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ImageMagick7 negate(nega/posi-trans) invert transparency as default

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ImageMagick7 negate(nega/posi-trans) invert transparency as default (original text in japanese) https://qiita.com/yoya/items/9301c447093354d92185 When using the -negate option with ImageMagick7, images may disappear sometimes . This is the intended behavior, not a bug. Actual operation There is no problem if it is an RGB image without transparency. % convert rose: rose.png % identify -verbose rose.png | grep Type Type: TrueColor % convert rose.png -negate rose-negate.png rose.png rose-negate.png If it is an RGBA Read More...

ImageMagick7 negate(nega/posi-trans) invert transparency as default

published on
ImageMagick7 negate(nega/posi-trans) invert transparency as default (original text in japanese) https://qiita.com/yoya/items/9301c447093354d92185 When using the -negate option with ImageMagick7, images may disappear sometimes . This is the intended behavior, not a bug. Actual operation There is no problem if it is an RGB image without transparency. % convert rose: rose.png % identify -verbose rose.png | grep Type Type: TrueColor % convert rose.png -negate rose-negate.png rose.png rose-negate.png If it is an RGBA Read More...

色空間 (Color Spaces) FAQ

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色空間 (Color Spaces) FAQ http://www.ilkeratalay.com/colorspacesfaq.php Original document can be reached at: http://www.rmbwoc.com/vidpage/color_faq.html. Document background is normalized to ‘White’ so that it’s easier to read now :) 元のドキュメントは http://www.rmbwoc.com/vidpage/color_faq.html から辿れます。 ドキュメントの背景を白ベースにしている今は読み易い Read More...

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