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Intra prediction mode selection method, encoder and storage device

An intra-frame prediction mode and mode technology, applied in the field of video coding, can solve problems affecting the accuracy of intra-frame prediction mode selection

Active Publication Date: 2021-07-13
ZHEJIANG DAHUA TECH CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present application provides a method for selecting an intra prediction mode, an encoder, and a storage device, which can solve the problem in the related art that the construction method of the MPM list and the selection method of the intra prediction mode affect the accuracy of the selection of the intra prediction mode

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  • Intra prediction mode selection method, encoder and storage device
  • Intra prediction mode selection method, encoder and storage device
  • Intra prediction mode selection method, encoder and storage device

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only part of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0023] The terms "first", "second", and "third" in this application are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, features defined as "first", "second", and "third" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless...

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Abstract

The invention discloses a method for selecting an intra-frame prediction mode, an encoder and a storage device. The intra-frame prediction mode selection method includes: dividing the current coding block into at least one region; using the first reference mode and the second reference mode of the region to construct the most probable mode list of the region on at least one reference line, the first reference mode is The intra prediction mode of the first reference block of the area, the second reference mode is the intra prediction mode of the second reference block of the area, the first reference block is located on the first side of the area and has been encoded, and the second reference block is located in the area The second side of the second side has been encoded, and the first side is adjacent to the second side; according to the principle of minimum prediction cost, the intra prediction mode of the region is selected based on the most probable mode list of the region on at least one reference line. Through the above manner, the present invention can improve the accuracy of intra prediction mode selection.

Description

technical field [0001] The present application relates to the field of video coding, in particular to a method for selecting an intra-frame prediction mode, an encoder and a storage device. Background technique [0002] Because the amount of video image data is relatively large, it usually needs to be encoded and compressed before being transmitted or stored. The encoded data is called a video stream. Limited by hardware and other conditions, such as limited storage space, limited transmission bandwidth, etc., the encoder always hopes to make the video stream as small as possible. [0003] Video coding mainly includes video acquisition, prediction, transform quantization and entropy coding. The prediction is divided into two parts: intra prediction and inter prediction, which are used to remove spatial redundancy and temporal redundancy respectively. [0004] Intra-frame prediction is to predict the pixel value of the current pixel according to the pixel values ​​of the cod...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/11H04N19/176
CPCH04N19/11H04N19/176
Inventor 方诚江东林聚财殷俊曾飞洋
Owner ZHEJIANG DAHUA TECH CO LTD