图像处理之基础---boxfiter

http://blog.sina.com.cn/s/blog_7221228801019yg2.html DSP6000图像位移与变形典型算法

http://blog.csdn.net/anson2004110/article/details/9082831  boxfilter  块滤波原理

http://blog.csdn.net/xiaowei_cqu/article/details/7785365 小魏

http://blog.csdn.net/tommyfgj/article/details/7927337 yuv422 to yuv420