转载：Wrong shapes for given matrices in OPENCV

问题跟原因之间看起来没有什么直接的联系，不过勒， OpenCV Error: Bad argument (Wrong shapes for given matrices. Was size(src) = (1,921600),

size(W) = (307200,6).) in subspaceProject, 这种错误，一般是因为妳所调用的那个 opencv api只支持灰度图，而妳却载入了一张彩色图而造成的。

http://stackoverflow.com/questions/12032658/wrong-shapes-for-given-matrices-in-opencv

亮点：

Although you don't provide enough code to verify, I can infer the problem from the given number of elements. Your test matrix is 921600 = 3 * 307200 ... So I guess your input matrix is not a grayscale matrix, but still is in BGR representation.

You should use cv::cvtColor to convert the matrix to grayscale, before resizing it:

• •. http://docs.opencv.org/modules/imgproc/doc/miscellaneous_transformations.html

未知美人