为什么BMP格式跟JPG大小差那么多?

[maid]

同样的图片，1.5M跟60多K的区别，而画质看起来并没什么变化。

 

[jackywyy]

*.jgp is using single color point, which is, for each point, there is only one color.

*.bmp is using multi color point, each point is covered by several points of different colors, which can result the color you want. Therefore, bmp is not only one pic, if you use graphic analysis tools, you can see the process of how a bmp file is opened (slowly), and you can see all the points are painted for a few times.

 

[jackywyy]

only personal understanding

 

[maid]

恩，挺有道理，谢谢。