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answer OpenCV(3.4.11) Error: Assertion failed (_img.rows * _img.cols == vecSize) in CvCascadeImageReader::PosReader::get

related OpenCV(3.4.11) Error: Assertion failed (_img.rows * _img.cols == vecSize) in CvCascadeImageReader::PosReader::get

related OpenCV(3.4.11) Error: Assertion failed (_img.rows * _img.cols == vecSize) in CvCascadeImageReader::PosReader::get

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th2=cv2.adaptiveThreshold(img, 255 ,cv2.ADAPTIVE_THRESH_MEAN_C, cv2.THRESH_BINARY, 11 # no of block size , 2 #c)

(-215:Assertion failed) _img.size().height <= _templ.size().height && _img.size().width <= _templ.size().width in function 'cv::matchTemplate

opencv(4.1.2) /io/opencv/modules/imgproc/src/resize.cpp:3720: error: (-215:assertion failed) !ssize.empty() in function 'resize'

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OpenCV(4.5.4-dev) D:\a\opencv-python\opencv-python\opencv\modules\imgproc\src\resize.cpp:4051: error: (-215:Assertion failed) !ssize.empty() in function 'cv::resize'

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