RESIDUAL CODING FOR DEPTH INTRA PREDICTION MODES

摘要

A video coder may perform a simplified depth coding (SDC) mode, including simplified residual coding, to code a depth block according to any of a variety of, e.g., at least three, depth intra prediction modes. For example, the video coder may perform the SDC mode for coding a depth block according to depth modeling mode (DMM) 3, DMM 4, or a region boundary chain coding mode. In such examples, the video coder may partition the depth block, and code respective DC residual values for each partition. In some examples, the video coder may perform the SDC mode for coding a depth block according to an intra prediction mode, e.g., an HEVC base specification intra prediction mode, such as a DC intra prediction mode or one of the directional intra prediction modes. In such examples, the video coder may code a single DC residual value for the depth block.

主权项

1. A method of coding video data, the method comprising:
coding a first syntax element in an encoded video bitstream, wherein a first value of the first syntax element indicates that a depth intra prediction mode selected for a depth block from a plurality of depth intra prediction modes is one of a Planar intra prediction mode, DC intra prediction mode, or directional intra prediction mode, and a second value of the first syntax element indicates that the depth intra prediction mode selected for the depth block is one of a plurality of depth modeling modes or a region boundary chain coding mode; coding a second syntax element in the encoded video bitstream, wherein the second syntax element indicates whether to perform a simplified depth coding (SDC) mode to reconstruct the depth block, the SDC mode comprising decoding at least one DC residual value from the bitstream, wherein the DC residual value represents residual values of a plurality of samples of the depth block; and coding the depth block according to the first and second syntax elements.