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Google patents method for decoding video block partitions

This filing describes a technique for decoding video data by checking if neighboring blocks share partition boundaries. It uses these checks to select a specific statistical model that helps reconstruct the current block of pixels more accurately.

Why it mattersThis is a routine improvement to video compression standards that helps decoders process video streams efficiently without changing the visible quality.

In the filing’s own words

Decoding using partition symbol context models includes obtaining reconstructed block data by accessing entropy coded block partition data, obtaining a left binary value indicating whether a location in a vertical line buffer for entropy coding context data for block partition signaling indicates a block partition boundary, obtaining an above binary value indicating whether a location in a horizontal line buffer for entropy coding context data for block partition signaling indicates a block partition boundary, determining a context model index value in accordance with the left binary value and the above binary value, obtaining decoded block partition data for the current block by entropy decoding the entropy coded block partition data in accordance with an entropy coding context model indicated by the context model index value, and generating the reconstructed block data in accordance with the decoded block partition data.

What exactly they claim (claim 1)

1. A method comprising: obtaining reconstructed block data for a current block of a current frame of a sequence of frames, wherein obtaining the reconstructed block data includes: accessing, from an encoded bitstream, entropy coded block partition data for the current block; obtaining a left binary value indicating whether a location in a vertical line buffer for entropy coding context data for block partition signaling, in a range of locations in the vertical line buffer from a first location in the vertical line buffer corresponding to a first mode information unit start value to a second location in the vertical line buffer corresponding to a first mode information unit end value, indicates a block partition boundary; obtaining an above binary value indicating whether a location in a horizontal line buffer for entropy coding context data for block partition signaling, in a range of locations in the horizontal line buffer from a first location in the horizontal line buffer corresponding to a second mode information unit start value to a second location in the horizontal line buffer corresponding to a second mode information unit end value, indicates a block partition boundary; determining a context model index value in accordance with the left binary value and the above binary value; obtaining decoded block partition data for the current block by entropy decoding the entropy coded block partition data in accordance with an entropy coding context model indicated by the context model index value; and generating the reconstructed block data in accordance with the decoded block partition data; including the reconstructed block data in reconstructed frame data for the current frame; and outputting the reconstructed frame data.

Facts

Company
Google (GOOGLE LLC)
Official title
PARTITION SYMBOL CONTEXT MODELS FOR IMAGE AND VIDEO CODING
Publication number
US20260281340A1
Application number
19557560
Filed
Mar 5, 2026
Published
Sep 17, 2026
Inventors
2
Claims
20

Classified under

H04N 19/119 Electricity & electronicsH04N 19/157 Electricity & electronicsH04N 19/176 Electricity & electronicsH04N 19/70 Electricity & electronicsH04N 19/91 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.