基于屏幕背景色的彩色直线反走样算法

在真实感图形的绘制中，常需要在相机拍摄的自然背景上，对彩色直线进行反走样处理。彩色直线的反走样效果，不仅与前景色有关，而且受到背景色的影响。彩色直线上每一个像素点的反走样过程是由前景色向背景色的渐变融合，相邻像素的颜色分量的计算公式包含了背景色颜色分量。提出了彩色直线反走样算法将Wu反走样算法扩展到前景色和背景色的层面上去研究，深化了反走样理论。

An Antialiasing Algorithm of Color Line Based on Screen Background Color

The drawing of realistic graphics often deals with the antialiasing of color line on the background taken from the real world. The effect of antialiasing is not only with the foreground, but also with background. The fact of antialiasing is the merge from the foreground to background color. The calculation formula of adjacent pixel color consists of both foreground color and background color. It is proposed that antialiasing algorithm of color line expands the Wu Anti-aliasing algorithm to a level of background, deepening the antialiasing theory.