-
Yunqing Wang authored
Used 3 * standard_deviation in internal threshold calculation instead of fit curve. This actually approached the algorithm better. For comparison, similar tests were done: The overall psnr loss is less than before. 1. derf set: when static-thresh = 1, psnr loss is 0.329%; when static-thresh = 500, psnr loss is 0.970%; 2. stdhd set: when static-thresh = 1, psnr loss is 0.922%; when static-thresh = 500, psnr loss is 1.307%; Similar speedup is achieved. For example, clip bitrate static-thresh psnr time akiyo(cif) 500 0 48.952 5.077s(50f) akiyo 500 500 48.866 4.169s(50f) parkjoy(1080p) 4000 0 30.388 78.20s(30f) parkjoy 4000 500 30.367 70.85s(30f) sunflower(1080p) 4000 0 44.402 74.55s(30f) sunflower 4000 500 44.414 68.69s(30f) Change-Id: Ic78833642ce1911dbbd1cb6c899a2d7e2dfcc1f3
52256cdb