV420p2RGBA’, ‘COLOR\_YUV420sp2BGR’, ‘COLOR\_YUV420sp2BGRA’, ‘COLOR\_YUV420sp2GRAY’, ‘COLOR\_YUV420sp2RGB’, ‘COLOR\_YUV420sp2RGBA’, ‘COLOR\_mRGBA2RGBA’, ‘CONTOURS\_MATCH\_I1’, ‘CONTOURS\_MATCH\_I2’, ‘CONTOURS\_MATCH\_I3’, ‘COVAR\_COLS’, ‘COVAR\_NORMAL’, ‘COVAR\_ROWS’, ‘COVAR\_SCALE’, ‘COVAR\_SCRAMBLED’, ‘COVAR\_USE\_AVG’, ‘CV\_16S’, ‘CV\_16SC1’, ‘CV\_16SC2’, ‘CV\_16SC3’, ‘CV\_16SC4’, ‘CV\_16U’, ‘CV\_16UC1’, ‘CV\_16UC2’, ‘CV\_16UC3’, ‘CV\_16UC4’, ‘CV\_32F’, ‘CV\_32FC1’, ‘CV\_32FC2’, ‘CV\_32FC3’, ‘CV\_32FC4’, ‘CV\_32S’, ‘CV\_32SC1’, ‘CV\_32SC2’, ‘CV\_32SC3’, ‘CV\_32SC4’, ‘CV\_64F’, ‘CV\_64FC1’, ‘CV\_64FC2’, ‘CV\_64FC3’, ‘CV\_64FC4’, ‘CV\_8S’, ‘CV\_8SC1’, ‘CV\_8SC2’, ‘CV\_8SC3’, ‘CV\_8SC4’, ‘CV\_8U’, ‘CV\_8UC1’, ‘CV\_8UC2’, ‘CV\_8UC3’, ‘CV\_8UC4’, ‘CV\_FEATURE\_PARAMS\_HAAR’, ‘CV\_FEATURE\_PARAMS\_HOG’, ‘CV\_FEATURE\_PARAMS\_LBP’, ‘CalibrateCRF’, ‘CalibrateDebevec’, ‘CalibrateRobertson’, ‘CamShift’, ‘Canny’, ‘CascadeClassifier’, ‘CascadeClassifier\_convert’, ‘ChiHistogramCostExtractor’, ‘CirclesGridFinderParameters’, ‘CirclesGridFinderParameters\_ASYMMETRIC\_GRID’, ‘CirclesGridFinderParameters\_SYMMETRIC\_GRID’, ‘CvFeatureParams\_HAAR’, ‘CvFeatureParams\_HOG’, ‘CvFeatureParams\_LBP’, ‘DCT\_INVERSE’, ‘DCT\_ROWS’, ‘DECOMP\_CHOLESKY’, ‘DECOMP\_EIG’, ‘DECOMP\_LU’, ‘DECOMP\_NORMAL’, ‘DECOMP\_QR’, ‘DECOMP\_SVD’, ‘DESCRIPTOR\_MATCHER\_BRUTEFORCE’, ‘DESCRIPTOR\_MATCHER\_BRUTEFORCE\_HAMMING’, ‘DESCRIPTOR\_MATCHER\_BRUTEFORCE\_HAMMINGLUT’, ‘DESCRIPTOR\_MATCHER\_BRUTEFORCE\_L1’, ‘DESCRIPTOR\_MATCHER\_BRUTEFORCE\_SL2’, ‘DESCRIPTOR\_MATCHER\_FLANNBASED’, ‘DFT\_COMPLEX\_INPUT’, ‘DFT\_COMPLEX\_OUTPUT’, ‘DFT\_INVERSE’, ‘DFT\_REAL\_OUTPUT’, ‘DFT\_ROWS’, ‘DFT\_SCALE’, ‘DISOPTICAL\_FLOW\_PRESET\_FAST’, ‘DISOPTICAL\_FLOW\_PRESET\_MEDIUM’, ‘DISOPTICAL\_FLOW\_PRESET\_ULTRAFAST’, ‘DISOpticalFlow’, ‘DISOpticalFlow\_PRESET\_FAST’, ‘DISOpticalFlow\_PRESET\_MEDIUM’, ‘DISOpticalFlow\_PRESET\_ULTRAFAST’, ‘DISOpticalFlow\_create’, ‘DIST\_C’, ‘DIST\_FAIR’, ‘DIST\_HUBER’, ‘DIST\_L1’, ‘DIST\_L12’, ‘DIST\_L2’, ‘DIST\_LABEL\_CCOMP’, ‘DIST\_LABEL\_PIXEL’, ‘DIST\_MASK\_3’, ‘DIST\_MASK\_5’, ‘DIST\_MASK\_PRECISE’, ‘DIST\_USER’, ‘DIST\_WELSCH’, ‘DMatch’, ‘DRAW\_MATCHES\_FLAGS\_DEFAULT’, ‘DRAW\_MATCHES\_FLAGS\_DRAW\_OVER\_OUTIMG’, ‘DRAW\_MATCHES\_FLAGS\_DRAW\_RICH\_KEYPOINTS’, ‘DRAW\_MATCHES\_FLAGS\_NOT\_DRAW\_SINGLE\_POINTS’, ‘DenseOpticalFlow’, ‘DescriptorMatcher’, ‘DescriptorMatcher\_BRUTEFORCE’, ‘DescriptorMatcher\_BRUTEFORCE\_HAMMING’, ‘DescriptorMatcher\_BRUTEFORCE\_HAMMINGLUT’, ‘DescriptorMatcher\_BRUTEFORCE\_L1’, ‘DescriptorMatcher\_BRUTEFORCE\_SL2’, ‘DescriptorMatcher\_FLANNBASED’, ‘DescriptorMatcher\_create’, ‘DrawMatchesFlags\_DEFAULT’, ‘DrawMatchesFlags\_DRAW\_OVER\_OUTIMG’, ‘DrawMatchesFlags\_DRAW\_RICH\_KEYPOINTS’, ‘DrawMatchesFlags\_NOT\_DRAW\_SINGLE\_POINTS’, ‘EMD’, ‘EMDHistogramCostExtractor’, ‘EMDL1HistogramCostExtractor’, ‘EVENT\_FLAG\_ALTKEY’, ‘EVENT\_FLAG\_CTRLKEY’, ‘EVENT\_FLAG\_LBUTTON’, ‘EVENT\_FLAG\_MBUTTON’, ‘EVENT\_FLAG\_RBUTTON’, ‘EVENT\_FLAG\_SHIFTKEY’, ‘EVENT\_LBUTTONDBLCLK’, ‘EVENT\_LBUTTONDOWN’, ‘EVENT\_LBUTTONUP’, ‘EVENT\_MBUTTONDBLCLK’, ‘EVENT\_MBUTTONDOWN’, ‘EVENT\_MBUTTONUP’, ‘EVENT\_MOUSEHWHEEL’, ‘EVENT\_MOUSEMOVE’, ‘EVENT\_MOUSEWHEEL’, ‘EVENT\_RBUTTONDBLCLK’, ‘EVENT\_RBUTTONDOWN’, ‘EVENT\_RBUTTONUP’, ‘Error’, ‘FAST\_FEATURE\_DETECTOR\_FAST\_N’, ‘FAST\_FEATURE\_DETECTOR\_NONMAX\_SUPPRESSION’, ‘FAST\_FEATURE\_DETECTOR\_THRESHOLD’, ‘FAST\_FEATURE\_DETECTOR\_TYPE\_5\_8’, ‘FAST\_FEATURE\_DETECTOR\_TYPE\_7\_12’, ‘FAST\_FEATURE\_DETECTOR\_TYPE\_9\_16’, ‘FILE\_NODE\_EMPTY’, ‘FILE\_NODE\_FLOAT’, ‘FILE\_NODE\_FLOW’, ‘FILE\_NODE\_INT’, ‘FILE\_NODE\_MAP’, ‘FILE\_NODE\_NAMED’, ‘FILE\_NODE\_NONE’, ‘FILE\_NODE\_REAL’, ‘FILE\_NODE\_SEQ’, ‘FILE\_NODE\_STR’, ‘FILE\_NODE\_STRING’, ‘FILE\_NODE\_TYPE\_MASK’, ‘FILE\_NODE\_UNIFORM’, ‘FILE\_STORAGE\_APPEND’, ‘FILE\_STORAGE\_BASE64’, ‘FILE\_STORAGE\_FORMAT\_AUTO’, ‘FILE\_STORAGE\_FORMAT\_JSON’, ‘FILE\_STORAGE\_FORMAT\_MASK’, ‘FILE\_STORAGE\_FORMAT\_XML’, ‘FILE\_STORAGE\_FORMAT\_YAML’, ‘FILE\_STORAGE\_INSIDE\_MAP’, ‘FILE\_STORAGE\_MEMORY’, ‘FILE\_STORAGE\_NAME\_EXPECTED’, ‘FILE\_STORAGE\_READ’, ‘FILE\_STORAGE\_UNDEFINED’, ‘FILE\_STORAGE\_VALUE\_EXPECTED’, ‘FILE\_STORAGE\_WRITE’, ‘FILE\_STORAGE\_WRITE\_BASE64’, ‘FILLED’, ‘FILTER\_SCHARR’, ‘FLOODFILL\_FIXED\_RANGE’, ‘FLOODFILL\_MASK\_ONLY’, ‘FM\_7POINT’, ‘FM\_8POINT’, ‘FM\_LMEDS’, ‘FM\_RANSAC’, ‘FONT\_HERSHEY\_COMPLEX’, ‘FONT\_HERSHEY\_COMPLEX\_SMALL’, ‘FONT\_HERSHEY\_DUPLEX’, ‘FONT\_HERSHEY\_PLAIN’, ‘FONT\_HERSHEY\_SCRIPT\_COMPLEX’, ‘FONT\_HERSHEY\_SCRIPT\_SIMPLEX’, ‘FONT\_HERSHEY\_SIMPLEX’, ‘FONT\_HERSHEY\_TRIPLEX’, ‘FONT\_ITALIC’, ‘FORMATTER\_FMT\_C’, ‘FORMATTER\_FMT\_CSV’, ‘FORMATTER\_FMT\_DEFAULT’, ‘FORMATTER\_FMT\_MATLAB’, ‘FORMATTER\_FMT\_NUMPY’, ‘FORMATTER\_FMT\_PYTHON’, ‘FarnebackOpticalFlow’, ‘FarnebackOpticalFlow\_create’, ‘FastFeatureDetector’, ‘FastFeatureDetector\_FAST\_N’, ‘FastFeatureDetector\_NONMAX\_SUPPRESSION’, ‘FastFeatureDetector\_THRESHOLD’, ‘FastFeatureDetector\_TYPE\_5\_8’, ‘FastFeatureDetector\_TYPE\_7\_12’, ‘FastFeatureDetector\_TYPE\_9\_16’, ‘FastFeatureDetector\_create’, ‘Feature2D’, ‘FileNode’, ‘FileNode\_EMPTY’, ‘FileNode\_FLOAT’, ‘FileNode\_FLOW’, ‘FileNode\_INT’, ‘FileNode\_MAP’, ‘FileNode\_NAMED’, ‘FileNode\_NONE’, ‘FileNode\_REAL’, ‘FileNode\_SEQ’, ‘FileNode\_STR’, ‘FileNode\_STRING’, ‘FileNode\_TYPE\_MASK’, ‘FileNode\_UNIFORM’, ‘FileStorage’, ‘FileStorage\_APPEND’, ‘FileStorage\_BASE64’, ‘FileStorage\_FORMAT\_AUTO’, ‘FileStorage\_FORMAT\_JSON’, ‘FileStorage\_FORMAT\_MASK’, ‘FileStorage\_FORMAT\_XML’, ‘FileStorage\_FORMAT\_YAML’, ‘FileStorage\_INSIDE\_MAP’, ‘FileStorage\_MEMORY’, ‘FileStorage\_NAME\_EXPECTED’, ‘FileStorage\_READ’, ‘FileStorage\_UNDEFINED’, ‘FileStorage\_VALUE\_EXPECTED’, ‘FileStorage\_WRITE’, ‘FileStorage\_WRITE\_BASE64’, ‘FlannBasedMatcher’, ‘FlannBasedMatcher\_create’, ‘Formatter\_FMT\_C’, ‘Formatter\_FMT\_CSV’, ‘Formatter\_FMT\_DEFAULT’, ‘Formatter\_FMT\_MATLAB’, ‘Formatter\_FMT\_NUMPY’, ‘Formatter\_FMT\_PYTHON’, ‘GC\_BGD’, ‘GC\_EVAL’, ‘GC\_EVAL\_FREEZE\_MODEL’, ‘GC\_FGD’, ‘GC\_INIT\_WITH\_MASK’, ‘GC\_INIT\_WITH\_RECT’, ‘GC\_PR\_BGD’, ‘GC\_PR\_FGD’, ‘GEMM\_1\_T’, ‘GEMM\_2\_T’, ‘GEMM\_3\_T’, ‘GFTTDetector’, ‘GFTTDetector\_create’, ‘GaussianBlur’, ‘GeneralizedHough’, ‘GeneralizedHoughBallard’, ‘GeneralizedHoughGuil’, ‘HISTCMP\_BHATTACHARYYA’, ‘HISTCMP\_CHISQR’, ‘HISTCMP\_CHISQR\_ALT’, ‘HISTCMP\_CORREL’, ‘HISTCMP\_HELLINGER’, ‘HISTCMP\_INTERSECT’, ‘HISTCMP\_KL\_DIV’, ‘HOGDESCRIPTOR\_DEFAULT\_NLEVELS’, ‘HOGDESCRIPTOR\_DESCR\_FORMAT\_COL\_BY\_COL’, ‘HOGDESCRIPTOR\_DESCR\_FORMAT\_ROW\_BY\_ROW’, ‘HOGDESCRIPTOR\_L2HYS’, ‘HOGDescriptor’, ‘HOGDescriptor\_DEFAULT\_NLEVELS’, ‘HOGDescriptor\_DESCR\_FORMAT\_COL\_BY\_COL’, ‘HOGDescriptor\_DESCR\_FORMAT\_ROW\_BY\_ROW’, ‘HOGDescriptor\_L2Hys’, ‘HOGDescriptor\_getDaimlerPeopleDetector’, ‘HOGDescriptor\_getDefaultPeopleDetector’, ‘HOUGH\_GRADIENT’, ‘HOUGH\_MULTI\_SCALE’, ‘HOUGH\_PROBABILISTIC’, ‘HOUGH\_STANDARD’, ‘HausdorffDistanceExtractor’, ‘HistogramCostExtractor’, ‘HoughCircles’, ‘HoughLines’, ‘HoughLinesP’, ‘HoughLinesPointSet’, ‘HuMoments’, ‘IMREAD\_ANYCOLOR’, ‘IMREAD\_ANYDEPTH’, ‘IMREAD\_COLOR’, ‘IMREAD\_GRAYSCALE’, ‘IMREAD\_IGNORE\_ORIENTATION’, ‘IMREAD\_LOAD\_GDAL’, ‘IMREAD\_REDUCED\_COLOR\_2’, ‘IMREAD\_REDUCED\_COLOR\_4’, ‘IMREAD\_REDUCED\_COLOR\_8’, ‘IMREAD\_REDUCED\_GRAYSCALE\_2’, ‘IMREAD\_REDUCED\_GRAYSCALE\_4’, ‘IMREAD\_REDUCED\_GRAYSCALE\_8’, ‘IMREAD\_UNCHANGED’, ‘IMWRITE\_EXR\_TYPE’, ‘IMWRITE\_EXR\_TYPE\_FLOAT’, ‘IMWRITE\_EXR\_TYPE\_HALF’, ‘IMWRITE\_JPEG2000\_COMPRESSION\_X1000’, ‘IMWRITE\_JPEG\_CHROMA\_QUALITY’, ‘IMWRITE\_JPEG\_LUMA\_QUALITY’, ‘IMWRITE\_JPEG\_OPTIMIZE’, ‘IMWRITE\_JPEG\_PROGRESSIVE’, ‘IMWRITE\_JPEG\_QUALITY’, ‘IMWRITE\_JPEG\_RST\_INTERVAL’, ‘IMWRITE\_PAM\_FORMAT\_BLACKANDWHITE’, ‘IMWRITE\_PAM\_FORMAT\_GRAYSCALE’, ‘IMWRITE\_PAM\_FORMAT\_GRAYSCALE\_ALPHA’, ‘IMWRITE\_PAM\_FORMAT\_NULL’, ‘IMWRITE\_PAM\_FORMAT\_RGB’, ‘IMWRITE\_PAM\_FORMAT\_RGB\_ALPHA’, ‘IMWRITE\_PAM\_TUPLETYPE’, ‘IMWRITE\_PNG\_BILEVEL’, ‘IMWRITE\_PNG\_COMPRESSION’, ‘IMWRITE\_PNG\_STRATEGY’, ‘IMWRITE\_PNG\_STRATEGY\_DEFAULT’, ‘IMWRITE\_PNG\_STRATEGY\_FILTERED’, ‘IMWRITE\_PNG\_STRATEGY\_FIXED’, ‘IMWRITE\_PNG\_STRATEGY\_HUFFMAN\_ONLY’, ‘IMWRITE\_PNG\_STRATEGY\_RLE’, ‘IMWRITE\_PXM\_BINARY’, ‘IMWRITE\_TIFF\_COMPRESSION’, ‘IMWRITE\_TIFF\_RESUNIT’, ‘IMWRITE\_TIFF\_XDPI’, ‘IMWRITE\_TIFF\_YDPI’, ‘IMWRITE\_WEBP\_QUALITY’, ‘INPAINT\_NS’, ‘INPAINT\_TELEA’, ‘INTERSECT\_FULL’, ‘INTERSECT\_NONE’, ‘INTERSECT\_PARTIAL’, ‘INTER\_AREA’, ‘INTER\_BITS’, ‘INTER\_BITS2’, ‘INTER\_CUBIC’, ‘INTER\_LANCZOS4’, ‘INTER\_LINEAR’, ‘INTER\_LINEAR\_EXACT’, ‘INTER\_MAX’, ‘INTER\_NEAREST’, ‘INTER\_TAB\_SIZE’, ‘INTER\_TAB\_SIZE2’, ‘KAZE’, ‘KAZE\_DIFF\_CHARBONNIER’, ‘KAZE\_DIFF\_PM\_G1’, ‘KAZE\_DIFF\_PM\_G2’, ‘KAZE\_DIFF\_WEICKERT’, ‘KAZE\_create’, ‘KMEANS\_PP\_CENTERS’, ‘KMEANS\_RANDOM\_CENTERS’, ‘KMEANS\_USE\_INITIAL\_LABELS’, ‘KalmanFilter’, ‘KeyPoint’, ‘KeyPoint\_convert’, ‘KeyPoint\_overlap’, ‘LDR\_SIZE’, ‘LINE\_4’, ‘LINE\_8’, ‘LINE\_AA’, ‘LMEDS’, ‘LSD\_REFINE\_ADV’, ‘LSD\_REFINE\_NONE’, ‘LSD\_REFINE\_STD’, ‘LUT’, ‘Laplacian’, ‘LineSegmentDetector’, ‘MARKER\_CROSS’, ‘MARKER\_DIAMOND’, ‘MARKER\_SQUARE’, ‘MARKER\_STAR’, ‘MARKER\_TILTED\_CROSS’, ‘MARKER\_TRIANGLE\_DOWN’, ‘MARKER\_TRIANGLE\_UP’, ‘MAT\_AUTO\_STEP’, ‘MAT\_CONTINUOUS\_FLAG’, ‘MAT\_DEPTH\_MASK’, ‘MAT\_MAGIC\_MASK’, ‘MAT\_MAGIC\_VAL’, ‘MAT\_SUBMATRIX\_FLAG’, ‘MAT\_TYPE\_MASK’, ‘MIXED\_CLONE’, ‘MONOCHROME\_TRANSFER’, ‘MORPH\_BLACKHAT’, ‘MORPH\_CLOSE’, ‘MORPH\_CROSS’, ‘MORPH\_DILATE’, ‘MORPH\_ELLIPSE’, ‘MORPH\_ERODE’, ‘MORPH\_GRADIENT’, ‘MORPH\_HITMISS’, ‘MORPH\_OPEN’, ‘MORPH\_RECT’, ‘MORPH\_TOPHAT’, ‘MOTION\_AFFINE’, ‘MOTION\_EUCLIDEAN’, ‘MOTION\_HOMOGRAPHY’, ‘MOTION\_TRANSLATION’, ‘MSER’, ‘MSER\_create’, ‘Mahalanobis’, ‘Mat\_AUTO\_STEP’, ‘Mat\_CONTINUOUS\_FLAG’, ‘Mat\_DEPTH\_MASK’, ‘Mat\_MAGIC\_MASK’, ‘Mat\_MAGIC\_VAL’, ‘Mat\_SUBMATRIX\_FLAG’, ‘Mat\_TYPE\_MASK’, ‘MergeDebevec’, ‘MergeExposures’, ‘MergeMertens’, ‘MergeRobertson’, ‘MultiTracker’, ‘MultiTracker\_create’, ‘NORMAL\_CLONE’, ‘NORMCONV\_FILTER’, ‘NORM\_HAMMING’, ‘NORM\_HAMMING2’, ‘NORM\_INF’, ‘NORM\_L1’, ‘NORM\_L2’, ‘NORM\_L2SQR’, ‘NORM\_MINMAX’, ‘NORM\_RELATIVE’, ‘NORM\_TYPE\_MASK’, ‘NormHistogramCostExtractor’, ‘OPTFLOW\_FARNEBACK\_GAUSSIAN’, ‘OPTFLOW\_LK\_GET\_MIN\_EIGENVALS’, ‘OPTFLOW\_USE\_INITIAL\_FLOW’, ‘ORB’, ‘ORB\_FAST\_SCORE’, ‘ORB\_HARRIS\_SCORE’, ‘ORB\_create’, ‘PARAM\_ALGORITHM’, ‘PARAM\_BOOLEAN’, ‘PARAM\_FLOAT’, ‘PARAM\_INT’, ‘PARAM\_MAT’, ‘PARAM\_MAT\_VECTOR’, ‘PARAM\_REAL’, ‘PARAM\_SCALAR’, ‘PARAM\_STRING’, ‘PARAM\_UCHAR’, ‘PARAM\_UINT64’, ‘PARAM\_UNSIGNED\_INT’, ‘PCABackProject’, ‘PCACompute’, ‘PCACompute2’, ‘PCAProject’, ‘PCA\_DATA\_AS\_COL’, ‘PCA\_DATA\_AS\_ROW’, ‘PCA\_USE\_AVG’, ‘PROJ\_SPHERICAL\_EQRECT’, ‘PROJ\_SPHERICAL\_ORTHO’, ‘PSNR’, ‘Param\_ALGORITHM’, ‘Param\_BOOLEAN’, ‘Param\_FLOAT’, ‘Param\_INT’, ‘Param\_MAT’, ‘Param\_MAT\_VECTOR’, ‘Param\_REAL’, ‘Param\_SCALAR’, ‘Param\_STRING’, ‘Param\_UCHAR’, ‘Param\_UINT64’, ‘Param\_UNSIGNED\_INT’, ‘PyRotationWarper’, ‘QRCodeDetector’, ‘QT\_CHECKBOX’, ‘QT\_FONT\_BLACK’, ‘QT\_FONT\_BOLD’, ‘QT\_FONT\_DEMIBOLD’, ‘QT\_FONT\_LIGHT’, ‘QT\_FONT\_NORMAL’, ‘QT\_NEW\_BUTTONBAR’, ‘QT\_PUSH\_BUTTON’, ‘QT\_RADIOBOX’, ‘QT\_STYLE\_ITALIC’, ‘QT\_STYLE\_NORMAL’, ‘QT\_STYLE\_OBLIQUE’, ‘RANSAC’, ‘RECURS\_FILTER’, ‘REDUCE\_AVG’, ‘REDUCE\_MAX’, ‘REDUCE\_MIN’, ‘REDUCE\_SUM’, ‘RETR\_CCOMP’, ‘RETR\_EXTERNAL’, ‘RETR\_FLOODFILL’, ‘RETR\_LIST’, ‘RETR\_TREE’, ‘RHO’, ‘RNG\_NORMAL’, ‘RNG\_UNIFORM’, ‘ROTATE\_180’, ‘ROTATE\_90\_CLOCKWISE’, ‘ROTATE\_90\_COUNTERCLOCKWISE’, ‘RQDecomp3x3’, ‘Rodrigues’, ‘SOLVELP\_MULTI’, ‘SOLVELP\_SINGLE’, ‘SOLVELP\_UNBOUNDED’, ‘SOLVELP\_UNFEASIBLE’, ‘SOLVEPNP\_AP3P’, ‘SOLVEPNP\_DLS’, ‘SOLVEPNP\_EPNP’, ‘SOLVEPNP\_IPPE’, ‘SOLVEPNP\_IPPE\_SQUARE’, ‘SOLVEPNP\_ITERATIVE’, ‘SOLVEPNP\_MAX\_COUNT’, ‘SOLVEPNP\_P3P’, ‘SOLVEPNP\_UPNP’, ‘SORT\_ASCENDING’, ‘SORT\_DESCENDING’, ‘SORT\_EVERY\_COLUMN’, ‘SORT\_EVERY\_ROW’, ‘SPARSE\_MAT\_HASH\_BIT’, ‘SPARSE\_MAT\_HASH\_SCALE’, ‘SPARSE\_MAT\_MAGIC\_VAL’, ‘SPARSE\_MAT\_MAX\_DIM’, ‘STEREO\_BM\_PREFILTER\_NORMALIZED\_RESPONSE’, ‘STEREO\_BM\_PREFILTER\_XSOBEL’, ‘STEREO\_MATCHER\_DISP\_SCALE’, ‘STEREO\_MATCHER\_DISP\_SHIFT’, ‘STEREO\_SGBM\_MODE\_HH’, ‘STEREO\_SGBM\_MODE\_HH4’, ‘STEREO\_SGBM\_MODE\_SGBM’, ‘STEREO\_SGBM\_MODE\_SGBM\_3WAY’, ‘STITCHER\_ERR\_CAMERA\_PARAMS\_ADJUST\_FAIL’, ‘STITCHER\_ERR\_HOMOGRAPHY\_EST\_FAIL’, ‘STITCHER\_ERR\_NEED\_MORE\_IMGS’, ‘STITCHER\_OK’, ‘STITCHER\_PANORAMA’, ‘STITCHER\_SCANS’, ‘SUBDIV2D\_NEXT\_AROUND\_DST’, ‘SUBDIV2D\_NEXT\_AROUND\_LEFT’, ‘SUBDIV2D\_NEXT\_AROUND\_ORG’, ‘SUBDIV2D\_NEXT\_AROUND\_RIGHT’, ‘SUBDIV2D\_PREV\_AROUND\_DST’, ‘SUBDIV2D\_PREV\_AROUND\_LEFT’, ‘SUBDIV2D\_PREV\_AROUND\_ORG’, ‘SUBDIV2D\_PREV\_AROUND\_RIGHT’, ‘SUBDIV2D\_PTLOC\_ERROR’, ‘SUBDIV2D\_PTLOC\_INSIDE’, ‘SUBDIV2D\_PTLOC\_ON\_EDGE’, ‘SUBDIV2D\_PTLOC\_OUTSIDE\_RECT’, ‘SUBDIV2D\_PTLOC\_VERTEX’, ‘SVBackSubst’, ‘SVD\_FULL\_UV’, ‘SVD\_MODIFY\_A’, ‘SVD\_NO\_UV’, ‘SVDecomp’, ‘Scharr’, ‘ShapeContextDistanceExtractor’, ‘ShapeDistanceExtractor’, ‘ShapeTransformer’, ‘SimpleBlobDetector’, ‘SimpleBlobDetector\_Params’, ‘SimpleBlobDetector\_create’, ‘Sobel’, ‘SparseMat\_HASH\_BIT’, ‘SparseMat\_HASH\_SCALE’, ‘SparseMat\_MAGIC\_VAL’, ‘SparseMat\_MAX\_DIM’, ‘SparseOpticalFlow’, ‘SparsePyrLKOpticalFlow’, ‘SparsePyrLKOpticalFlow\_create’, ‘StereoBM’, ‘StereoBM\_PREFILTER\_NORMALIZED\_RESPONSE’, ‘StereoBM\_PREFILTER\_XSOBEL’, ‘StereoBM\_create’, ‘StereoMatcher’, ‘StereoMatcher\_DISP\_SCALE’, ‘StereoMatcher\_DISP\_SHIFT’, ‘StereoSGBM’, ‘StereoSGBM\_MODE\_HH’, ‘StereoSGBM\_MODE\_HH4’, ‘StereoSGBM\_MODE\_SGBM’, ‘StereoSGBM\_MODE\_SGBM\_3WAY’, ‘StereoSGBM\_create’, ‘Stitcher’, ‘Stitcher\_ERR\_CAMERA\_PARAMS\_ADJUST\_FAIL’, ‘Stitcher\_ERR\_HOMOGRAPHY\_EST\_FAIL’, ‘Stitcher\_ERR\_NEED\_MORE\_IMGS’, ‘Stitcher\_OK’, ‘Stitcher\_PANORAMA’, ‘Stitcher\_SCANS’, ‘Stitcher\_create’, ‘Subdiv2D’, ‘Subdiv2D\_NEXT\_AROUND\_DST’, ‘Subdiv2D\_NEXT\_AROUND\_LEFT’, ‘Subdiv2D\_NEXT\_AROUND\_ORG’, ‘Subdiv2D\_NEXT\_AROUND\_RIGHT’, ‘Subdiv2D\_PREV\_AROUND\_DST’, ‘Subdiv2D\_PREV\_AROUND\_LEFT’, ‘Subdiv2D\_PREV\_AROUND\_ORG’, ‘Subdiv2D\_PREV\_AROUND\_RIGHT’, ‘Subdiv2D\_PTLOC\_ERROR’, ‘Subdiv2D\_PTLOC\_INSIDE’, ‘Subdiv2D\_PTLOC\_ON\_EDGE’, ‘Subdiv2D\_PTLOC\_OUTSIDE\_RECT’, ‘Subdiv2D\_PTLOC\_VERTEX’, ‘TERM\_CRITERIA\_COUNT’, ‘TERM\_CRITERIA\_EPS’, ‘TERM\_CRITERIA\_MAX\_ITER’, ‘THRESH\_BINARY’, ‘THRESH\_BINARY\_INV’, ‘THRESH\_MASK’, ‘THRESH\_OTSU’, ‘THRESH\_TOZERO’, ‘THRESH\_TOZERO\_INV’, ‘THRESH\_TRIANGLE’, ‘THRESH\_TRUNC’, ‘TM\_CCOEFF’, ‘TM\_CCOEFF\_NORMED’, ‘TM\_CCORR’, ‘TM\_CCORR\_NORMED’, ‘TM\_SQDIFF’, ‘TM\_SQDIFF\_NORMED’, ‘TRACKER\_KCF\_CN’, ‘TRACKER\_KCF\_CUSTOM’, ‘TRACKER\_KCF\_GRAY’, ‘TRACKER\_SAMPLER\_CSC\_MODE\_DETECT’, ‘TRACKER\_SAMPLER\_CSC\_MODE\_INIT\_NEG’, ‘TRACKER\_SAMPLER\_CSC\_MODE\_INIT\_POS’, ‘TRACKER\_SAMPLER\_CSC\_MODE\_TRACK\_NEG’, ‘TRACKER\_SAMPLER\_CSC\_MODE\_TRACK\_POS’, ‘TRACKER\_SAMPLER\_CS\_MODE\_CLASSIFY’, ‘TRACKER\_SAMPLER\_CS\_MODE\_NEGATIVE’, ‘TRACKER\_SAMPLER\_CS\_MODE\_POSITIVE’, ‘TermCriteria\_COUNT’, ‘TermCriteria\_EPS’, ‘TermCriteria\_MAX\_ITER’, ‘ThinPlateSplineShapeTransformer’, ‘TickMeter’, ‘Tonemap’, ‘TonemapDrago’, ‘TonemapMantiuk’, ‘TonemapReinhard’, ‘Tracker’, ‘TrackerBoosting’, ‘TrackerBoosting\_create’, ‘TrackerCSRT’, ‘TrackerCSRT\_create’, ‘TrackerGOTURN’, ‘TrackerGOTURN\_create’, ‘TrackerKCF’, ‘TrackerKCF\_CN’, ‘TrackerKCF\_CUSTOM’, ‘TrackerKCF\_GRAY’, ‘TrackerKCF\_create’, ‘TrackerMIL’, ‘TrackerMIL\_create’, ‘TrackerMOSSE’, ‘TrackerMOSSE\_create’, ‘TrackerMedianFlow’, ‘TrackerMedianFlow\_create’, ‘TrackerSamplerCSC\_MODE\_DETECT’, ‘TrackerSamplerCSC\_MODE\_INIT\_NEG’, ‘TrackerSamplerCSC\_MODE\_INIT\_POS’, ‘TrackerSamplerCSC\_MODE\_TRACK\_NEG’, ‘TrackerSamplerCSC\_MODE\_TRACK\_POS’, ‘TrackerSamplerCS\_MODE\_CLASSIFY’, ‘TrackerSamplerCS\_MODE\_NEGATIVE’, ‘TrackerSamplerCS\_MODE\_POSITIVE’, ‘TrackerTLD’, ‘TrackerTLD\_create’, ‘UMAT\_AUTO\_STEP’, ‘UMAT\_CONTINUOUS\_FLAG’, ‘UMAT\_DATA\_ASYNC\_CLEANUP’, ‘UMAT\_DATA\_COPY\_ON\_MAP’, ‘UMAT\_DATA\_DEVICE\_COPY\_OBSOLETE’, ‘UMAT\_DATA\_DEVICE\_MEM\_MAPPED’, ‘UMAT\_DATA\_HOST\_COPY\_OBSOLETE’, ‘UMAT\_DATA\_TEMP\_COPIED\_UMAT’, ‘UMAT\_DATA\_TEMP\_UMAT’, ‘UMAT\_DATA\_USER\_ALLOCATED’, ‘UMAT\_DEPTH\_MASK’, ‘UMAT\_MAGIC\_MASK’, ‘UMAT\_MAGIC\_VAL’, ‘UMAT\_SUBMATRIX\_FLAG’, ‘UMAT\_TYPE\_MASK’, ‘UMat’, ‘UMatData\_ASYNC\_CLEANUP’, ‘UMatData\_COPY\_ON\_MAP’, ‘UMatData\_DEVICE\_COPY\_OBSOLETE’, ‘UMatData\_DEVICE\_MEM\_MAPPED’, ‘UMatData\_HOST\_COPY\_OBSOLETE’, ‘UMatData\_TEMP\_COPIED\_UMAT’, ‘UMatData\_TEMP\_UMAT’, ‘UMatData\_USER\_ALLOCATED’, ‘UMat\_AUTO\_STEP’, ‘UMat\_CONTINUOUS\_FLAG’, ‘UMat\_DEPTH\_MASK’, ‘UMat\_MAGIC\_MASK’, ‘UMat\_MAGIC\_VAL’, ‘UMat\_SUBMATRIX\_FLAG’, ‘UMat\_TYPE\_MASK’, ‘UMat\_context’, ‘UMat\_queue’, ‘USAGE\_ALLOCATE\_DEVICE\_MEMORY’, ‘USAGE\_ALLOCATE\_HOST\_MEMORY’, ‘USAGE\_ALLOCATE\_SHARED\_MEMORY’, ‘USAGE\_DEFAULT’, ‘VIDEOWRITER\_PROP\_FRAMEBYTES’, ‘VIDEOWRITER\_PROP\_NSTRIPES’, ‘VIDEOWRITER\_PROP\_QUALITY’, ‘VariationalRefinement’, ‘VariationalRefinement\_create’, ‘VideoCapture’, ‘VideoWriter’, ‘VideoWriter\_fourcc’, ‘WARP\_FILL\_OUTLIERS’, ‘WARP\_INVERSE\_MAP’, ‘WARP\_POLAR\_LINEAR’, ‘WARP\_POLAR\_LOG’, ‘WINDOW\_AUTOSIZE’, ‘WINDOW\_FREERATIO’, ‘WINDOW\_FULLSCREEN’, ‘WINDOW\_GUI\_EXPANDED’, ‘WINDOW\_GUI\_NORMAL’, ‘WINDOW\_KEEPRATIO’, ‘WINDOW\_NORMAL’, ‘WINDOW\_OPENGL’, ‘WND\_PROP\_ASPECT\_RATIO’, ‘WND\_PROP\_AUTOSIZE’, ‘WND\_PROP\_FULLSCREEN’, ‘WND\_PROP\_OPENGL’, ‘WND\_PROP\_VISIBLE’, ‘WarperCreator’, ‘\_INPUT\_ARRAY\_CUDA\_GPU\_MAT’, ‘\_INPUT\_ARRAY\_CUDA\_HOST\_MEM’, ‘\_INPUT\_ARRAY\_EXPR’, ‘\_INPUT\_ARRAY\_FIXED\_SIZE’, ‘\_INPUT\_ARRAY\_FIXED\_TYPE’, ‘\_INPUT\_ARRAY\_KIND\_MASK’, ‘\_INPUT\_ARRAY\_KIND\_SHIFT’, ‘\_INPUT\_ARRAY\_MAT’, ‘\_INPUT\_ARRAY\_MATX’, ‘\_INPUT\_ARRAY\_NONE’, ‘\_INPUT\_ARRAY\_OPENGL\_BUFFER’, ‘\_INPUT\_ARRAY\_STD\_ARRAY’, ‘\_INPUT\_ARRAY\_STD\_ARRAY\_MAT’, ‘\_INPUT\_ARRAY\_STD\_BOOL\_VECTOR’, ‘\_INPUT\_ARRAY\_STD\_VECTOR’, ‘\_INPUT\_ARRAY\_STD\_VECTOR\_CUDA\_GPU\_MAT’, ‘\_INPUT\_ARRAY\_STD\_VECTOR\_MAT’, ‘\_INPUT\_ARRAY\_STD\_VECTOR\_UMAT’, ‘\_INPUT\_ARRAY\_STD\_VECTOR\_VECTOR’, ‘\_INPUT\_ARRAY\_UMAT’, ‘\_InputArray\_CUDA\_GPU\_MAT’, ‘\_InputArray\_CUDA\_HOST\_MEM’, ‘\_InputArray\_EXPR’, ‘\_InputArray\_FIXED\_SIZE’, ‘\_InputArray\_FIXED\_TYPE’, ‘\_InputArray\_KIND\_MASK’, ‘\_InputArray\_KIND\_SHIFT’, ‘\_InputArray\_MAT’, ‘\_InputArray\_MATX’, ‘\_InputArray\_NONE’, ‘\_InputArray\_OPENGL\_BUFFER’, ‘\_InputArray\_STD\_ARRAY’, ‘\_InputArray\_STD\_ARRAY\_MAT’, ‘\_InputArray\_STD\_BOOL\_VECTOR’, ‘\_InputArray\_STD\_VECTOR’, ‘\_InputArray\_STD\_VECTOR\_CUDA\_GPU\_MAT’, ‘\_InputArray\_STD\_VECTOR\_MAT’, ‘\_InputArray\_STD\_VECTOR\_UMAT’, ‘\_InputArray\_STD\_VECTOR\_VECTOR’, ‘\_InputArray\_UMAT’, ‘\_OUTPUT\_ARRAY\_DEPTH\_MASK\_16F’, ‘\_OUTPUT\_ARRAY\_DEPTH\_MASK\_16S’, ‘\_OUTPUT\_ARRAY\_DEPTH\_MASK\_16U’, ‘\_OUTPUT\_ARRAY\_DEPTH\_MASK\_32F’, ‘\_OUTPUT\_ARRAY\_DEPTH\_MASK\_32S’, ‘\_OUTPUT\_ARRAY\_DEPTH\_MASK\_64F’, ‘\_OUTPUT\_ARRAY\_DEPTH\_MASK\_8S’, ‘\_OUTPUT\_ARRAY\_DEPTH\_MASK\_8U’, ‘\_OUTPUT\_ARRAY\_DEPTH\_MASK\_ALL’, ‘\_OUTPUT\_ARRAY\_DEPTH\_MASK\_ALL\_16F’, ‘\_OUTPUT\_ARRAY\_DEPTH\_MASK\_ALL\_BUT\_8S’, ‘\_OUTPUT\_ARRAY\_DEPTH\_MASK\_FLT’, ‘\_OutputArray\_DEPTH\_MASK\_16F’, ‘\_OutputArray\_DEPTH\_MASK\_16S’, ‘\_OutputArray\_DEPTH\_MASK\_16U’, ‘\_OutputArray\_DEPTH\_MASK\_32F’, ‘\_OutputArray\_DEPTH\_MASK\_32S’, ‘\_OutputArray\_DEPTH\_MASK\_64F’, ‘\_OutputArray\_DEPTH\_MASK\_8S’, ‘\_OutputArray\_DEPTH\_MASK\_8U’, ‘\_OutputArray\_DEPTH\_MASK\_ALL’, ‘\_OutputArray\_DEPTH\_MASK\_ALL\_16F’, ‘\_OutputArray\_DEPTH\_MASK\_ALL\_BUT\_8S’, ‘\_OutputArray\_DEPTH\_MASK\_FLT’, ‘\_\_UMAT\_USAGE\_FLAGS\_32BIT’, ‘**doc**’, ‘**file**’, ‘**loader**’, ‘**name**’, ‘**package**’, ‘**spec**’, ‘**version**’, ‘absdiff’, ‘accumulate’, ‘accumulateProduct’, ‘accumulateSquare’, ‘accumulateWeighted’, ‘adaptiveThreshold’, ‘add’, ‘addText’, ‘addWeighted’, ‘applyColorMap’, ‘approxPolyDP’, ‘arcLength’, ‘arrowedLine’, ‘aruco’, ‘aruco\_Board’, ‘aruco\_CharucoBoard’, ‘aruco\_DetectorParameters’, ‘aruco\_Dictionary’, ‘aruco\_GridBoard’, ‘batchDistance’, ‘bgsegm’, ‘bgsegm\_BackgroundSubtractorCNT’, ‘bgsegm\_BackgroundSubtractorGMG’, ‘bgsegm\_BackgroundSubtractorGSOC’, ‘bgsegm\_BackgroundSubtractorLSBP’, ‘bgsegm\_BackgroundSubtractorLSBPDesc’, ‘bgsegm\_BackgroundSubtractorMOG’, ‘bgsegm\_SyntheticSequenceGenerator’, ‘bilateralFilter’, ‘bioinspired’, ‘bioinspired\_Retina’, ‘bioinspired\_RetinaFastToneMapping’, ‘bioinspired\_TransientAreasSegmentationModule’, ‘bitwise\_and’, ‘bitwise\_not’, ‘bitwise\_or’, ‘bitwise\_xor’, ‘blur’, ‘borderInterpolate’, ‘boundingRect’, ‘boxFilter’, ‘boxPoints’, ‘buildOpticalFlowPyramid’, ‘calcBackProject’, ‘calcCovarMatrix’, ‘calcHist’, ‘calcOpticalFlowFarneback’, ‘calcOpticalFlowPyrLK’, ‘calibrateCamera’, ‘calibrateCameraExtended’, ‘calibrateCameraRO’, ‘calibrateCameraROExtended’, ‘calibrateHandEye’, ‘calibrationMatrixValues’, ‘cartToPolar’, ‘checkChessboard’, ‘checkHardwareSupport’, ‘checkRange’, ‘circle’, ‘clipLine’, ‘colorChange’, ‘compare’, ‘compareHist’, ‘completeSymm’, ‘composeRT’, ‘computeCorrespondEpilines’, ‘computeECC’, ‘connectedComponents’, ‘connectedComponentsWithAlgorithm’, ‘connectedComponentsWithStats’, ‘connectedComponentsWithStatsWithAlgorithm’, ‘contourArea’, ‘convertFp16’, ‘convertMaps’, ‘convertPointsFromHomogeneous’, ‘convertPointsToHomogeneous’, ‘convertScaleAbs’, ‘convexHull’, ‘convexityDefects’, ‘copyMakeBorder’, ‘copyTo’, ‘cornerEigenValsAndVecs’, ‘cornerHarris’, ‘cornerMinEigenVal’, ‘cornerSubPix’, ‘correctMatches’, ‘countNonZero’, ‘createAffineTransformer’, ‘createAlignMTB’, ‘createBackgroundSubtractorKNN’, ‘createBackgroundSubtractorMOG2’, ‘createButton’, ‘createCLAHE’, ‘createCalibrateDebevec’, ‘createCalibrateRobertson’, ‘createChiHistogramCostExtractor’, ‘createEMDHistogramCostExtractor’, ‘createEMDL1HistogramCostExtractor’, ‘createGeneralizedHoughBallard’, ‘createGeneralizedHoughGuil’, ‘createHanningWindow’, ‘createHausdorffDistanceExtractor’, ‘createLineSegmentDetector’, ‘createMergeDebevec’, ‘createMergeMertens’, ‘createMergeRobertson’, ‘createNormHistogramCostExtractor’, ‘createShapeContextDistanceExtractor’, ‘createThinPlateSplineShapeTransformer’, ‘createTonemap’, ‘createTonemapDrago’, ‘createTonemapMantiuk’, ‘createTonemapReinhard’, ‘createTrackbar’, ‘cubeRoot’, ‘cuda’, ‘cuda\_BackgroundSubtractorMOG’, ‘cuda\_BackgroundSubtractorMOG2’, ‘cuda\_BroxOpticalFlow’, ‘cuda\_BufferPool’, ‘cuda\_CLAHE’, ‘cuda\_CannyEdgeDetector’, ‘cuda\_CascadeClassifier’, ‘cuda\_Convolution’, ‘cuda\_CornernessCriteria’, ‘cuda\_CornersDetector’, ‘cuda\_DFT’, ‘cuda\_DenseOpticalFlow’, ‘cuda\_DensePyrLKOpticalFlow’, ‘cuda\_DescriptorMatcher’, ‘cuda\_DeviceInfo’, ‘cuda\_DisparityBilateralFilter’, ‘cuda\_Event’, ‘cuda\_FarnebackOpticalFlow’, ‘cuda\_FastFeatureDetector’, ‘cuda\_Feature2DAsync’, ‘cuda\_Filter’, ‘cuda\_GpuMat’, ‘cuda\_GpuMat\_Allocator’, ‘cuda\_HOG’, ‘cuda\_HostMem’, ‘cuda\_HoughCirclesDetector’, ‘cuda\_HoughLinesDetector’, ‘cuda\_HoughSegmentDetector’, ‘cuda\_LookUpTable’, ‘cuda\_NvidiaHWOpticalFlow’, ‘cuda\_NvidiaOpticalFlow\_1\_0’, ‘cuda\_ORB’, ‘cuda\_OpticalFlowDual\_TVL1’, ‘cuda\_SparseOpticalFlow’, ‘cuda\_SparsePyrLKOpticalFlow’, ‘cuda\_StereoBM’, ‘cuda\_StereoBeliefPropagation’, ‘cuda\_StereoConstantSpaceBP’, ‘cuda\_Stream’, ‘cuda\_TargetArchs’, ‘cuda\_TemplateMatching’, ‘cudacodec’, ‘cudacodec\_EncoderCallBack’, ‘cudacodec\_EncoderParams’, ‘cudacodec\_RawVideoSource’, ‘cudacodec\_VideoReader’, ‘cudacodec\_VideoWriter’, ‘cvtColor’, ‘cvtColorTwoPlane’, ‘datasets’, ‘dct’, ‘decolor’, ‘decomposeEssentialMat’, ‘decomposeHomographyMat’, ‘decomposeProjectionMatrix’, ‘demosaicing’, ‘denoise\_TVL1’, ‘destroyAllWindows’, ‘destroyWindow’, ‘detail’, ‘detailEnhance’, ‘detail\_AffineBasedEstimator’, ‘detail\_AffineBestOf2NearestMatcher’, ‘detail\_BestOf2NearestMatcher’, ‘detail\_BestOf2NearestRangeMatcher’, ‘detail\_Blender’, ‘detail\_BlocksChannelsCompensator’, ‘detail\_BlocksCompensator’, ‘detail\_BlocksGainCompensator’, ‘detail\_BundleAdjusterAffine’, ‘detail\_BundleAdjusterAffinePartial’, ‘detail\_BundleAdjusterBase’, ‘detail\_BundleAdjusterRay’, ‘detail\_BundleAdjusterReproj’, ‘detail\_CameraParams’, ‘detail\_ChannelsCompensator’, ‘detail\_DpSeamFinder’, ‘detail\_Estimator’, ‘detail\_ExposureCompensator’, ‘detail\_FeatherBlender’, ‘detail\_FeaturesMatcher’, ‘detail\_GainCompensator’, ‘detail\_GraphCutSeamFinder’, ‘detail\_HomographyBasedEstimator’, ‘detail\_ImageFeatures’, ‘detail\_MatchesInfo’, ‘detail\_MultiBandBlender’, ‘detail\_NoBundleAdjuster’, ‘detail\_NoExposureCompensator’, ‘detail\_NoSeamFinder’, ‘detail\_PairwiseSeamFinder’, ‘detail\_ProjectorBase’, ‘detail\_SeamFinder’, ‘detail\_SphericalProjector’, ‘detail\_Timelapser’, ‘detail\_TimelapserCrop’, ‘detail\_VoronoiSeamFinder’, ‘determinant’, ‘dft’, ‘dilate’, ‘displayOverlay’, ‘displayStatusBar’, ‘distanceTransform’, ‘distanceTransformWithLabels’, ‘divide’, ‘dnn’, ‘dnn\_DictValue’, ‘dnn\_Layer’, ‘dnn\_Net’, ‘dnn\_registerLayer’, ‘dnn\_unregisterLayer’, ‘dpm\_DPMDetector’, ‘dpm\_DPMDetector\_ObjectDetection’, ‘drawChessboardCorners’, ‘drawContours’, ‘drawFrameAxes’, ‘drawKeypoints’, ‘drawMarker’, ‘drawMatches’, ‘drawMatchesKnn’, ‘edgePreservingFilter’, ‘eigen’, ‘eigenNonSymmetric’, ‘ellipse’, ‘ellipse2Poly’, ‘equalizeHist’, ‘erode’, ‘error’, ‘estimateAffine2D’, ‘estimateAffine3D’, ‘estimateAffinePartial2D’, ‘exp’, ‘extractChannel’, ‘face’, ‘face\_BIF’, ‘face\_BasicFaceRecognizer’, ‘face\_EigenFaceRecognizer’, ‘face\_FaceRecognizer’, ‘face\_Facemark’, ‘face\_FacemarkAAM’, ‘face\_FacemarkKazemi’, ‘face\_FacemarkLBF’, ‘face\_FacemarkTrain’, ‘face\_FisherFaceRecognizer’, ‘face\_LBPHFaceRecognizer’, ‘face\_MACE’, ‘face\_PredictCollector’, ‘face\_StandardCollector’, ‘fastAtan2’, ‘fastNlMeansDenoising’, ‘fastNlMeansDenoisingColored’, ‘fastNlMeansDenoisingColoredMulti’, ‘fastNlMeansDenoisingMulti’, ‘fillConvexPoly’, ‘fillPoly’, ‘filter2D’, ‘filterHomographyDecompByVisibleRefpoints’, ‘filterSpeckles’, ‘find4QuadCornerSubpix’, ‘findChessboardCorners’, ‘findChessboardCornersSB’, ‘findCirclesGrid’, ‘findContours’, ‘findEssentialMat’, ‘findFundamentalMat’, ‘findHomography’, ‘findNonZero’, ‘findTransformECC’, ‘fisheye’, ‘fitEllipse’, ‘fitEllipseAMS’, ‘fitEllipseDirect’, ‘fitLine’, ‘flann’, ‘flann\_Index’, ‘flip’, ‘floodFill’, ‘ft’, ‘gemm’, ‘getAffineTransform’, ‘getBuildInformation’, ‘getCPUTickCount’, ‘getDefaultNewCameraMatrix’, ‘getDerivKernels’, ‘getFontScaleFromHeight’, ‘getGaborKernel’, ‘getGaussianKernel’, ‘getHardwareFeatureName’, ‘getNumThreads’, ‘getNumberOfCPUs’, ‘getOptimalDFTSize’, ‘getOptimalNewCameraMatrix’, ‘getPerspectiveTransform’, ‘getRectSubPix’, ‘getRotationMatrix2D’, ‘getStructuringElement’, ‘getTextSize’, ‘getThreadNum’, ‘getTickCount’, ‘getTickFrequency’, ‘getTrackbarPos’, ‘getValidDisparityROI’, ‘getVersionMajor’, ‘getVersionMinor’, ‘getVersionRevision’, ‘getVersionString’, ‘getWindowImageRect’, ‘getWindowProperty’, ‘goodFeaturesToTrack’, ‘grabCut’, ‘groupRectangles’, ‘haveImageReader’, ‘haveImageWriter’, ‘haveOpenVX’, ‘hconcat’, ‘hdf’, ‘hdf\_HDF5’, ‘hfs’, ‘hfs\_HfsSegment’, ‘idct’, ‘idft’, ‘illuminationChange’, ‘imdecode’, ‘imencode’, ‘img\_hash’, ‘img\_hash\_AverageHash’, ‘img\_hash\_BlockMeanHash’, ‘img\_hash\_ColorMomentHash’, ‘img\_hash\_ImgHashBase’, ‘img\_hash\_MarrHildrethHash’, ‘img\_hash\_PHash’, ‘img\_hash\_RadialVarianceHash’, ‘imread’, ‘imreadmulti’, ‘imshow’, ‘imwrite’, ‘inRange’, ‘initCameraMatrix2D’, ‘initUndistortRectifyMap’, ‘inpaint’, ‘insertChannel’, ‘instr’, ‘integral’, ‘integral2’, ‘integral3’, ‘intersectConvexConvex’, ‘invert’, ‘invertAffineTransform’, ‘ipp’, ‘isContourConvex’, ‘kinfu’, ‘kinfu\_KinFu’, ‘kinfu\_Params’, ‘kmeans’, ‘line’, ‘line\_descriptor’, ‘line\_descriptor\_BinaryDescriptor’, ‘line\_descriptor\_BinaryDescriptorMatcher’, ‘line\_descriptor\_DrawLinesMatchesFlags’, ‘line\_descriptor\_KeyLine’, ‘line\_descriptor\_LSDDetector’, ‘line\_descriptor\_LSDParam’, ‘linearPolar’, ‘linemod’, ‘linemod\_ColorGradient’, ‘linemod\_DepthNormal’, ‘linemod\_Detector’, ‘linemod\_Feature’, ‘linemod\_Match’, ‘linemod\_Modality’, ‘linemod\_QuantizedPyramid’, ‘linemod\_Template’, ‘log’, ‘logPolar’, ‘magnitude’, ‘matMulDeriv’, ‘matchShapes’, ‘matchTemplate’, ‘max’, ‘mean’, ‘meanShift’, ‘meanStdDev’, ‘medianBlur’, ‘merge’, ‘min’, ‘minAreaRect’, ‘minEnclosingCircle’, ‘minEnclosingTriangle’, ‘minMaxLoc’, ‘mixChannels’, ‘ml’, ‘ml\_ANN\_MLP’, ‘ml\_Boost’, ‘ml\_DTrees’, ‘ml\_EM’, ‘ml\_KNearest’, ‘ml\_LogisticRegression’, ‘ml\_NormalBayesClassifier’, ‘ml\_ParamGrid’, ‘ml\_RTrees’, ‘ml\_SVM’, ‘ml\_SVMSGD’, ‘ml\_StatModel’, ‘ml\_TrainData’, ‘moments’, ‘morphologyEx’, ‘motempl’, ‘moveWindow’, ‘mulSpectrums’, ‘mulTransposed’, ‘multicalib’, ‘multiply’, ‘namedWindow’, ‘norm’, ‘normalize’, ‘ocl’, ‘ocl\_Device’, ‘ogl’, ‘omnidir’, ‘optflow’, ‘optflow\_DenseRLOFOpticalFlow’, ‘optflow\_DualTVL1OpticalFlow’, ‘optflow\_GPCDetails’, ‘optflow\_GPCPatchDescriptor’, ‘optflow\_GPCPatchSample’, ‘optflow\_GPCTrainingSamples’, ‘optflow\_GPCTree’, ‘optflow\_OpticalFlowPCAFlow’, ‘optflow\_PCAPrior’, ‘optflow\_RLOFOpticalFlowParameter’, ‘optflow\_SparseRLOFOpticalFlow’, ‘patchNaNs’, ‘pencilSketch’, ‘perspectiveTransform’, ‘phase’, ‘phaseCorrelate’, ‘phase\_unwrapping\_HistogramPhaseUnwrapping’, ‘phase\_unwrapping\_PhaseUnwrapping’, ‘plot’, ‘plot\_Plot2d’, ‘pointPolygonTest’, ‘polarToCart’, ‘polylines’, ‘pow’, ‘ppf\_match\_3d’, ‘ppf\_match\_3d\_ICP’, ‘ppf\_match\_3d\_PPF3DDetector’, ‘ppf\_match\_3d\_Pose3D’, ‘ppf\_match\_3d\_PoseCluster3D’, ‘preCornerDetect’, ‘projectPoints’, ‘putText’, ‘pyrDown’, ‘pyrMeanShiftFiltering’, ‘pyrUp’, ‘quality’, ‘quality\_QualityBRISQUE’, ‘quality\_QualityBase’, ‘quality\_QualityGMSD’, ‘quality\_QualityMSE’, ‘quality\_QualityPSNR’, ‘quality\_QualitySSIM’, ‘randShuffle’, ‘randn’, ‘randu’, ‘readOpticalFlow’, ‘recoverPose’, ‘rectangle’, ‘rectify3Collinear’, ‘redirectError’, ‘reduce’, ‘reg’, ‘reg\_Map’, ‘reg\_MapAffine’, ‘reg\_MapProjec’, ‘reg\_MapShift’, ‘reg\_MapTypeCaster’, ‘reg\_Mapper’, ‘reg\_MapperGradAffine’, ‘reg\_MapperGradEuclid’, ‘reg\_MapperGradProj’, ‘reg\_MapperGradShift’, ‘reg\_MapperGradSimilar’, ‘reg\_MapperPyramid’, ‘remap’, ‘repeat’, ‘reprojectImageTo3D’, ‘resize’, ‘resizeWindow’, ‘rgbd’, ‘rgbd\_DepthCleaner’, ‘rgbd\_FastICPOdometry’, ‘rgbd\_ICPOdometry’, ‘rgbd\_Odometry’, ‘rgbd\_OdometryFrame’, ‘rgbd\_RgbdFrame’, ‘rgbd\_RgbdICPOdometry’, ‘rgbd\_RgbdNormals’, ‘rgbd\_RgbdOdometry’, ‘rgbd\_RgbdPlane’, ‘rotate’, ‘rotatedRectangleIntersection’, ‘saliency’, ‘saliency\_MotionSaliency’, ‘saliency\_MotionSaliencyBinWangApr2014’, ‘saliency\_Objectness’, ‘saliency\_ObjectnessBING’, ‘saliency\_Saliency’, ‘saliency\_StaticSaliency’, ‘saliency\_StaticSaliencyFineGrained’, ‘saliency\_StaticSaliencySpectralResidual’, ‘samples’, ‘sampsonDistance’, ‘scaleAdd’, ‘seamlessClone’, ‘selectROI’, ‘selectROIs’, ‘sepFilter2D’, ‘setIdentity’, ‘setMouseCallback’, ‘setNumThreads’, ‘setRNGSeed’, ‘setTrackbarMax’, ‘setTrackbarMin’, ‘setTrackbarPos’, ‘setUseOpenVX’, ‘setUseOptimized’, ‘setWindowProperty’, ‘setWindowTitle’, ‘sfm’, ‘sfm\_BaseSFM’, ‘sfm\_SFMLibmvEuclideanReconstruction’, ‘sfm\_libmv\_CameraIntrinsicsOptions’, ‘sfm\_libmv\_ReconstructionOptions’, ‘solve’, ‘solveCubic’, ‘solveLP’, ‘solveP3P’, ‘solvePnP’, ‘solvePnPGeneric’, ‘solvePnPRansac’, ‘solvePnPRefineLM’, ‘solvePnPRefineVVS’, ‘solvePoly’, ‘sort’, ‘sortIdx’, ‘spatialGradient’, ‘split’, ‘sqrBoxFilter’, ‘sqrt’, ‘startWindowThread’, ‘stereoCalibrate’, ‘stereoCalibrateExtended’, ‘stereoRectify’, ‘stereoRectifyUncalibrated’, ‘structured\_light’, ‘structured\_light\_GrayCodePattern’, ‘structured\_light\_SinusoidalPattern’, ‘structured\_light\_SinusoidalPattern\_Params’, ‘structured\_light\_StructuredLightPattern’, ‘stylization’, ‘subtract’, ‘sumElems’, ‘text’, ‘text\_BaseOCR’, ‘text\_ERFilter’, ‘text\_ERFilter\_Callback’, ‘text\_OCRBeamSearchDecoder’, ‘text\_OCRBeamSearchDecoder\_ClassifierCallback’, ‘text\_OCRHMMDecoder’, ‘text\_OCRHMMDecoder\_ClassifierCallback’, ‘text\_OCRTesseract’, ‘text\_TextDetector’, ‘text\_TextDetectorCNN’, ‘textureFlattening’, ‘threshold’, ‘trace’, ‘transform’, ‘transpose’, ‘triangulatePoints’, ‘undistort’, ‘undistortPoints’, ‘undistortPointsIter’, ‘useOpenVX’, ‘useOptimized’, ‘utils’, ‘validateDisparity’, ‘vconcat’, ‘videoio\_registry’, ‘videostab’, ‘waitKey’, ‘waitKeyEx’, ‘warpAffine’, ‘warpPerspective’, ‘warpPolar’, ‘watershed’, ‘writeOpticalFlow’, ‘xfeatures2d’, ‘xfeatures2d\_BoostDesc’, ‘xfeatures2d\_BriefDescriptorExtractor’, ‘xfeatures2d\_DAISY’, ‘xfeatures2d\_FREAK’, ‘xfeatures2d\_HarrisLaplaceFeatureDetector’, ‘xfeatures2d\_LATCH’, ‘xfeatures2d\_LUCID’, ‘xfeatures2d\_MSDDetector’, ‘xfeatures2d\_PCTSignatures’, ‘xfeatures2d\_PCTSignaturesSQFD’, ‘xfeatures2d\_SIFT’, ‘xfeatures2d\_SURF’, ‘xfeatures2d\_StarDetector’, ‘xfeatures2d\_VGG’, ‘ximgproc’, ‘ximgproc\_AdaptiveManifoldFilter’, ‘ximgproc\_ContourFitting’, ‘ximgproc\_DTFilter’, ‘ximgproc\_DisparityFilter’, ‘ximgproc\_DisparityWLSFilter’, ‘ximgproc\_EdgeAwareInterpolator’, ‘ximgproc\_EdgeBoxes’, ‘ximgproc\_FastBilateralSolverFilter’, ‘ximgproc\_FastGlobalSmootherFilter’, ‘ximgproc\_FastLineDetector’, ‘ximgproc\_GuidedFilter’, ‘ximgproc\_RFFeatureGetter’, ‘ximgproc\_RidgeDetectionFilter’, ‘ximgproc\_SparseMatchInterpolator’, ‘ximgproc\_StructuredEdgeDetection’, ‘ximgproc\_SuperpixelLSC’, ‘ximgproc\_SuperpixelSEEDS’, ‘ximgproc\_SuperpixelSLIC’, ‘ximgproc\_segmentation\_GraphSegmentation’, ‘ximgproc\_segmentation\_SelectiveSearchSegmentation’, ‘ximgproc\_segmentation\_SelectiveSearchSegmentationStrategy’, ‘ximgproc\_segmentation\_SelectiveSearchSegmentationStrategyColor’, ‘ximgproc\_segmentation\_SelectiveSearchSegmentationStrategyFill’, ‘ximgproc\_segmentation\_SelectiveSearchSegmentationStrategyMultiple’, ‘ximgproc\_segmentation\_SelectiveSearchSegmentationStrategySize’, ‘ximgproc\_segmentation\_SelectiveSearchSegmentationStrategyTexture’, ‘xphoto’, ‘xphoto\_GrayworldWB’, ‘xphoto\_LearningBasedWB’, ‘xphoto\_SimpleWB’, ‘xphoto\_TonemapDurand’, ‘xphoto\_WhiteBalancer’\]  
“”"

我将上述dir显示的所有方法都打印在了上面，可以复制下来对比哪些方法能用，哪些不能。对于进行GPU编译过的opencv来讲，cv2.cuda下的基本都是GPU方法，而cv2里的方法还是CPU的，这也导致了opencv的局限性，因为目前所提供的编译版本的cuda方法都是基于图像的变化和算法，对流的部分是一个空缺，所以如果如果要对视频做操作的话，很大概率会导致内存泄漏：

![Image 1][]

这是我之前的valgrind测试报告，可以很明显的看出在用opencv进行操作的时候有内存泄漏。所以如果只是对图片做某些算法操作，比如DNN、canny等，速度提升是很明显的。但只是resize或者read这样的操作，都无法发挥出GPU本来的优势，运行效率反而不如直接CPU快，具体原因可以看我下面的三种写法：

**OpenCV Mat与UMat**

OpenCV3以后引入了一个新的图像容器对象UMat，它的使用与功能基本和Mat类似，但一个代表着将图片存进GPU，一个是CPU，UMat格式需要支持openCL，OpenCL是一个面向异构系统通用的并行编程标准，也是基于此，才能在opencv中实现UMat和Mat的转换：

cv::Mat inMat, outMat;
    vidInput >> inMat;
    cv::cvtColor(inMat, outMat, cv::COLOR_RGB2GRAY);
    vidOutput << outMat;

上面是C++的伪代码，而python的写法和这个类似：

img_Mat = cv2.imread('test.jpg') # 16-bit float, <class 'numpy.ndarray'>
    img_UMat = cv2.UMat(img_Mat)  # 16-bit float, <class 'cv2.UMat'>

在opencv-python中，目前我已知的4.1.0以上版本是都有同意OpenGL，如果想知道到底支不支持，可以输入如下代码测试：

import cv2
    print('OpenCL available:', cv2.ocl.haveOpenCL())

返回True即为支持openCL，而如果项目中报错"cv::ocl::OpenCLAllocator::upload"，这是因为当前版本的openCL与显卡驱动或者说cuda不兼容，所以安全起见，可以设置cv2.ocl.setUseOpenCL(False)。

另外，在[GPU enabled OpenCV in Python][]中，写了一个例子：

"""
    cpu_gpu.py
    An OpenCL-OpenCV-Python CPU vs GPU comparison
    """
    import cv2
    import timeit

# A simple image pipeline that runs on both Mat and Umat #

def img\_cal(img, mode):  
if mode==‘UMat’:  
img = cv2.UMat(img)  
img = cv2.cvtColor(img, cv2.COLOR\_BGR2GRAY)  
img = cv2.GaussianBlur(img, (7, 7), 1.5)  
img = cv2.Canny(img, 0, 50)  
if type(img) == ‘cv2.UMat’:  
img = cv2.UMat.get(img)  
return img

# Timing function #

def run(processor, function, n\_threads, N):  
cv2.setNumThreads(n\_threads)  
t = timeit.timeit(function, globals=globals(), number=N)/N\*1000  
print(’%s avg. with %d threads: %0.2f ms’ % (processor, n, t))  
return t

img = cv2.imread(‘ct.tif’)  
N = 1000  
threads = \[1, 16\]

processor = \{‘GPU’: “img\_cal(img\_UMat)”,  
‘CPU’: “img\_cal(img)”\}  
results = \{\}  
for n in n\_threads:  
for pro in processor.keys():  
results\[pro,n\] = run(processor=pro,  
function= processor\[pro\],  
n\_threads=n, N=N)

print(’\\nGPU speed increase over 1 CPU thread \[%%\]: %0.2f’ %  
(results\[(‘CPU’, 1)\]/results\[(‘GPU’, 1)\]\*100))  
print(‘CPU speed increase on 4 threads versus 1 thread \[%%\]: %0.2f’ %  
(results\[(‘CPU’, 1)\]/results\[(‘CPU’, 16)\]\*100))  
print(‘GPU speed increase versus 4 threads \[%%\]: %0.2f’ %  
(results\[(‘CPU’, 4)\]/results\[(‘CPU’, 1)\]\*100))

这段代码分别计算了GPU和CPU对于图像进行灰度化到边缘检测的时间，然后看起来测试结果是比较让人满意的：

GPU avg. with 1 threads: 2.07 ms
    CPU avg. with 1 threads: 5.70 ms
    GPU avg. with 16 threads: 2.09 ms
    CPU avg. with 16 threads: 2.70 ms

GPU speed increase over 1 CPU thread \[%\]: 275.11  
CPU speed increase on 16 threads versus 1 CPU thread \[%\]: 210.82  
GPU speed increase versus 16 CPU threads \[%\]: 47.43

但实际上，我在多进程读取图像做分析的时候发现，如果用UMat的格式，其生产图片的效率远远没有我消费速度快，因为我没有做什么算法相关操作，并且在进程数达到一定量，它会出现异常，也就是说，在我的测试中，它并不太适用于多进程或者多线程，虽然这个是最简单的方案。

**使用GPU下的opencv**

使用的步骤与上面方法类似，只是OpenCV中GPU模块，已经封装的内核函数的调用，其使用步骤如下：

1.验证OpenCV是否已启用GPU模块。

2.上传待处理数据到GPU (Mat --> GpuMat)。

3.调用OpenCV支持的GPU的处理函数。

4.下载处理结果到CPU (GpuMat —> Mat)。

其示例程序如下，完成颜色转换，BGR2GRAY。

这个版本的方法就比上面Umat的方式多很多，也是我在开头引用的所有函数以及相关对象方法都是经过GPU编译的opencv，这个版本是一定要经过编译的，编译的坑我会在之后的博文中说明，那么在编译成功后，就可以看到我介绍的函数，以及GitHub中有一个demo可以运行：

#!/usr/bin/env python

‘’’  
CUDA-accelerated Computer Vision functions  
‘’’

# Python 2/3 compatibility #

from **future** import print\_function

import numpy as np  
import cv2 as cv  
import os

from tests\_common import NewOpenCVTests, unittest

class cuda\_test(NewOpenCVTests):  
def setUp(self):  
super(cuda\_test, self).setUp()  
if not cv.cuda.getCudaEnabledDeviceCount():  
self.skipTest(“No CUDA-capable device is detected”)

def test\_cuda\_upload\_download(self):  
npMat = (np.random.random((128, 128, 3)) \* 255).astype(np.uint8)  
cuMat = cv.cuda\_GpuMat()  
cuMat.upload(npMat)

self.assertTrue(np.allclose(cuMat.download(), npMat))

def test\_cuda\_interop(self):  
npMat = (np.random.random((128, 128, 3)) \* 255).astype(np.uint8)  
cuMat = cv.cuda\_GpuMat()  
cuMat.upload(npMat)  
self.assertTrue(cuMat.cudaPtr() != 0)  
stream = cv.cuda\_Stream()  
self.assertTrue(stream.cudaPtr() != 0)

if **name** == ‘**main**’:  
NewOpenCVTests.bootstrap()

关于上述更详细的参数介绍，可以通过opencv官方的C++文档进行比对：

[cv::cuda::GpuMat Class Reference][cv_cuda_GpuMat Class Reference]

上面的代码如果理解了UMat格式的定义，那么这里的opencv产生的数据结构就是gpu\_mat，相对应的get方法换成了download，而图片首先要upload进这个gpu\_mat容器里，它要比UMat更可靠与完整，在opencv4.1以后已经建立了相关的生态体系，除了解码之外，我看到大多数用opencv的都是在用GPU的dnn算法，从issue的实验结果上看，确实提升是巨大的。

但这里还是有一个问题，如果出现内存泄漏，怎样去规避和降低，这个只能说因代码而异了。。我在kaggle和opencv官网上找到了两种方案来解决这个问题，但对我来说没啥作用，但如果出现了泄漏，这两种可以参考：

使用gc手动回收：

import cv2
    import os
    import gc

images\_path = “…/input/aptos2019-blindness-detection/train\_images/”  
image\_names = os.listdir(images\_path)  
for image\_name in image\_names:  
img = cv2.imread(images\_path + image\_name)  
del img  
gc.collect()

[https://www.kaggle.com/c/aptos2019-blindness-detection/discussion/106622][https_www.kaggle.com_c_aptos2019-blindness-detection_discussion_106622]

使用qimage2ndarray库：

def display_video_stream(self):
    """Read frame from camera and repaint QLabel widget.
    """

\_, frame = self.capture.read()

frame = cv2.cvtColor(frame, cv2.COLOR\_BGR2RGB)

# frame = cv2.flip(frame, 1) #

image = qimage2ndarray.array2qimage(frame) \#Solution for memory leak  
self.image\_label.setPixmap(QPixmap.fromImage(image))

[https://answers.opencv.org/question/136206/memory-leak-while-using-cv2videocapture/][https_answers.opencv.org_question_136206_memory-leak-while-using-cv2videocapture]

最后，我引用一张opencv使用cuda运行程序的流程图来说明内部过程，取自【OpenCV】OpenCV中GPU模块使用，我觉得是比较生动形象了：

![Image 1][]

到此这篇关于详解python中GPU版本的opencv常用方法介绍的文章就介绍到这了,更多相关python中GPU版本的opencv内容请搜索菜鸟教程www.piaodoo.com以前的文章或继续浏览下面的相关文章希望大家以后多多支持菜鸟教程www.piaodoo.com！

[Link 1]: https://www.piaodoo.com/
[Link 2]: http://www.nrso.net/
[Link 3]: https://www.hnthzk.com/
[Image 1]: 
[GPU enabled OpenCV in Python]: http://ryanmaciver.com/opencv-for-gpu-processing/
[cv_cuda_GpuMat Class Reference]: https://docs.opencv.org/master/d0/d60/classcv_1_1cuda_1_1GpuMat.html
[https_www.kaggle.com_c_aptos2019-blindness-detection_discussion_106622]: https://www.kaggle.com/c/aptos2019-blindness-detection/discussion/106622
[https_answers.opencv.org_question_136206_memory-leak-while-using-cv2videocapture]: https://answers.opencv.org/question/136206/memory-leak-while-using-cv2videocapture/