全局Poisson抠图的实现与改进

Realization and Improvement of Global Poisson Matting

数字抠图技术是一种把图像的前景部分从背景中分离出来的一种技术,它在电影、电视等视频制作中得到了广泛的应用。文章主要目的是对Poisson抠图方法进行改进,以取得更好的处理效果或更快的处理速度。首先对Poisson抠图技术进行了简单的介绍,并对它的实现过程进行了描述。最后,用区域生长的方法对全局Poisson抠图进行了改进,减少了算法的执行时间。

The matting problem is to extract a foreground element of arbitrary shape from a background image by estimating a color and opacity for the foreground element at each pixel. The main purpose is to improve the Poisson mattingand get a better processing result or a faster processing speed. An improvement method of global Poisson matting was proposed based on region growing, which required less time in matting progress.