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Image data encoding and decoding method and device

一种解码方法、图像数据的技术，应用在图像处理领域，能够解决编码复杂度高等问题，达到降低复杂度、数量减少的效果

Pending Publication Date: 2021-04-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a method and device for encoding and decoding image data, which can solve the current problem of high encoding complexity

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  • Image data encoding and decoding method and device
  • Image data encoding and decoding method and device
  • Image data encoding and decoding method and device

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Embodiment Construction

[0058]The description and claims of the present application and the terms "first", "second", "third", and "fourth", and the fourth ", and the like are used to distinguish a particular order.

[0059]In the present application embodiment, "exemplary" or ",",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,. Any embodiment or embodiment of the present application is described as "exemplary" or ",", for example, "should not be construed as being more preferred or more advantageous than other embodiments or design. Specifically, the use of "exemplary" or ", for example," is intended to present the relevant concept in a specific manner.

[0060]In order to facilitate understanding of the present application embodiment, the related elements involved in the present application embodiment will be described herein.

[0061]Coding Tree Unit, CTU: A image consists of multiple CTUs, a CTU usually corresponds to a square image area, such asfigure 1 (a), the image 10 is composed of a plu...

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Abstract

The embodiment of the invention discloses an image data encoding and decoding method and device, relates to the field of image processing, and solves the problem of relatively high encoding complexity. The decoding method comprises the following steps: obtaining a code stream containing image data; analyzing the code stream to obtain node division mode information of a first-stage coding tree andnode division mode information of a second-stage coding tree, the node division mode information of the second-stage coding tree indicating a division mode corresponding to a first node in the second-stage coding tree, wherein the division mode corresponding to the first node is one of candidate division mode sets corresponding to the first node determined according to a first preset division condition, and the first preset division condition is used for indicating whether the division of the first node according to a target division mode is limited or not; if the division mode corresponding to the first node is non-continuous division, analyzing the code stream to obtain coding information of the first node; and decoding and reconstructing the coding unit corresponding to the first node according to the coding information of the first node to obtain an image corresponding to the image data.

Description

Technical field[0001]The present application embodiment relates to the field of image processing, and more particularly to an encoding, decoding method, and apparatus for image data.Background technique[0002]The video codec standard H.265 divides one frame image into a coding tree unit (Coding Treeunit, CTU) that is not overlapping, and the root node of quad-trees (QT), according to Qt structures Regenerating each CTU into a number of leaf nodes. Each node in the QT structure corresponds to an image area. If a node is no longer divided, the node is referred to as a leaf node, and its corresponding image area forms a coding unit (CODING Unit, Cu). Therefore, it is considered that H.265 is a process of dividing the CTU into a set of Cu. The CTU is divided into a set of CUs corresponding to a coding tree.[0003]The Joint Exploration Team on Future Video Coding, JVET) Reference Software Joint Explorer, JEM, proposes a QTBT division method, that is, the node in the first level coding tree...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/119H04N19/182H04N19/70H04N19/42H04N19/184H04N19/105H04N19/44H04N19/172H04N19/17H04N19/176H04N19/147H04N19/96
CPCH04N19/105H04N19/147H04N19/17H04N19/176H04N19/182H04N19/42H04N19/44H04N19/96H04N19/119H04N19/70H04N19/184H04N19/172
Inventor 赵寅杨海涛刘杉
Owner HUAWEI TECH CO LTD