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24位真彩色BMP转256色灰度BMP的几个方法

  • March 25, 2005 – 12:32 pm
  • Posted in Uncategorized
  • Tagged

有几个公式，不过我的眼睛是感觉不到什么区别咯。

  • Y = 0.3R + 0.59B + 0.11G
  • Y=0.212671*R + 0.715160*G + 0.072169*B
  • Y=(max(R,G,B) + min(R,G,B)) / 2

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