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A video encoding and decoding method and device

A video coding and coding technology, applied in the field of communication, can solve the problem of low coding quality

Active Publication Date: 2019-10-22
HUAWEI TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Because the determination of quantization parameters when coding background frames in this technology does not consider the impact of video content changes, it only determines the quantization parameters of coding background frames according to the quantization parameter range of short-term reference frames, resulting in low coding quality during coding

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  • A video encoding and decoding method and device
  • A video encoding and decoding method and device
  • A video encoding and decoding method and device

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Embodiment Construction

[0169] Embodiments of the present invention provide a video encoding and decoding method and device, which improve the overall video encoding quality.

[0170] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. According to the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0171] The terms "first", "second" and the like (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects an...

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Abstract

An image encoding and decoding method, a video encoding and decoding method and a device. The image coding method includes: obtaining the first statistical feature of the first K frame images of the video sequence; determining the first background frame; determining a QP for encoding the first background frame according to the first statistical feature; The first background frame is encoded to obtain the first background long-term reference frame; according to the first background long-term reference frame, the K+1th frame image of the video sequence to the K+Lth frame image of the video sequence is encoded . Since when encoding the K+1th frame image of the video sequence to the K+Lth frame image of the video sequence, the coding QP of the background long-term reference frame used is the first statistical feature associated with the video content of the previous K frame image OK, improved overall video encoding quality.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a video encoding and decoding method and device. Background technique [0002] With the rapid development of the Internet and the increasingly rich material and spiritual culture of people, there are more and more requirements for video applications on the Internet, especially for high-definition video applications, and the data volume of high-definition videos is very large. For transmission in the Internet with limited bandwidth, the first problem to be solved is the problem of high-definition video compression and encoding. [0003] Due to the great time correlation of the video, that is, there are many similar image blocks in two adjacent frames of images. Therefore, in the inter-frame prediction of video coding, for the current block, the motion search is usually performed from the reconstructed frame, and the block that best matches the current block is fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/124
CPCH04N19/124H04N19/139H04N19/176H04N19/14H04N19/192H04N19/58H04N19/172
Inventor 陈方栋林四新李厚强李礼
Owner HUAWEI TECH CO LTD
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