摘要
渐晕效果(Vignetting)是指在光学系统输出端的信号产生与位置有关的亮度衰减,使得图像的外围出现阴影的现象。文中在分析现有算法的基础上提出了一种线性逼近的算法。该方法能够有效地去除渐晕效果,并具有内存占用小,运算复杂度低等优点。
Vignetting effect refers to the gradual fading at the periphery of a picture caused by a position dependent light attenuation in the output of an optical system. This paper proposes a method using a linear model, which has the advantage of small memory requirement and low complexity and can reduce vigetting efficiently.
出处
《电子科技》
2007年第10期67-70,共4页
Electronic Science and Technology
