(No version information available, might only be in SVN)
Imagick::remapImage — Remaps image colors
   Replaces colors an image with those defined by replacement. The colors
   are replaced with the closest possible color. 此方法在Imagick基于ImageMagick 6.4.5以上版本编译时可用。
  
replacement
     An Imagick object containing the replacement colors
DITHER
     Refer to this list of dither method constants
   成功时返回 TRUE .
  
错误时抛出 ImagickException .