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re-imagined/bmp图片大小计算.md

Last active April 5, 2016 05:13
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一张1024×640分辨率的图片，假定每个像素用16位色彩表示，用位图文件（bitmap）格式存储，则这张图片文件需要占用多大的存储空间
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bmp图片大小计算.md

###图片像素×位深度÷8＝位图大小（字节） ####例如 16位色彩 #####每个像素占16bit #####1024 * 640 * 16 = 10485760 bit #####10485760 / 8 = 1310720 byte #####1310720 / 1024 = 1280 kb

#####注： #####1位，（单色）；4位：（16色）；8位（256色）； #####16（64K色，高彩色）；24（16M色，真彩色）；32（4096M色，增强型真彩色）。 　

  • 1Byte=8bit　1Kb=1024Byte　1Mb=1024KB
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