DYNAMIC SELECTION OF MOTION PREDICTION SEARCH RANGE AND RANGE OF EXTENSION MOTION VECTOR

摘要

PROBLEM TO BE SOLVED: To provide a technique for switching dynamically distortion metric during motion prediction.;SOLUTION: A metric selection criterion is based, at least partially, on the initial results of motion prediction. A step for selecting a distortion metric based, at least partially, on the distortion metric selection criterion selects among a plurality of available distortion metrics, in order to balance the complexity of calculation and accuracy of approximation of rate distortion cost. The plurality of available distortion metrics include a sample area distortion metric and a conversion area distortion metric. The sample area distortion metric is characterized by lower calculation complexity and lower accuracy of approximation of rate distortion cost. The conversion area distortion metric is characterized by higher accuracy of approximation of rate distortion cost and higher calculation complexity.;COPYRIGHT: (C)2015,JPO&INPIT