贝叶斯抠图过程的中文解释，详细说明贝叶斯抠图的过程原理

叙述了多种matting算法 包括贝叶斯 泊松 closed-form spectral matting等-Described a variety of matting algorithm including the Bayesian Poisson closed-form spectral matting on, etc.

importance of bayesian approach is described clearly and comparison done with many other methods.