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Intra-prediction with multiple reference lines

An intra-frame prediction mode and reference line technology, applied in image communication, digital video signal modification, electrical components, etc., can solve the problem of video size

Active Publication Date: 2019-09-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The size of the video can also be an issue when storing the video on a storage device due to potentially limited memory resources

Method used

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  • Intra-prediction with multiple reference lines
  • Intra-prediction with multiple reference lines
  • Intra-prediction with multiple reference lines

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Experimental program
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Embodiment Construction

[0051] It should be understood at the outset that although an illustrative implementation of one or more embodiments is provided below, the disclosed systems and / or methods may be implemented using any number of techniques, whether currently known or in existence. The invention should in no way be limited to the illustrative implementations, drawings, and techniques illustrated below, including the exemplary designs and implementations illustrated and described herein, but rather be within the scope of the appended claims and their equivalents Modified within the full range of .

[0052] Video data is compressed using multiple schemes in combination during video encoding. For example, a video sequence is divided into image frames, and then the image frames are partitioned to obtain image blocks. Then, inter-frame prediction (relationship between blocks in different frames) or intra-frame prediction (blocks in the same frame The relationship between) to compress the image bloc...

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Abstract

A video coding device receives a bitstream including video data. The device determines an intra-prediction mode subset. The intra-prediction mode subset include intra-prediction modes that correlate to a plurality of reference lines for a current image block and excludes intra-prediction modes that correlate to a primary reference line for the current image block. When a first intra-prediction mode is included in the intra-prediction mode subset, the device decodes the first intra-prediction mode by an alternative intra-prediction mode index. When the first intra-prediction mode is not included in the intra-prediction mode subset, the device decodes the first intra-prediction mode by an intra-prediction mode index. The device presents video data including an image block decoded based on the first intra-prediction mode.

Description

[0001] Related Applications Cross Application [0002] This application claims priority from an earlier application to U.S. Nonprovisional Patent Application No. 15 / 972,870, filed May 7, 2018, entitled "Intra Prediction Using Multiple Reference Lines," which in turn claims U.S. Provisional Patent Application No. 62 / 503,884, filed May 9, 2017 by Shan Liu et al., entitled "Method and Apparatus for Intra Prediction Using Multiple Reference Lines" and filed on May 26, 2017 by Priority of prior applications to U.S. Provisional Patent Application No. 62 / 511,757, entitled "Method and Apparatus for Intra Prediction Using Multiple Reference Lines," filed by Xiang Ma et al., the contents of which are incorporated by reference incorporated into this text. [0003] Statement Regarding Research or Development Sponsored by the Federal Government [0004] Not applicable. [0005] Refer to Microfiche Addendum [0006] Not applicable. Background technique [0007] Even depicting relativel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/11
CPCH04N19/11H04N19/176H04N19/593H04N19/82H04N19/70H04N19/105H04N19/182H04N19/13H04N19/197H04N19/184H04N19/139H04N19/96H04N19/107H04N19/61H04N19/523
Inventor 刘杉马祥
Owner HUAWEI TECH CO LTD