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Paul Wilkins authored
Some initial experiments into discounting dead zone formating bars and intra skip blocks (common in some types of animation and graphics) in the calculation of the active max Q for each ARF/GF group. TODO: check for vertical formating bars and validate the horizontal bar at the bottom edge of the image. As expected, this change as it stands, does not make much difference for the natural videos in the std-hd and derf sets. However, for the yt and yt hd set there is a significant rise in the average PSNR with overall PSNR and SSIM remaining neutral. The mean rise for the YT-HD test set was > 6%. This is mainly because the change allows Q to drop further on titles and other graphics sections where spending a small number of extra bits gives a sharp rise in PSNR. Change-Id: I3f878ae91fc1854312d7ecf9fa792c17bc1aa6b7
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