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お題は不問！Qiita Engineer Festa 2024で記事投稿！
Qiita Engineer Festa20242024年7月17日まで開催中！
@akinami

【OpenCV】画像のy軸の方向は逆

Last updated at Posted at 2024-06-28

お疲れ様です。秋並です。

「一般的な2次元座標系1」と違い、「画像の座標系」はy軸の方向が逆向きになっています。

また、その関係で、原点位置が左上になっています。

image.png

OpenCVとかで初めて画像処理を扱ったときにありがちなミスなのでご注意ください。

  1. ここでいう「一般的な2次元座標系」とは、図の左側に示すような座標系を指します ↩

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