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In this paper, we present a method for performing rate-distortion optimization (RDO) using a perceptual visual quality metric, the structural similarity index (SSIM), as the target of optimization. Rate-distortion optimization is widely used in modern video codecs to make various encoder decisions to optimize the rate-distortion tradeoff. Typically, the distortion measure used is either sum-of-square...
In the current HEVC test model (HM), a quad-tree based coding tree block (CTB) representation is used to signal mode, partition, prediction and residual information. The large number of combinations of quad-tree partitions and modes to be tested during rate-distortion optimization (RDO) results in a high encoding complexity. In this paper, we investigate and compare a variety of algorithms for fast...
Rate-distortion optimization is widely used in modern video codecs to make various encoder decisions in order to optimize the rate-distortion trade-off. Typically, the distortion measure used is either sum-of-square error (SSE) or sum-of-absolute distance (SAD), both of which are convenient when used in the RDO framework but not always reflective of perceptual quality. In this paper, we show that...
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