opencv - Croppint an empty image. Error or just another empty image?

Question

Following this question in which the general answer presents this code

// Read img
cv::Mat img = cv::imread("imgFileName");
cv::Mat croppedImg;

// This line picks out the rectangle from the image
// and copies to a new Mat
img(cv::Rect(xMin,yMin,xMax-xMin,yMax-yMin)).copyTo(croppedImg);

what happens if the original img is empty? Does it thow an error? or just generate another empty image?

Answer 1

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