Patent ID: 9270871
Filing Date: 2016-02-23
CPC Classification: H04N

Claim Text:
1. A method for selecting a particular filter from among a plurality of filters, the particular filter adapted for use in a reference picture processing unit of a computer processor in a multi-layered video coding system, the multi-layered video coding system comprising a base layer and one or more enhancement layers, the method comprising: a) providing a reference picture and an enhancement layer source picture; b) filtering copies of the reference picture using at least one filter from the plurality of filters to obtain at least one filtered reference picture, wherein each filter is applied to a corresponding copy of the reference picture; c) performing disparity estimation based on the enhancement layer source picture and a full set or subset of the at least one filtered reference picture, wherein the disparity estimation is adapted to generate disparity information, the disparity information being further based on temporal reference pictures from an enhancement layer picture buffer; d) obtaining distortion information based on the disparity information; e) selecting the particular filter based on comparing the distortion information generated in the distortion information obtaining step d); and f) for each filtered reference picture on which disparity estimation has been performed in accordance with step c), selecting between said reference picture and a corresponding temporal reference picture from the enhancement layer picture buffer, wherein the disparity information comprises a function of at least one of motion vectors, prediction distortion, intra prediction information, illumination parameters, luma components, chroma components, and tone mapping parameters.