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Quantization offset information determination method, image coding method and device and electronic equipment

A technology of offset information and determination method, which is applied in the field of video coding and can solve problems such as unsatisfactory performance of video coding rate-distortion

Pending Publication Date: 2020-11-24
BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
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Problems solved by technology

[0004] The present disclosure provides a method for determining quantization offset information, an image encoding method, an apparatus, and electronic equipment, so as to at least solve the problem in the related art that the rate-distortion performance of video encoding is not ideal due to the use of fixed quantization offset information

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  • Quantization offset information determination method, image coding method and device and electronic equipment
  • Quantization offset information determination method, image coding method and device and electronic equipment
  • Quantization offset information determination method, image coding method and device and electronic equipment

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Embodiment Construction

[0052] In order to enable ordinary persons in the art to better understand the technical solutions of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings.

[0053] It should be noted that the terms "first" and "second" in the specification and claims of the present disclosure and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the disclosure described herein can be practiced in sequences other than those illustrated or described herein. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consi...

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Abstract

The invention relates to a quantization offset information determination method, an image coding method and a device and electronic equipment, and relates to a video coding technology, and the methodcomprises the steps: obtaining a current image frame, and segmenting the current image frame into a plurality of image blocks according to a preset image size; for each image block, determining initial quantization offset information of the image block and content complexity information of the image block, wherein the content complexity information is used for representing the complexity degree ofimage content in the image block; and adjusting the initial quantization offset information according to the content complexity information to obtain target quantization offset information of the image block. Therefore, the image content condition of the corresponding image block is combined; according to the method, the quantization offset information corresponding to the corresponding image block is adaptively determined according to the quantization offset information of each image block, adaptive adjustment of the quantization offset information is realized, and subsequent coding based onthe quantization offset information corresponding to each image block is facilitated, so that the compression efficiency is not lost while the distortion of the image is reduced.

Description

technical field [0001] The present disclosure relates to the technical field of video coding, and in particular to a method for determining quantization offset information, an image coding method, a device, and electronic equipment. Background technique [0002] Quantization is a very important processing step in lossy video compression encoders (such as video compression encoders based on H.264 and H.265 standards). Quantization maps transform coefficients with a large dynamic range to a limited number of quantization intervals, fully Utilizes the perceptual redundancy characteristic of the human visual distortion system to achieve signal compression with less perceptual distortion. Quantization determines the size of video compression distortion, and also determines the bit rate of compressed video. [0003] There are two decisive parameters in the quantization process: quantization step size and quantization offset. For the quantization step size, a quantization paramet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/147H04N19/124
CPCH04N19/147H04N19/124
Inventor 黄博闻兴
Owner BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
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