请问出现这个是为什么呢？image = cv2.resize(image, (int(28*ratio), int(28*ratio))) cv2.error: OpenCV(4.1.1) C:\projects\opencv-python\opencv\modules\imgproc\src\resize.cpp:3720: error: (-215:Assertion failed) !ssize.empty() in function 'cv::resize'

[litianzhu123]

[youchangxin]

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