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C API
起因
做生物图象处理, 先用python, 速度实在太慢, 用c 选图像库, ImageMagic看上去不错. 可惜, 文档实在太简洁了, 好在open source, 看着源码摸索着走.
开端
ImageMagic的C API有两种, MagickWand 和 MagickCore , Manual两种API都有一个例子程序. MagickCore是一个低阶的API, 但是更灵活, 将仔细讨论. 读取图像, 计算RGB分量的联合分布R-G , G-B, B-R: