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Method and apparatus of combined inter and intraprediction for video coding

A prediction method and video encoding and decoding technology, applied in the signaling of triangle CIIP, the field of candidate list derivation

Pending Publication Date: 2021-09-07
HFI INNOVATION INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Note that this mode only works with skip and / or merge modes

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  • Method and apparatus of combined inter and intraprediction for video coding
  • Method and apparatus of combined inter and intraprediction for video coding
  • Method and apparatus of combined inter and intraprediction for video coding

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Embodiment Construction

[0072] The following description is of the best contemplated mode of carrying out the invention. This description is made to illustrate the general principles of the invention and should not be considered in a limiting sense. The scope of the invention is best determined by reference to the appended claims.

[0073] CIIP mode aims to improve inter prediction by combining an additional assumption of intra prediction with existing merge prediction, and can be viewed as normal intra mode, normal inter mode, or a new combined mode. In the present invention, intra prediction can be generated from HEVC-like intra-mode or HEVC-like intra-mode and one or more newly developed codec tools. The new tools can be 67 intra prediction modes, ISP modes, or any combination of the above. When the intra prediction for CIIP mode is from the ISP, the flow is as follows, described as steps 1 to 4.

[0074] Step 1: Perform inter prediction on a CU, and store the inter prediction in a buffer.

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Abstract

A method and an apparatus of prediction for video coding are disclosed. According to one method, a block is partitioned into a first and second regions using a target partition selected from a partition set comprising triangle partition. A Merge candidate list is determined for a partitioned current block by including at least one HMVP (history-based motion vector prediction) candidate from an HMVP buffer, where the HMVP buffer stores motion information of previously coded blocks. The partitioned current block or current motion information associated with the partitioned current block are encoded or decoded using the Merge candidate list, where the Merge candidate list is used to derive a first candidate for the first region and a second candidate for the second region. In another method, whether to apply triangular CIIP (combined Inter / Intra prediction) to the current block is signaled at an encoder side or parsed at a decoder side.

Description

[0001] 【CROSS-REFERENCE TO RELATED APPLICATIONS】 [0002] The present invention claims the priority of U.S. Provisional Patent Application No. 62 / 799,127 filed on January 31, 2019 and U.S. Provisional Patent Application No. 62 / 799,782 filed on February 1, 2019. The content of the above US Provisional Patent Application is hereby incorporated by reference. 【Technical field】 [0003] The present invention relates to the use of Triangle Prediction Mode (Triangle Prediction Mode, abbreviated as TPM) and inter / intra (also known as inter / intra) joint prediction (Combined Inter / Intra Prediction, abbreviated as CIIP) for video encoding and decoding predict. In particular, the present invention discloses candidate list derivation for TPM using History-based Motion Vector Prediction (HMVP for short). Additionally, a method for signaling of triangular CIIP is disclosed. 【Background technique】 [0004] High Efficiency Video Codec (HEVC) is a new international video codec standard dev...

Claims

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Application Information

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IPC IPC(8): H04N19/50
CPCH04N19/513H04N19/119H04N19/176H04N19/593
Inventor 江嫚书徐志玮庄子德陈庆晔
Owner HFI INNOVATION INC