METHODS AND APPARATUS FOR USING SYNTAX FOR THE CODED_BLOCK_FLAG SYNTAX ELEMENT AND THE CODED_BLOCK_PATTERN SYNTAX ELEMENT FOR THE CAVLC 4:4:4 INTRA, HIGH 4:4:4 INTRA, AND HIGH 4:4:4 PREDICTIVE PROFILES IN MPEG-4 AVC HIGH LEVEL CODING

摘要

There are provided methods and apparatus for using syntax for the coded_block_flag syntax element for the CAVLC 4:4:4 Intra, High 4:4:4 Intra, and High 4:4:4 Predictive profiles in MPEG-4 AVC high level coding. An apparatus includes an encoder (100) for encoding image data into a resultant bitstream in accordance with an encoding profile that encodes a sample of the image data such that the sample includes two chrominance arrays and a luminance array. Each of the two chrominance arrays has a same height and a same width as the luminance array. The encoder (100) indicates a presence of at least one 8×8 block in the resultant bitstream using a syntax element.

主权项

1. A method, comprising:
encoding image data into a resultant bitstream in accordance with an encoding profile that encodes at least one 8×8 block of the image data such that the at least one 8×8 block includes two chrominance arrays and a luminance array, each of the two chrominance arrays having a same height and a same width as the luminance array, wherein said encoding comprises indicating a presence of non-zero transform coefficients for the at least one 8×8 block in the resultant bitstream using a first syntax, which permits selectively disabling an application of context adaptive binary arithmetic coding (CABAC) to the at least one 8×8 block based on whether the non-zero transform coefficients are present in the at least one 8×8 block, and indicating a presence of non-zero transform coefficients for each of the two chrominance arrays and the luminance array of the at least one 8×8 block in the resultant bitstream using additional syntax different from the first syntax.