Methods and apparatus for using syntax for the coded_—block_—flag syntax element and the code_—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 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 indicates a presence of at least one 8×8 block in the resultant bitstream using a syntax element.

主权项

1. An apparatus, comprising:
an encoder 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 having a same height and a same width as the luminance array, wherein said encoder indicates a presence of non-zero transform coefficients for at least one 8×8 block in the resultant bitstream using a first syntax element, and indicates 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 a second syntax element, and wherein said encoder encodes the image data into the resultant bitstream in accordance with the encoding profile by performing a mapping process for a coded block pattern syntax element using a monochrome chroma array type; wherein the first syntax element indicates the presence of the at least one 8×8 block to permit selectively disabling an application of the Context Adaptive Binary Arithmetic Coding (CABAC) to the at least one 8×8 block by a decoder.