OpenCV+海康威视摄像头的实时读取

小鱼儿 2022-07-15 02:24 543阅读 0赞

# [OpenCV+海康威视摄像头的实时读取 ][OpenCV]![bole_recommd_logo.png][] #

标签： [opencv][][vs2012][][海康威视][Link 1]

2015-12-18 11:12  11855人阅读  [评论][Link 2](24)  收藏  [举报][Link 3]

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图形视觉UI（33） ![arrow_triangle_20_down.jpg][]  windows（75） ![arrow_triangle_20_down.jpg][]

目录[(?)][Link 4][\[+\]][Link 4]

# OpenCV+海康威视摄像头的实时读取 #

本文由 @[lonelyrains][]出品，转载请注明出处。   
文章链接： [http://blog.csdn.net/lonelyrains/article/details/50350052][OpenCV]

之前没想过会有这么多朋友遇到问题，所以建了一个qq群536898072，专门供大家以后一起交流讨论图像和[机器学习][Link 5]的工程实践问题。

## 环境 ##

*  硬件：   
    PC：i7-4970 16GB内存 摄像头型号：DS-2CD3310D-I（2.8mm）
 *  软件：   
    windows-x64、vs2012、[opencv2.4.8][]、[hkvision5114-x64版本库][hkvision5114-x64]

## 配置 ##

*  保证使用[SADP][]工具可以识别摄像头，然后配置IP与电脑在同一个网段。   
    ![这里写图片描述][20151218104845677]
 *  再保证可以从浏览器中访问。账号密码默认的一般是admin、a123456789(老版本的摄像头密码是12345)。   
    ![这里写图片描述][20151218104858137]  
    登录成功后可能要求下载WebComponent控件，下载好了安装便是。如果仍然出现如下画面：   
    ![这里写图片描述][20151218105019819]  
    则换一种浏览器试。一般是默认浏览器没问题的。   
    ![这里写图片描述][20151218105153166]
 *  配置使用sdk中自带的ClientDemo.exe工具可以访问   
    ![这里写图片描述][20151218105130405]   
    ![这里写图片描述][20151218105139779]
 *  配置sdk开发环境   
    – opencv的配置   
    这里不展开讲opencv的配置，仅说明需要配置opencv环境变量、设置好对应的vs开发环境的属性配置   
    ![这里写图片描述][20151218105708651]   
    ![这里写图片描述][20151218105724334]   
    ![这里写图片描述][20151218105733317]   
    – 海康威视sdk属性配置   
    因为是64位环境，为了增强属性配置的内聚性，单独添加新项目属性表，设置海康威视sdk的属性   
    ![这里写图片描述][20151218105920856]   
    ![这里写图片描述][20151218110002547]   
    ![这里写图片描述][20151218110016581]   
    ![这里写图片描述][20151218110027645]  
    依赖库写全，为：   
    HCNetSDK.lib;PlayCtrl.lib;ws2\_32.lib;winmm.lib;GdiPlus.lib;IPHlpApi.Lib;%(AdditionalDependencies)

## 代码及说明 ##

<code class="language-c++ hljs cpp has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">#include <opencv\cv.h>
 #include <opencv\highgui.h>
 
 #include <iostream>
 
 #include <cstdio>
 #include <cstring>
 #include <iostream>
 #include <windows.h>
 #include <HCNetSDK.h>
 /*#include "PlayM4.h"*/
 #include <plaympeg4.h>
 #include <opencv2\opencv.hpp>
 #include <time.h>
 
 #include "global.h"
 #include "readCamera.h"
 
 #define USECOLOR 1
 
 using namespace cv;
 using namespace std;
 
 //--------------------------------------------
 int iPicNum=0;//Set channel NO.
 LONG nPort=-1;
 HWND hWnd=NULL;
 
 
 void yv12toYUV(char *outYuv, char *inYv12, int width, int height,int widthStep)
 {
 int col,row;
 unsigned int Y,U,V;
 int tmp;
 int idx;
 
 //printf("widthStep=%d.\n",widthStep);
 
 for (row=0; row<height; row++)
 {
 idx=row * widthStep;
 int rowptr=row*width;
 
 for (col=0; col<width; col++)
 {
 //int colhalf=col>>1;
 tmp = (row/2)*(width/2)+(col/2);
 // if((row==1)&&( col>=1400 &&col<=1600))
 // { 
 // printf("col=%d,row=%d,width=%d,tmp=%d.\n",col,row,width,tmp);
 // printf("row*width+col=%d,width*height+width*height/4+tmp=%d,width*height+tmp=%d.\n",row*width+col,width*height+width*height/4+tmp,width*height+tmp);
 // } 
 Y=(unsigned int) inYv12[row*width+col];
 U=(unsigned int) inYv12[width*height+width*height/4+tmp];
 V=(unsigned int) inYv12[width*height+tmp];
 // if ((col==200))
 // { 
 // printf("col=%d,row=%d,width=%d,tmp=%d.\n",col,row,width,tmp);
 // printf("width*height+width*height/4+tmp=%d.\n",width*height+width*height/4+tmp);
 // return ;
 // }
 if((idx+col*3+2)> (1200 * widthStep))
 {
 //printf("row * widthStep=%d,idx+col*3+2=%d.\n",1200 * widthStep,idx+col*3+2);
 } 
 outYuv[idx+col*3] = Y;
 outYuv[idx+col*3+1] = U;
 outYuv[idx+col*3+2] = V;
 }
 }
 //printf("col=%d,row=%d.\n",col,row);
 }
 
 
 
 //解码回调 视频为YUV数据(YV12)，音频为PCM数据
 void CALLBACK DecCBFun(long nPort,char * pBuf,long nSize,FRAME_INFO * pFrameInfo, long nReserved1,long nReserved2)
 {
 long lFrameType = pFrameInfo->nType; 
 
 if(lFrameType ==T_YV12)
 {
 #if USECOLOR
 //int start = clock();
 static IplImage* pImgYCrCb = cvCreateImage(cvSize(pFrameInfo->nWidth,pFrameInfo->nHeight), 8, 3);//得到图像的Y分量 
 yv12toYUV(pImgYCrCb->imageData, pBuf, pFrameInfo->nWidth,pFrameInfo->nHeight,pImgYCrCb->widthStep);//得到全部RGB图像
 static IplImage* pImg = cvCreateImage(cvSize(pFrameInfo->nWidth,pFrameInfo->nHeight), 8, 3); 
 cvCvtColor(pImgYCrCb,pImg,CV_YCrCb2RGB); 
 //int end = clock();
 #else
 static IplImage* pImg = cvCreateImage(cvSize(pFrameInfo->nWidth,pFrameInfo->nHeight), 8, 1); 
 memcpy(pImg->imageData,pBuf,pFrameInfo->nWidth*pFrameInfo->nHeight); 
 #endif
 //printf("%d\n",end-start);
 
 Mat frametemp(pImg),frame;
 
 //frametemp.copyTo(frame);
 // cvShowImage("IPCamera",pImg);
 // cvWaitKey(1);
 EnterCriticalSection(&g_cs_frameList);
 g_frameList.push_back(frametemp);
 LeaveCriticalSection(&g_cs_frameList);
 
 #if USECOLOR
 // cvReleaseImage(&pImgYCrCb);
 // cvReleaseImage(&pImg);
 #else
 /*cvReleaseImage(&pImg);*/
 #endif
 //此时是YV12格式的视频数据，保存在pBuf中，可以fwrite(pBuf,nSize,1,Videofile);
 //fwrite(pBuf,nSize,1,fp);
 }
 /***************
 else if (lFrameType ==T_AUDIO16)
 {
 //此时是音频数据，数据保存在pBuf中，可以fwrite(pBuf,nSize,1,Audiofile);
 
 }
 else
 {
 
 }
 *******************/
 
 }
 
 
 ///实时流回调
 void CALLBACK fRealDataCallBack(LONG lRealHandle,DWORD dwDataType,BYTE *pBuffer,DWORD dwBufSize,void *pUser)
 {
 DWORD dRet;
 switch (dwDataType)
 {
 case NET_DVR_SYSHEAD: //系统头
 if (!PlayM4_GetPort(&nPort)) //获取播放库未使用的通道号
 {
 break;
 }
 if(dwBufSize > 0)
 {
 if (!PlayM4_OpenStream(nPort,pBuffer,dwBufSize,1024*1024))
 {
 dRet=PlayM4_GetLastError(nPort);
 break;
 }
 //设置解码回调函数 只解码不显示
 if (!PlayM4_SetDecCallBack(nPort,DecCBFun))
 {
 dRet=PlayM4_GetLastError(nPort);
 break;
 }
 
 //设置解码回调函数 解码且显示
 //if (!PlayM4_SetDecCallBackEx(nPort,DecCBFun,NULL,NULL))
 //{
 // dRet=PlayM4_GetLastError(nPort);
 // break;
 //}
 
 //打开视频解码
 if (!PlayM4_Play(nPort,hWnd))
 {
 dRet=PlayM4_GetLastError(nPort);
 break;
 }
 
 //打开音频解码, 需要码流是复合流
 // if (!PlayM4_PlaySound(nPort))
 // {
 // dRet=PlayM4_GetLastError(nPort);
 // break;
 // } 
 }
 break;
 
 case NET_DVR_STREAMDATA: //码流数据
 if (dwBufSize > 0 && nPort != -1)
 {
 BOOL inData=PlayM4_InputData(nPort,pBuffer,dwBufSize);
 while (!inData)
 {
 Sleep(10);
 inData=PlayM4_InputData(nPort,pBuffer,dwBufSize);
 OutputDebugString(L"PlayM4_InputData failed \n"); 
 }
 }
 break; 
 } 
 }
 
 void CALLBACK g_ExceptionCallBack(DWORD dwType, LONG lUserID, LONG lHandle, void *pUser)
 {
 char tempbuf[256] = {0};
 switch(dwType) 
 {
 case EXCEPTION_RECONNECT: //预览时重连
 printf("----------reconnect--------%d\n", time(NULL));
 break;
 default:
 break;
 }
 }
 
 unsigned readCamera(void *param)
 {
 //---------------------------------------
 // 初始化
 NET_DVR_Init();
 //设置连接时间与重连时间
 NET_DVR_SetConnectTime(2000, 1);
 NET_DVR_SetReconnect(10000, true);
 
 //---------------------------------------
 // 获取控制台窗口句柄
 //HMODULE hKernel32 = GetModuleHandle((LPCWSTR)"kernel32");
 //GetConsoleWindow = (PROCGETCONSOLEWINDOW)GetProcAddress(hKernel32,"GetConsoleWindow");
 
 //---------------------------------------
 // 注册设备
 LONG lUserID;
 NET_DVR_DEVICEINFO_V30 struDeviceInfo;
 lUserID = NET_DVR_Login_V30("192.168.2.64", 8000, "admin", "a123456789", &struDeviceInfo);
 if (lUserID < 0)
 {
 printf("Login error, %d\n", NET_DVR_GetLastError());
 NET_DVR_Cleanup();
 return -1;
 }
 
 //---------------------------------------
 //设置异常消息回调函数
 NET_DVR_SetExceptionCallBack_V30(0, NULL,g_ExceptionCallBack, NULL);
 
 
 //cvNamedWindow("IPCamera");
 //---------------------------------------
 //启动预览并设置回调数据流 
 NET_DVR_CLIENTINFO ClientInfo;
 ClientInfo.lChannel = 1; //Channel number 设备通道号
 ClientInfo.hPlayWnd = NULL; //窗口为空，设备SDK不解码只取流
 ClientInfo.lLinkMode = 0; //Main Stream
 ClientInfo.sMultiCastIP = NULL;
 
 LONG lRealPlayHandle;
 lRealPlayHandle = NET_DVR_RealPlay_V30(lUserID,&ClientInfo,fRealDataCallBack,NULL,TRUE);
 if (lRealPlayHandle<0)
 {
 printf("NET_DVR_RealPlay_V30 failed! Error number: %d\n",NET_DVR_GetLastError());
 return 0;
 }
 
 //cvWaitKey(0);
 Sleep(-1);
 
 //fclose(fp);
 //---------------------------------------
 //关闭预览
 if(!NET_DVR_StopRealPlay(lRealPlayHandle))
 {
 printf("NET_DVR_StopRealPlay error! Error number: %d\n",NET_DVR_GetLastError());
 return 0;
 }
 //注销用户
 NET_DVR_Logout(lUserID);
 NET_DVR_Cleanup();
 
 return 0;
 }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; 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padding: 0px 5px;">165</li><li style="box-sizing: border-box; padding: 0px 5px;">166</li><li style="box-sizing: border-box; padding: 0px 5px;">167</li><li style="box-sizing: border-box; padding: 0px 5px;">168</li><li style="box-sizing: border-box; padding: 0px 5px;">169</li><li style="box-sizing: border-box; padding: 0px 5px;">170</li><li style="box-sizing: border-box; padding: 0px 5px;">171</li><li style="box-sizing: border-box; padding: 0px 5px;">172</li><li style="box-sizing: border-box; padding: 0px 5px;">173</li><li style="box-sizing: border-box; padding: 0px 5px;">174</li><li style="box-sizing: border-box; padding: 0px 5px;">175</li><li style="box-sizing: border-box; padding: 0px 5px;">176</li><li style="box-sizing: border-box; padding: 0px 5px;">177</li><li style="box-sizing: border-box; padding: 0px 5px;">178</li><li style="box-sizing: border-box; padding: 0px 5px;">179</li><li style="box-sizing: border-box; padding: 0px 5px;">180</li><li style="box-sizing: border-box; padding: 0px 5px;">181</li><li style="box-sizing: border-box; padding: 0px 5px;">182</li><li style="box-sizing: border-box; padding: 0px 5px;">183</li><li style="box-sizing: border-box; padding: 0px 5px;">184</li><li style="box-sizing: border-box; padding: 0px 5px;">185</li><li style="box-sizing: border-box; padding: 0px 5px;">186</li><li style="box-sizing: border-box; padding: 0px 5px;">187</li><li style="box-sizing: border-box; padding: 0px 5px;">188</li><li style="box-sizing: border-box; padding: 0px 5px;">189</li><li style="box-sizing: border-box; padding: 0px 5px;">190</li><li style="box-sizing: border-box; padding: 0px 5px;">191</li><li style="box-sizing: border-box; padding: 0px 5px;">192</li><li style="box-sizing: border-box; padding: 0px 5px;">193</li><li style="box-sizing: border-box; padding: 0px 5px;">194</li><li style="box-sizing: border-box; padding: 0px 5px;">195</li><li style="box-sizing: border-box; padding: 0px 5px;">196</li><li style="box-sizing: border-box; padding: 0px 5px;">197</li><li style="box-sizing: border-box; padding: 0px 5px;">198</li><li style="box-sizing: border-box; padding: 0px 5px;">199</li><li style="box-sizing: border-box; padding: 0px 5px;">200</li><li style="box-sizing: border-box; padding: 0px 5px;">201</li><li style="box-sizing: border-box; padding: 0px 5px;">202</li><li style="box-sizing: border-box; padding: 0px 5px;">203</li><li style="box-sizing: border-box; padding: 0px 5px;">204</li><li style="box-sizing: border-box; padding: 0px 5px;">205</li><li style="box-sizing: border-box; padding: 0px 5px;">206</li><li style="box-sizing: border-box; padding: 0px 5px;">207</li><li style="box-sizing: border-box; padding: 0px 5px;">208</li><li style="box-sizing: border-box; padding: 0px 5px;">209</li><li style="box-sizing: border-box; padding: 0px 5px;">210</li><li style="box-sizing: border-box; padding: 0px 5px;">211</li><li style="box-sizing: border-box; padding: 0px 5px;">212</li><li style="box-sizing: border-box; padding: 0px 5px;">213</li><li style="box-sizing: border-box; padding: 0px 5px;">214</li><li style="box-sizing: border-box; padding: 0px 5px;">215</li><li style="box-sizing: border-box; padding: 0px 5px;">216</li><li style="box-sizing: border-box; padding: 0px 5px;">217</li><li style="box-sizing: border-box; padding: 0px 5px;">218</li><li style="box-sizing: border-box; padding: 0px 5px;">219</li><li style="box-sizing: border-box; padding: 0px 5px;">220</li><li style="box-sizing: border-box; padding: 0px 5px;">221</li><li style="box-sizing: border-box; padding: 0px 5px;">222</li><li style="box-sizing: border-box; padding: 0px 5px;">223</li><li style="box-sizing: border-box; padding: 0px 5px;">224</li><li style="box-sizing: border-box; padding: 0px 5px;">225</li><li style="box-sizing: border-box; padding: 0px 5px;">226</li><li style="box-sizing: border-box; padding: 0px 5px;">227</li><li style="box-sizing: border-box; padding: 0px 5px;">228</li><li style="box-sizing: border-box; padding: 0px 5px;">229</li><li style="box-sizing: border-box; padding: 0px 5px;">230</li><li style="box-sizing: border-box; padding: 0px 5px;">231</li><li style="box-sizing: border-box; padding: 0px 5px;">232</li><li style="box-sizing: border-box; padding: 0px 5px;">233</li><li style="box-sizing: border-box; padding: 0px 5px;">234</li><li style="box-sizing: border-box; padding: 0px 5px;">235</li><li style="box-sizing: border-box; padding: 0px 5px;">236</li><li style="box-sizing: border-box; padding: 0px 5px;">237</li><li style="box-sizing: border-box; padding: 0px 5px;">238</li><li style="box-sizing: border-box; padding: 0px 5px;">239</li><li style="box-sizing: border-box; padding: 0px 5px;">240</li><li style="box-sizing: border-box; padding: 0px 5px;">241</li><li style="box-sizing: border-box; padding: 0px 5px;">242</li><li style="box-sizing: border-box; padding: 0px 5px;">243</li><li style="box-sizing: border-box; padding: 0px 5px;">244</li><li style="box-sizing: border-box; padding: 0px 5px;">245</li><li style="box-sizing: border-box; padding: 0px 5px;">246</li><li style="box-sizing: border-box; padding: 0px 5px;">247</li><li style="box-sizing: border-box; padding: 0px 5px;">248</li><li style="box-sizing: border-box; padding: 0px 5px;">249</li><li style="box-sizing: border-box; padding: 0px 5px;">250</li><li style="box-sizing: border-box; padding: 0px 5px;">251</li><li style="box-sizing: border-box; padding: 0px 5px;">252</li><li style="box-sizing: border-box; padding: 0px 5px;">253</li><li style="box-sizing: border-box; padding: 0px 5px;">254</li><li style="box-sizing: border-box; padding: 0px 5px;">255</li><li style="box-sizing: border-box; padding: 0px 5px;">256</li><li style="box-sizing: border-box; padding: 0px 5px;">257</li><li style="box-sizing: border-box; padding: 0px 5px;">258</li><li style="box-sizing: border-box; padding: 0px 5px;">259</li><li style="box-sizing: border-box; padding: 0px 5px;">260</li><li style="box-sizing: border-box; padding: 0px 5px;">261</li><li style="box-sizing: border-box; padding: 0px 5px;">262</li><li style="box-sizing: border-box; padding: 0px 5px;">263</li><li style="box-sizing: border-box; padding: 0px 5px;">264</li><li style="box-sizing: border-box; padding: 0px 5px;">265</li><li style="box-sizing: border-box; padding: 0px 5px;">266</li><li style="box-sizing: border-box; padding: 0px 5px;">267</li><li style="box-sizing: border-box; padding: 0px 5px;">268</li><li style="box-sizing: border-box; padding: 0px 5px;">269</li></ul><div class="save_code tracking-ad" data-mod="popu_249" style="box-sizing: border-box; position: absolute; height: 60px; right: 30px; top: 5px; color: rgb(255, 255, 255); cursor: pointer; z-index: 2;"><a target=_blank target="_blank" style="color: rgb(202, 0, 0); box-sizing: border-box;"><img src="http://static.blog.csdn.net/images/save_snippets.png" style="border: none; box-sizing: border-box; max-width: 100%;" alt="" /></a></div><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li><li style="box-sizing: border-box; padding: 0px 5px;">66</li><li style="box-sizing: border-box; padding: 0px 5px;">67</li><li style="box-sizing: border-box; padding: 0px 5px;">68</li><li style="box-sizing: border-box; padding: 0px 5px;">69</li><li style="box-sizing: border-box; padding: 0px 5px;">70</li><li style="box-sizing: border-box; padding: 0px 5px;">71</li><li style="box-sizing: border-box; padding: 0px 5px;">72</li><li style="box-sizing: border-box; padding: 0px 5px;">73</li><li style="box-sizing: border-box; padding: 0px 5px;">74</li><li style="box-sizing: border-box; padding: 0px 5px;">75</li><li style="box-sizing: border-box; padding: 0px 5px;">76</li><li style="box-sizing: border-box; padding: 0px 5px;">77</li><li style="box-sizing: border-box; padding: 0px 5px;">78</li><li style="box-sizing: border-box; padding: 0px 5px;">79</li><li style="box-sizing: border-box; padding: 0px 5px;">80</li><li style="box-sizing: border-box; padding: 0px 5px;">81</li><li style="box-sizing: border-box; padding: 0px 5px;">82</li><li style="box-sizing: border-box; padding: 0px 5px;">83</li><li style="box-sizing: border-box; padding: 0px 5px;">84</li><li style="box-sizing: border-box; padding: 0px 5px;">85</li><li style="box-sizing: border-box; padding: 0px 5px;">86</li><li style="box-sizing: border-box; padding: 0px 5px;">87</li><li style="box-sizing: border-box; padding: 0px 5px;">88</li><li style="box-sizing: border-box; padding: 0px 5px;">89</li><li style="box-sizing: border-box; padding: 0px 5px;">90</li><li style="box-sizing: border-box; padding: 0px 5px;">91</li><li style="box-sizing: border-box; padding: 0px 5px;">92</li><li style="box-sizing: border-box; padding: 0px 5px;">93</li><li style="box-sizing: border-box; padding: 0px 5px;">94</li><li style="box-sizing: border-box; padding: 0px 5px;">95</li><li style="box-sizing: border-box; padding: 0px 5px;">96</li><li style="box-sizing: border-box; padding: 0px 5px;">97</li><li style="box-sizing: border-box; padding: 0px 5px;">98</li><li style="box-sizing: border-box; padding: 0px 5px;">99</li><li style="box-sizing: border-box; padding: 0px 5px;">100</li><li style="box-sizing: border-box; padding: 0px 5px;">101</li><li style="box-sizing: border-box; padding: 0px 5px;">102</li><li style="box-sizing: border-box; padding: 0px 5px;">103</li><li style="box-sizing: border-box; padding: 0px 5px;">104</li><li style="box-sizing: border-box; padding: 0px 5px;">105</li><li style="box-sizing: border-box; padding: 0px 5px;">106</li><li style="box-sizing: border-box; padding: 0px 5px;">107</li><li style="box-sizing: border-box; padding: 0px 5px;">108</li><li style="box-sizing: border-box; padding: 0px 5px;">109</li><li style="box-sizing: border-box; padding: 0px 5px;">110</li><li style="box-sizing: border-box; padding: 0px 5px;">111</li><li style="box-sizing: border-box; padding: 0px 5px;">112</li><li style="box-sizing: border-box; padding: 0px 5px;">113</li><li style="box-sizing: border-box; padding: 0px 5px;">114</li><li style="box-sizing: border-box; padding: 0px 5px;">115</li><li style="box-sizing: border-box; padding: 0px 5px;">116</li><li style="box-sizing: border-box; padding: 0px 5px;">117</li><li style="box-sizing: border-box; padding: 0px 5px;">118</li><li style="box-sizing: border-box; padding: 0px 5px;">119</li><li style="box-sizing: border-box; padding: 0px 5px;">120</li><li style="box-sizing: border-box; padding: 0px 5px;">121</li><li style="box-sizing: border-box; padding: 0px 5px;">122</li><li style="box-sizing: border-box; padding: 0px 5px;">123</li><li style="box-sizing: border-box; padding: 0px 5px;">124</li><li style="box-sizing: border-box; padding: 0px 5px;">125</li><li style="box-sizing: border-box; padding: 0px 5px;">126</li><li style="box-sizing: border-box; padding: 0px 5px;">127</li><li style="box-sizing: border-box; padding: 0px 5px;">128</li><li style="box-sizing: border-box; padding: 0px 5px;">129</li><li style="box-sizing: border-box; padding: 0px 5px;">130</li><li style="box-sizing: border-box; padding: 0px 5px;">131</li><li style="box-sizing: border-box; padding: 0px 5px;">132</li><li style="box-sizing: border-box; padding: 0px 5px;">133</li><li style="box-sizing: border-box; padding: 0px 5px;">134</li><li style="box-sizing: border-box; padding: 0px 5px;">135</li><li style="box-sizing: border-box; padding: 0px 5px;">136</li><li style="box-sizing: border-box; padding: 0px 5px;">137</li><li style="box-sizing: border-box; padding: 0px 5px;">138</li><li style="box-sizing: border-box; padding: 0px 5px;">139</li><li style="box-sizing: border-box; padding: 0px 5px;">140</li><li style="box-sizing: border-box; padding: 0px 5px;">141</li><li style="box-sizing: border-box; padding: 0px 5px;">142</li><li style="box-sizing: border-box; padding: 0px 5px;">143</li><li style="box-sizing: border-box; padding: 0px 5px;">144</li><li style="box-sizing: border-box; padding: 0px 5px;">145</li><li style="box-sizing: border-box; padding: 0px 5px;">146</li><li style="box-sizing: border-box; padding: 0px 5px;">147</li><li style="box-sizing: border-box; padding: 0px 5px;">148</li><li style="box-sizing: border-box; padding: 0px 5px;">149</li><li style="box-sizing: border-box; padding: 0px 5px;">150</li><li style="box-sizing: border-box; padding: 0px 5px;">151</li><li style="box-sizing: border-box; padding: 0px 5px;">152</li><li style="box-sizing: border-box; padding: 0px 5px;">153</li><li style="box-sizing: border-box; padding: 0px 5px;">154</li><li style="box-sizing: border-box; padding: 0px 5px;">155</li><li style="box-sizing: border-box; padding: 0px 5px;">156</li><li style="box-sizing: border-box; padding: 0px 5px;">157</li><li style="box-sizing: border-box; padding: 0px 5px;">158</li><li style="box-sizing: border-box; padding: 0px 5px;">159</li><li style="box-sizing: border-box; padding: 0px 5px;">160</li><li style="box-sizing: border-box; padding: 0px 5px;">161</li><li style="box-sizing: border-box; padding: 0px 5px;">162</li><li style="box-sizing: border-box; padding: 0px 5px;">163</li><li style="box-sizing: border-box; padding: 0px 5px;">164</li><li style="box-sizing: border-box; padding: 0px 5px;">165</li><li style="box-sizing: border-box; padding: 0px 5px;">166</li><li style="box-sizing: border-box; padding: 0px 5px;">167</li><li style="box-sizing: border-box; padding: 0px 5px;">168</li><li style="box-sizing: border-box; padding: 0px 5px;">169</li><li style="box-sizing: border-box; padding: 0px 5px;">170</li><li style="box-sizing: border-box; padding: 0px 5px;">171</li><li style="box-sizing: border-box; padding: 0px 5px;">172</li><li style="box-sizing: border-box; padding: 0px 5px;">173</li><li style="box-sizing: border-box; padding: 0px 5px;">174</li><li style="box-sizing: border-box; padding: 0px 5px;">175</li><li style="box-sizing: border-box; padding: 0px 5px;">176</li><li style="box-sizing: border-box; padding: 0px 5px;">177</li><li style="box-sizing: border-box; padding: 0px 5px;">178</li><li style="box-sizing: border-box; padding: 0px 5px;">179</li><li style="box-sizing: border-box; padding: 0px 5px;">180</li><li style="box-sizing: border-box; padding: 0px 5px;">181</li><li style="box-sizing: border-box; padding: 0px 5px;">182</li><li style="box-sizing: border-box; padding: 0px 5px;">183</li><li style="box-sizing: border-box; padding: 0px 5px;">184</li><li style="box-sizing: border-box; padding: 0px 5px;">185</li><li style="box-sizing: border-box; padding: 0px 5px;">186</li><li style="box-sizing: border-box; padding: 0px 5px;">187</li><li style="box-sizing: border-box; padding: 0px 5px;">188</li><li style="box-sizing: border-box; padding: 0px 5px;">189</li><li style="box-sizing: border-box; padding: 0px 5px;">190</li><li style="box-sizing: border-box; padding: 0px 5px;">191</li><li style="box-sizing: border-box; padding: 0px 5px;">192</li><li style="box-sizing: border-box; padding: 0px 5px;">193</li><li style="box-sizing: border-box; padding: 0px 5px;">194</li><li style="box-sizing: border-box; padding: 0px 5px;">195</li><li style="box-sizing: border-box; padding: 0px 5px;">196</li><li style="box-sizing: border-box; padding: 0px 5px;">197</li><li style="box-sizing: border-box; padding: 0px 5px;">198</li><li style="box-sizing: border-box; padding: 0px 5px;">199</li><li style="box-sizing: border-box; padding: 0px 5px;">200</li><li style="box-sizing: border-box; padding: 0px 5px;">201</li><li style="box-sizing: border-box; padding: 0px 5px;">202</li><li style="box-sizing: border-box; padding: 0px 5px;">203</li><li style="box-sizing: border-box; padding: 0px 5px;">204</li><li style="box-sizing: border-box; padding: 0px 5px;">205</li><li style="box-sizing: border-box; padding: 0px 5px;">206</li><li style="box-sizing: border-box; padding: 0px 5px;">207</li><li style="box-sizing: border-box; padding: 0px 5px;">208</li><li style="box-sizing: border-box; padding: 0px 5px;">209</li><li style="box-sizing: border-box; padding: 0px 5px;">210</li><li style="box-sizing: border-box; padding: 0px 5px;">211</li><li style="box-sizing: border-box; padding: 0px 5px;">212</li><li style="box-sizing: border-box; padding: 0px 5px;">213</li><li style="box-sizing: border-box; padding: 0px 5px;">214</li><li style="box-sizing: border-box; padding: 0px 5px;">215</li><li style="box-sizing: border-box; padding: 0px 5px;">216</li><li style="box-sizing: border-box; padding: 0px 5px;">217</li><li style="box-sizing: border-box; padding: 0px 5px;">218</li><li style="box-sizing: border-box; padding: 0px 5px;">219</li><li style="box-sizing: border-box; padding: 0px 5px;">220</li><li style="box-sizing: border-box; padding: 0px 5px;">221</li><li style="box-sizing: border-box; padding: 0px 5px;">222</li><li style="box-sizing: border-box; padding: 0px 5px;">223</li><li style="box-sizing: border-box; padding: 0px 5px;">224</li><li style="box-sizing: border-box; padding: 0px 5px;">225</li><li style="box-sizing: border-box; padding: 0px 5px;">226</li><li style="box-sizing: border-box; padding: 0px 5px;">227</li><li style="box-sizing: border-box; padding: 0px 5px;">228</li><li style="box-sizing: border-box; padding: 0px 5px;">229</li><li style="box-sizing: border-box; padding: 0px 5px;">230</li><li style="box-sizing: border-box; padding: 0px 5px;">231</li><li style="box-sizing: border-box; padding: 0px 5px;">232</li><li style="box-sizing: border-box; padding: 0px 5px;">233</li><li style="box-sizing: border-box; padding: 0px 5px;">234</li><li style="box-sizing: border-box; padding: 0px 5px;">235</li><li style="box-sizing: border-box; padding: 0px 5px;">236</li><li style="box-sizing: border-box; padding: 0px 5px;">237</li><li style="box-sizing: border-box; padding: 0px 5px;">238</li><li style="box-sizing: border-box; padding: 0px 5px;">239</li><li style="box-sizing: border-box; padding: 0px 5px;">240</li><li style="box-sizing: border-box; padding: 0px 5px;">241</li><li style="box-sizing: border-box; padding: 0px 5px;">242</li><li style="box-sizing: border-box; padding: 0px 5px;">243</li><li style="box-sizing: border-box; padding: 0px 5px;">244</li><li style="box-sizing: border-box; padding: 0px 5px;">245</li><li style="box-sizing: border-box; padding: 0px 5px;">246</li><li style="box-sizing: border-box; padding: 0px 5px;">247</li><li style="box-sizing: border-box; padding: 0px 5px;">248</li><li style="box-sizing: border-box; padding: 0px 5px;">249</li><li style="box-sizing: border-box; padding: 0px 5px;">250</li><li style="box-sizing: border-box; padding: 0px 5px;">251</li><li style="box-sizing: border-box; padding: 0px 5px;">252</li><li style="box-sizing: border-box; padding: 0px 5px;">253</li><li style="box-sizing: border-box; padding: 0px 5px;">254</li><li style="box-sizing: border-box; padding: 0px 5px;">255</li><li style="box-sizing: border-box; padding: 0px 5px;">256</li><li style="box-sizing: border-box; padding: 0px 5px;">257</li><li style="box-sizing: border-box; padding: 0px 5px;">258</li><li style="box-sizing: border-box; padding: 0px 5px;">259</li><li style="box-sizing: border-box; padding: 0px 5px;">260</li><li style="box-sizing: border-box; padding: 0px 5px;">261</li><li style="box-sizing: border-box; padding: 0px 5px;">262</li><li style="box-sizing: border-box; padding: 0px 5px;">263</li><li style="box-sizing: border-box; padding: 0px 5px;">264</li><li style="box-sizing: border-box; padding: 0px 5px;">265</li><li style="box-sizing: border-box; padding: 0px 5px;">266</li><li style="box-sizing: border-box; padding: 0px 5px;">267</li><li style="box-sizing: border-box; padding: 0px 5px;">268</li><li style="box-sizing: border-box; padding: 0px 5px;">269</li></ul>

其中最终得到的帧保存在g\_frameList.push\_back(frametemp);中。前后设置了对应的锁，用来对该帧序列的读写进行保护。这一部分内容是要自己完成的。即定义变量：

CRITICAL\_SECTION g\_cs\_frameList;  
std::list<Mat> g\_frameList;

主函数中的调用代码，先建立线程，调用上述读摄像头的函数的回调，并把读到的帧序列保存在g\_frameList中，然后再读取该序列，保存到Mat里即可：

<code class="language-c++ hljs r has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">int main()
 { 
 HANDLE hThread;
 unsigned threadID;
 Mat frame1;
 
 InitializeCriticalSection(&g_cs_frameList);
 hThread = (HANDLE)_beginthreadex( NULL, 0, &readCamera, NULL, 0, &threadID );
 ...
 EnterCriticalSection(&g_cs_frameList);
 if(g_frameList.size())
 {
 list<Mat>::iterator it;
 it = g_frameList.end();
 it--;
 Mat dbgframe = (*(it));
 //imshow("frame from camera",dbgframe);
 //dbgframe.copyTo(frame1);
 //dbgframe.release();
 (*g_frameList.begin()).copyTo(frame[i]);
 frame1 = dbgframe;
 g_frameList.pop_front();
 }
 g_frameList.clear(); // 丢掉旧的帧
 LeaveCriticalSection(&g_cs_frameList);
 ...
 
 return 0;
 }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li></ul>

## 博乐点评  ![man.png][]一共有 2位博乐进行推荐 ##

*  [丁国华][Link 6]  ![clock.png][]2016-05-22 21:06:43 ![arrow.png][]
 *  博文介绍了 OpenCV+海康威视摄像头的实时读取 ，很详细的讲解，深入浅出，感谢博主的分享，期待后续博文，加油！

[![1_u010850027.jpg][]][Link 6]

*  [shiter][]  ![clock.png][]2016-01-06 21:58:29 ![arrow.png][]
 *  受益匪浅，作者步骤详细，希望代码能多加点注释就更好了，想请问一下，经常看到有yuv的转换，请问现在摄像头拍出来都是什么格式的，怎么还要转换？

[![1_wangyaninglm.jpg][]][shiter]

![more_bg.png][]

顶

踩

*  上一篇[OpenCV基础优化之使用drawContours][OpenCV_drawContours]

[OpenCV]: http://blog.csdn.net/lonelyrains/article/details/50350052
[bole_recommd_logo.png]: /images/20220715/d4294d701bc24814af4b7ee3fcc7da06.png
[opencv]: http://www.csdn.net/tag/opencv
[vs2012]: http://www.csdn.net/tag/vs2012
[Link 1]: http://www.csdn.net/tag/%e6%b5%b7%e5%ba%b7%e5%a8%81%e8%a7%86
[Link 2]: http://blog.csdn.net/lonelyrains/article/details/50350052#comments
[Link 3]: http://blog.csdn.net/lonelyrains/article/details/50350052#report
[category_icon.jpg]: /images/20220715/f962e55349c140df966b8d464f08bedf.png
[arrow_triangle_20_down.jpg]: /images/20220715/cc496be2d0484a02a39241c49d0e967d.png
[Link 4]: http://blog.csdn.net/lonelyrains/article/details/50350052#
[lonelyrains]: http://blog.csdn.net/lonelyrains
[Link 5]: http://lib.csdn.net/base/2
[opencv2.4.8]: http://opencv.org/opencv-2-4-8.html
[hkvision5114-x64]: http://www.hikvision.com/cn/download_more_570.html
[SADP]: http://www.downcc.com/soft/24877.html
[20151218104845677]: /images/20220715/56d51dcbcbf941a6b018fdec3738cd90.png
[20151218104858137]: /images/20220715/1757ad4b508d41859aefb76101e13f87.png
[20151218105019819]: /images/20220715/86eaa5992a09430baf7b375576dddc3b.png
[20151218105153166]: /images/20220715/53c33186fb9e4f03a2d89540b3b9f625.png
[20151218105130405]: /images/20220715/a3bec322b75e4fd9976e8d034705677c.png
[20151218105139779]: /images/20220715/af3e34bd0fd84eb398fde85972b5691c.png
[20151218105708651]: /images/20220715/20aba9ba25f849098b12ea906836145d.png
[20151218105724334]: /images/20220715/32b4294d44d9461c98f8a868ea84c8af.png
[20151218105733317]: /images/20220715/cbaea14a97624555987ce4ca6e32b658.png
[20151218105920856]: /images/20220715/92a0240d0da14d42ba9f2c523a73354d.png
[20151218110002547]: /images/20220715/f75dd30a0aa4449a89d859f85380f439.png
[20151218110016581]: /images/20220715/a652ec20364943b880850a78f380a588.png
[20151218110027645]: /images/20220715/3c9b076e65234c30bdee56cd13e9f5dd.png
[man.png]: /images/20220715/d0648a22f2d249289ef89c29ba2a4e88.png
[Link 6]: http://blog.csdn.net/u010850027
[clock.png]: http://static.blog.csdn.net/images/clock.png
[arrow.png]: /images/20220715/08f28d27f83b481ead56a32a82d044f8.png
[1_u010850027.jpg]: /images/20220715/cf0ddae1b467452f9346af63eeb7ebbc.png
[shiter]: http://blog.csdn.net/wangyaninglm
[1_wangyaninglm.jpg]: /images/20220715/22f56ef02f9f498eb7dd47923fe0d171.png
[more_bg.png]: /images/20220715/c3978cc68d7b437b92d5a6b9bf5dcffe.png
[OpenCV_drawContours]: http://blog.csdn.net/lonelyrains/article/details/50215549