ref: 6c565fada0820c9c2be6e931237b858cf8bbb5d1
parent: aeca599087409c83cf4e24a59b5830a380e22327
author: Yaowu Xu <yaowu@google.com>
date: Mon May 2 11:27:14 EDT 2011
change to use fast ssim code for internal ssim calculations The commit also removed the slow ssim calculation that uses a 7x7 kernel, and revised the comments to better describe how sample ssim values are computed and averaged Change-Id: I1d874073cddca00f3c997f4b9a9a3db0aa212276