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An intra-frame prediction mode, depth technology, applied in the field of video coding and compression
Inactive Publication Date: 2016-05-11
QUALCOMM INC
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[0004] Spatial or temporal prediction leads to a predictive block of the block to be decoded
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example 1
[0561]Example 1. A method of decoding video data, the method comprising: decoding a first syntax element from an encoded video bitstream, wherein a first value of the first syntax element indicates a depth block from a plurality of depth intra prediction modes The selected depth intra prediction mode is one of a planar intra prediction mode, a DC intra prediction mode, or a directional intra prediction mode, and the second value of the first syntax element indicates the selected depth intra prediction mode for the depth block The depth intra prediction mode is one of a plurality of depth modeling modes or region boundary chain coding modes; decoding a second syntax element from 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 a residual of a pl...
example 2
[0562] Example 2. The method of example 1, wherein the first syntax element includes a hevc_intra_flag syntax element and the second syntax element includes a sdc_flag syntax element.
example 3
[0563] Example 3. The method of example 1, wherein decoding the first and second syntax elements comprises decoding the first and second syntax elements according to a context adaptive binary arithmetic coding (CABAC) process.
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Abstract
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.
Description
technical field [0001] This disclosure relates to video coding and compression, and more particularly to techniques for coding residual values for depth intra-prediction modes. Background technique [0002] Digital video capabilities can be incorporated into a wide range of devices, including digital televisions, digital broadcast systems, wireless broadcast systems, tablet computers, smart phones, personal digital assistants (PDAs), laptop or desktop computers, digital Cameras, digital recording devices, digital media players, video game devices, video game consoles, cellular or satellite radiotelephones, video teleconferencing devices, set-top box devices, and the like. Digital video devices implement video compression techniques such as those described in: MPEG-2, MPEG-4, ITU-TH.263, ITU-TH.264 / MPEG-4 Part 10 Advanced Video Coding (AVC), the High Efficiency Video Coding (HEVC) standard, and extensions of such standards. Video devices can more efficiently transmit, rec...
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