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Coding and decoding method and device

A technology of decoding method and encoding method, which is applied in the fields of digital video signal modification, electrical components, image communication, etc., can solve problems such as inability to meet the division method, complex texture requirements, etc. The effect of improving image quality

Active Publication Date: 2019-11-26
HUAWEI TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present application provides an encoding and decoding method and device, which can solve the problem that the existing division method cannot meet the relatively complex texture requirements

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Embodiment Construction

[0083] The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the above drawings are used to distinguish different objects, rather than to limit a specific order.

[0084] In the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

[0085]A complete image in a video is usually called a "frame", and a video composed of many frames in time order is also called a video sequence (Video Sequence). Video sequences have a series of redundant information such as spatial redundancy, temporal redunda...

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Abstract

The embodiment of the invention discloses a coding and decoding method and device, relates to the field of video coding, decoding and compression, and solves the problem that an existing division modecannot meet the complex texture requirement. The decoding method specifically comprises the following steps: analyzing a code stream, and determining a basic division mode of a current to-be-decodedimage block and a target derivation mode of a sub-image block in the current to-be-decoded image block; according to the basic division mode, dividing the current image block to be decoded into N sub-image blocks, wherein N is an integer larger than or equal to 2; deriving at least two adjacent sub-image blocks in the N sub-image blocks into a derived image block according to the target derivationmode; and decoding the derived image block.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 201810470411.5 and the invention title "Video Codec Method and Device" submitted to the China Patent Office on May 16, 2018, the entire contents of which are incorporated by reference in this application. technical field [0002] The embodiments of the present application relate to the field of video codec and compression, and in particular, to a codec method and device. Background technique [0003] The basic processing unit of video encoding and decoding is an image block, which is obtained by dividing a frame / image at the encoding end. The fineness and diversity of image block division affect the texture and contour characteristics of the image to a certain extent. [0004] Currently, image block division methods include quadtree plus binary tree (QuadTree plus Binary Tree, QTBT) division manner, triple tree (Triple Tree, TT) division manner, arbitrary binary tree (As...

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Application Information

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IPC IPC(8): H04N19/172H04N19/96
CPCH04N19/96H04N19/172H04N19/176H04N19/119H04N19/463H04N19/70H04N19/147H04N19/91H04N19/105H04N19/46
Inventor 余全合安基程郑建铧林永兵王力强牛犇犇魏紫威何芸
Owner HUAWEI TECH CO LTD