GraphicsMagick(http://www.graphicsmagick.org/)被称为图片处理的瑞士军刀，它的功能包括：
Convert an image from one format to another (e.g. TIFF to JPEG)
Resize, rotate, sharpen, color reduce, or add special effects to an image
Create a montage of i...
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GraphicsMagick(http://www.graphicsmagick.org/)被称为图片处理的瑞士军刀，它的功能包括：
Convert an image from one format to another (e.g. TIFF to J...