如何在OpenCV中获取图像宽度和高度？

Question

我想得到图像的宽度和高度,我怎么能在OpenCV中做到这一点？

例如:

Mat src = imread("path_to_image");
cout << src.width;

是对的吗？

Answer 1

你可以使用rows和cols:

cout << "Width : " << src.cols << endl;
cout << "Height: " << src.rows << endl;

或者size():

cout << "Width : " << src.size().width << endl;
cout << "Height: " << src.size().height << endl;

Answer 2

另外对于python中的openCV,你可以这样做:

img = cv2.imread('myImage.jpg')
height, width, channels = img.shape