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March 19, 2018 20:03
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color space conversion from RGB to CIELAB in PIL/Pillow (Japanese article) ref: http://qiita.com/mrkn/items/670e1622d41d2dcd26b4
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| from PIL import Image, ImageCms | |
| im = Image.open(image_path) | |
| if im.mode != "RGB": | |
| im = im.convert("RGB") | |
| srgb_profile = ImageCms.createProfile("sRGB") | |
| lab_profile = ImageCms.createProfile("LAB") | |
| rgb2lab_transform = ImageCms.buildTransformFromOpenProfiles(srgb_profile, lab_profile, "RGB", "LAB") | |
| lab_im = ImageCms.applyTransform(im, rgb2lab_transform) |
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