一. 实验内容
用OpenCV对图片进行边缘检测。
二. 实验代码
//边缘检测
class Task17 {
public:void deal() {Mat src_img = imread("img\\1.jpg");imshow("边缘检测[原图]", src_img);Mat gray_img;cvtColor(src_img, gray_img, COLOR_BGR2GRAY);Mat out1;blur(gray_img, out1, Size(11, 11));// imshow("滤波效果", out1);Canny(out1, out1, 50, 60, 3);imshow("Canny边缘检测", out1);Mat grad_x, grad_y;Mat abs_grad_x, abs_grad_y;Sobel(gray_img, grad_x, CV_16S, 1, 0, 3, 1, 1);convertScaleAbs(grad_x, abs_grad_x);// imshow("Sobel边缘检测x方向", abs_grad_x);Sobel(gray_img, grad_y, CV_16S, 0, 1, 3, 1, 1);convertScaleAbs(grad_y, abs_grad_y);// imshow("Sobel边缘检测y方向", abs_grad_y);Mat out2;addWeighted(abs_grad_x, 0.5, abs_grad_y, 0.5, 0, out2);imshow("Sobel边缘检测", out2);Mat blur_img, lap_img, out3;GaussianBlur(gray_img, blur_img, Size(3, 3), 0, 0);Laplacian(blur_img, lap_img, CV_16S, 3, 1, 0);convertScaleAbs(lap_img, out3);imshow("Laplacian边缘检测", out3);Scharr(gray_img, grad_x, CV_16S, 1, 0, 1, 0);convertScaleAbs(grad_x, abs_grad_x);// imshow("Scharr边缘检测x方向", abs_grad_x);Scharr(gray_img, grad_y, CV_16S, 0, 1, 1, 0);convertScaleAbs(grad_y, abs_grad_y);// imshow("Scharr边缘检测y方向", abs_grad_y);Mat out4;addWeighted(abs_grad_x, 0.5, abs_grad_y, 0.5, 0, out4);imshow("Scharr滤波器", out4);waitKey(0);}
};
