US Patent Application 18218796. RULES FOR INTRA-PICTURE PREDICTION MODES WHEN WAVEFRONT PARALLEL PROCESSING IS ENABLED simplified abstract

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RULES FOR INTRA-PICTURE PREDICTION MODES WHEN WAVEFRONT PARALLEL PROCESSING IS ENABLED

Organization Name

MICROSOFT TECHNOLOGY LICENSING, LLC

Inventor(s)

Bin Li of Beijing (CN)

Jizheng Xu of Beijing (CN)

RULES FOR INTRA-PICTURE PREDICTION MODES WHEN WAVEFRONT PARALLEL PROCESSING IS ENABLED - A simplified explanation of the abstract

This abstract first appeared for US patent application 18218796 titled 'RULES FOR INTRA-PICTURE PREDICTION MODES WHEN WAVEFRONT PARALLEL PROCESSING IS ENABLED

Simplified Explanation

The abstract describes various innovations that enhance the use of intra-picture prediction modes in video encoding and decoding when wavefront parallel processing (WPP) is enabled.

  • Intra-picture prediction modes include palette prediction mode, intra block copy mode, intra line copy mode, and intra string copy mode.
  • The innovations focus on enabling an encoder or decoder to efficiently utilize these prediction modes when WPP is enabled.
  • For palette coding/decoding mode, the encoder or decoder predicts a palette for a unit in a current WPP row using previous palette data from a unit in a previous WPP row.
  • This allows for more accurate and efficient encoding or decoding of palette information in the video.
  • For intra copy modes (e.g., intra block copy mode, intra string copy mode, intra line copy mode), the encoder enforces constraints specific to WPP, ensuring the encoded data adheres to the requirements of WPP.
  • Similarly, the decoder receives and decodes encoded data that satisfies the constraints imposed by WPP.
  • These innovations improve the overall performance and efficiency of video encoding and decoding when utilizing intra-picture prediction modes with WPP enabled.


Original Abstract Submitted

Various innovations facilitate the use of intra-picture prediction modes such as palette prediction mode, intra block copy mode, intra line copy mode and intra string copy mode by an encoder or decoder when wavefront parallel processing (“WPP”) is enabled. For example, for a palette coding/decoding mode, an encoder or decoder predicts a palette for an initial unit in a current WPP row of a picture using previous palette data from a previous unit in a previous WPP row of the picture. Or, as another example, for an intra copy mode (e.g., intra block copy mode, intra string copy mode, intra line copy mode), an encoder enforces one or more constraints attributable to the WPP, or a decoder receives and decodes encoded data that satisfies one or more constraints attributable to WPP.

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