Methods and apparatus for artifact removal for bit depth scalability

Abstract

There are provided methods and apparatus for artifact removal for bit depth scalability. The method and apparatus utilize an encoder for encoding an enhancement layer for at least a portion of a picture. A deblocking filter is applied at the enhancement layer for bit depth scalability. A decoding method and apparatus are described for decoding an enhancement layer for at least a portion of a picture, wherein the during the decoding process, a deblocking filter is applied at the enhancement layer for bit depth scalability. Furthermore, an encoder and method are described for encoding image data for at least one block of a picture, wherein a deblocking filter (117) removes coding artifacts caused by local inverse tone mapping for intra-layer texture prediction for bit depth scalability. A decoding method and apparatus are described for decoding image data for at least one block of a picture, wherein a deblocking filter (230, 237, 435) removes coding artifacts caused by local inverse tone mapping for intra-layer texture prediction for bit depth scalability.

Description

Method and apparatus for artifact removal for bit depth scaling Cross References to Related Applications This application claims the benefit of US Provisional Application Serial No. 60 / 980,322, filed October 16, 2007, the entire contents of which are hereby incorporated by reference. Additionally, this application is related to nonprovisional application (Attorney Docket No. PU080158), entitled "METHODSANDAPPARATUSFORARTIFACTREMOVALFORBITDEPTHSCALABILITY," which also claims the benefit of U.S. Provisional Application Serial No. 60 / 980,322, filed October 16, 2007, which The non-provisional application has been assigned, is hereby incorporated by reference, and is commonly filed. technical field The present invention relates generally to video encoding and decoding, and more particularly to methods and apparatus for artifact removal for bitdepth scalability. Background technique Bit depth refers to the number of bits used to hold a pixel. Sometimes called "color depth" ...

AI Technical Summary

Problems solved by technology

The first solution is inherently non-compliant with the International Organization for Standardization / International Electrotechnical Commission (ISO / IEC) Moving Picture Experts Group-4 (MPEG-4) Part 10 Advanced Video Coding (AVC) standard / International Telecommunication Union Sector (ITU - T) 8-bit profile of the H.264 recommendation standard (hereinafter referred to as "MPEG-4 AVC standard")

The second solution meets all current standards, but requires more overhead

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