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John Koleszar authored
Adds a per-frame, strength adjustable, in loop deringing filter. Uses the existing vp9_post_proc_down_and_across 5 tap thresholded blur code, with a brute force search for the threshold. Results almost strictly positive on the YT HD set, either having no effect or helping PSNR in the range of 1-3% (overall average 0.8%). Results more mixed for the CIF set, (-0.5 min, 1.4 max, 0.1 avg). This has an almost strictly negative impact to SSIM, so examining a different filter or a more balanced search heuristic is in order. Other test set results pending. Change-Id: I5ca6ee8fe292dfa3f2eab7f65332423fa1710b58
441e2eab
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