opencv学习笔记6 角点检测

た入场券 2023-06-04 03:54 11阅读 0赞

## 角点检测 ##

### 1.harris焦点检测 ###

void cornerHarris(InputArray src,OutputArray dst, int blockSize, int ksize, double k, intborderType=BORDER\_DEFAULT )

![1615707-20190912133231844-2066495656.png][]

1     Mat src = imread("E:/house.png", 0);
    2     Mat harris,harris_bin;
    3     cornerHarris(src, harris, 2, 3, 0.01);
    4     threshold(harris, harris_bin, 0.00001, 255, THRESH_BINARY);
    5     imshow("src", src);
    6     imshow("角点检测后的二值效果图", harris_bin);
    7     waitKey();

![1615707-20190912135457668-1560358310.png][]

###  2.阈值（用于生成二值图） ###

double threshold(InputArray src,OutputArray dst, double thresh, double maxval, int type)

![1615707-20190912133245289-50380898.png][]

![1615707-20190912134150270-935581572.png][]

1 #include<opencv.hpp>
     2 #include<vector>
     3 using namespace std;
     4 using namespace cv;
     5 int main()
     6 {
     7     Mat src = imread("E:/test.jpg",0);
     8     imshow("src", src);
     9     Mat thresh_bin;
    10     threshold(src, thresh_bin, 127, 255, THRESH_BINARY); //阈值127
    11     imshow("thresh_bin", thresh_bin);
    12     Mat thresh_bin_inv;
    13     threshold(src, thresh_bin_inv, 127, 255, THRESH_BINARY_INV);
    14     imshow("thresh_bin_inv", thresh_bin_inv);
    15     waitKey();
    16     return 0;
    17 }

![1615707-20190912134117696-386133811.png][]

转载于:https://www.cnblogs.com/sclu/p/11511925.html

[1615707-20190912133231844-2066495656.png]: /images/20230601/06f1269fd0014cddb810878d5f0f7c31.png
[1615707-20190912135457668-1560358310.png]: /images/20230601/8fdd1286d3584401baf6942299691959.png
[1615707-20190912133245289-50380898.png]: /images/20230601/4926e97c25314b37b3f22df4faa93ed9.png
[1615707-20190912134150270-935581572.png]: /images/20230601/2aa9c80d08f34190b21f9378ad139fc2.png
[1615707-20190912134117696-386133811.png]: /images/20230601/c9ebd82350144cdaa7696758bb461e80.png