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Jingning Han authored
The soft coefficient optimization process would monotonically increase the transform block distortion and decrease the coefficient rate cost. Such observation provides a lower bound on the rate-distortion cost for the given transform block. This commit compares this lower bound against the best available rate-distortion cost value and skips unnecessary optimization process. It speeds up the baseline encoding process by 15%. Change-Id: Ida8098a2820cef60d59ec1e72f0bbb1acbd98165
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