2020-06-16 cv2.error: OpenCV(4.2.0) C:\projects\opencv-python\opencv\modules\imgcodecs\src\loadsave.cpp:661: error: (-2:Unspecified error) could not find a writer for the specified extension in function 'cv::imwrite_' https://qiita.com/isso_w/items/0a99153ed521c4f36dca cv2はパスの中に日本語が入ってると読み込めない