「Image Processing」Notes on Guided Image Filtering

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http://blog.csdn.net/dgyuanshaofeng/article/details/83033073

之前，做半身肖像分割和头发分割，获得分割图之后，需要利用引导图像滤波[1]进行alpha matte估计。现在的话，有人用神经网络去逼近或学习这种滤波方法[2]。

[1] Guided Image Filtering ECCV 2010 [paper]
[2] Fast Deep Matting for Portrait Animation on Mobile Phone 2017 [paper]