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Method and Related Devices for Determining Coding Cost of Coding Units

A coding unit and coding cost technology, which is applied in the field of determining the coding cost of a coding unit, can solve problems such as low coding rate and long time required

Active Publication Date: 2021-03-02
TENCENT TECH (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since each CU in the tree structure needs to perform calculations such as predictive coding and coding cost calculations to determine the coding cost of the CU and determine whether the CU needs to be divided, this algorithm requires a lot of calculations, takes a lot of time, and the coding rate lower

Method used

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  • Method and Related Devices for Determining Coding Cost of Coding Units
  • Method and Related Devices for Determining Coding Cost of Coding Units
  • Method and Related Devices for Determining Coding Cost of Coding Units

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Embodiment Construction

[0085] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0086] Before introducing the solutions of the embodiments of the present invention, in order to facilitate understanding of the solutions of the embodiments of the present invention, some definitions related to the embodiments of the present invention in the HEVC standard are firstly introduced.

[0087] 1. CTU. CTU is the basic unit when dividing a frame of image. Before encoding a frame of image, it needs to divide a frame of image. In the pro...

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Abstract

The invention discloses a method and a related device for determining the coding cost of a coding unit. The method includes: determining a coding unit for predictive coding in an intra-frame prediction mode; and determining pixel gradient information corresponding to the coding unit, where the pixel gradient information includes pixel gradient variance , the pixel gradient variance is the variance of the image gradient of at least some pixels in the coding unit; the coding unit is divided and pre-judged according to the pixel gradient information; Determined as the second coding cost of the coding unit, the second coding cost is used to determine the division strategy of the coding tree unit corresponding to the coding unit, and the first coding cost is to use the current size of the coding unit as the size of the prediction unit to predict the coding unit The encoding cost obtained by encoding. In the technical scheme of the present invention, by ending the division of coding units in advance, the amount of calculation can be reduced, the coding complexity can be reduced, and the coding rate can be improved.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a method and a related device for determining the coding cost of a coding unit. Background technique [0002] High Efficiency Video Coding (HEVC) is a new generation jointly formulated by the International Telecommunications Union-Telecommunications Standardization Sector (ITU-T) and the International Standards Organization (ISO) under the management of the International Telecommunication Union. High-efficiency video coding standard, HEVC can also be called H.265. Compared with the H.264 / Advanced Video Coding (AVC) standard, HEVC uses more, newer, and more flexible coding technologies. Under the same video quality conditions, HEVC can further reduce the coding bit rate. [0003] The HEVC standard continues the block-based video compression coding framework in the H.264 / AVC standard. Compared with the macroblock (Macroblock, MB) used in the H.264 / AVC standard, the HEVC ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/119H04N19/136H04N19/176H04N19/105H04N19/147
CPCH04N19/119H04N19/136H04N19/176H04N19/105H04N19/147H04N19/159H04N19/1883H04N19/96G06F17/18
Inventor 毛煦楠
Owner TENCENT TECH (BEIJING) CO LTD
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