Android 模糊效果实现

1.StackBlur算法

http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html
(FastBlurUtil)https://github.com/wingjay/BlurImageView/blob/master/blurimageviewlib/src/main/java/com/wingjay/blurimageviewlib/FastBlurUtil.java
(Blurry)https://github.com/wasabeef/Blurry/blob/master/blurry/src/main/java/jp/wasabeef/blurry/internal/Blur.java

2.高斯Gaussian模糊算法

https://my.oschina.net/tonywolf/blog/64896

3.RenderScript

(BlurKit) https://github.com/gogopop/BlurKit-Android
(Blurry)https://github.com/wasabeef/Blurry/blob/master/blurry/src/main/java/jp/wasabeef/blurry/internal/Blur.java
http://www.jianshu.com/p/ef939e469728
http://blog.jobbole.com/63894/
注意：RenderScript的创建比较耗时间
RenderScript rs = RenderScript.create(context)；

Demo https://github.com/GoldbergM/BlurDemo