ref: 80a4f559891cf7553c087a6120cc5ed9fff30390
parent: 741c6bb619e2a8d0ee890e6764e815f962155b44
author: Jingning Han <jingning@google.com>
date: Thu Apr 17 05:58:17 EDT 2014
Enable background detection for adaptive quantizer control This commit enables a background detection approach for adaptive quantizer control. It combines the cyclic refresh pattern and the background information to determine the segment id for adaptive quantizer selection, prior to the non-RD mode decision process. It hence allows proper quantization information update for a more precise rate-distortion modeling in the non-RD mode decision. The compression performance of speed -5 for rtc set is improved by 2.5%, at no speed change. Change-Id: Ic3713e8ed9185b403b5b1679d19dabd57506d452