グレースケールやαチャンネル付きの画像でも変換できるように関数化しました。 Pillow → OpenCV import numpy as np import cv2 def pil2cv(image): ''' PIL型 -> OpenCV型 ''' new_image = np.array(image, dtype=np.uint8) if new_image.ndim == 2: # モノクロ pass elif new_image.shape[2] == 3: # カラー new_image = cv2.cvtColor(new_image, cv2.COLOR_RGB2BGR) elif new_image.shape[2] == 4: # 透過 new_image = cv2.cvtColor(new_image, cv2.COLOR_RGBA2BGRA) return new
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