摘要
计算机显示器设置成256色模式，在显示真彩色图像时，会出现失真情况。传统的抖动法和设置专用调色板的方法都不能较好地解决这一问题。文中分析真彩色图像在TVGA显示器上显示方法的基础上，讨论了科动法和设置专用调色板方法的优缺点，并运用信息论理论中最大离散墙定理提出了一种选择调色板的方法。该算法依据图像的实际颜色分布，选出颜色子空间，进而形成调色板，能较好地解决真彩色图像的显示问题。
If the computer monitor is set to 256 colour mode, the true colour im-age will be distored on the screen. Both the dither and the special purposepalette can not slove this problem well. This paper analyses the display methodof the ture colour image in SVGA monitor, then, discusses the strong and weakpoints of the dither and the special purpose palette. Base on the informationtheory, a new method of palette selection is given- This method selects thecolour subspace according to the real colour distribution, then forms paletteso, it can slove the display of the true colour on the screen well.
出处
《现代电力》
1997年第2期73-77,共5页
Modern Electric Power
