如何在OpenCV中获取图像宽度和高度？ [重复]

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Matrix OpenCV 5的大小答案

I want to get image width and height, how can I do that in OpenCV?

我想得到图像的宽度和高度,我怎么能在OpenCV中做到这一点?

For example:

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

Is that right?

是对的吗?

2 个解决方案

You can use rows and cols:

您可以使用行和列:

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

or size():

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

Also for openCV in python you can do:

对于python中的openCV,你可以这样做:

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

You can use rows and cols:

您可以使用行和列:

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

or size():

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

Also for openCV in python you can do:

对于python中的openCV,你可以这样做:

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