ref: b99749b540f865cf5b8b32604d918c0760a3071a
parent: dd3d08f0c227ebe08b445801eeb38d39cc06f377
author: Paul Wilkins <paulwilkins@google.com>
date: Tue Jun 26 11:57:51 EDT 2018
Enhanced partition experiment. This patch relates to motion artifacts as described in Issue 73484098 The aim of this patch is to promote the use of smaller partition sizes in places where some of the sub blocks have very low spatial complexity and some have much higher complexity. The patch can have a small impact on encode speed, but much less than alternative approaches such as lowering the rd thresholds that limit the partition search when distortion is low. The patch also applies a similar sub block strategy for AQ1. Metrics results for our standard sets over typical YT rates. (Overall PSNR, SSIM, PSNR HVS) % -ve better. Low Res -0.274, -0.303, -0.330 Mid Res 0.001, - 0.128, -0.100 Hd Res -0.236, -0.371, -0.349 N 2K -0.663, -0.798, -0.708 N 4K -0.488, -0.588, -0.517 Change-Id: Ice1fc977c1d29fd5e401f9c7c8e8ff7a5f410717