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Long-term reference image selection method and device

A long-term reference image and image technology, applied in the field of video coding, can solve the problems of low video coding efficiency and inability to adapt to multi-scene characteristics of video

Active Publication Date: 2018-03-20
BEIJING KINGSOFT CLOUD NETWORK TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although, using the above method, the control is relatively simple for the encoder, but it cannot adapt well to the multi-scene characteristics of the video, and the video encoding efficiency is low

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  • Long-term reference image selection method and device

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Embodiment Construction

[0136] 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, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0137] In order to improve video coding efficiency, embodiments of the present invention provide a method and device for selecting a long-term reference image.

[0138] A method for selecting a long-term reference image provided by an embodiment of the present invention is firstly introduced below.

[0139] It should be noted that the long-term reference image refers to the decoded image that has been resident in the long-term reference image buffer during the vide...

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Abstract

The embodiment of the invention discloses a long-term reference image selection method and device. The method includes the following steps: obtaining a target attribute value of a predetermined imageattribute of an image to be encoded, wherein the image to be encoded is an image in a target video; determining whether the target attribute value is a preset attribute value; in the case that the target attribute value is the preset attribute value, judging whether the image to be encoded meets a determination condition of a long-term reference image according to a first data relationship, wherein the first data relationship is regarded as the data relationship between the image to be encoded and similar images or the data relationship between the similar images, and the similar images are afirst preset number of frame images before the image to be encoded and / or a second preset number of frame images after the image to be encoded in an image sequence of the target video obtained according to a preset sorting mode; and if yes, generating a reconstructed image corresponding to the image to be encoded, and determining the reconstructed image as the long-term reference image. Accordingto the scheme, the video coding efficiency can be improved.

Description

technical field [0001] The present invention relates to the technical field of video coding, in particular to a method and device for selecting a long-term reference image. Background technique [0002] With the continuous development of video services in multimedia applications and the continuous improvement of video cloud computing requirements, the existing network transmission bandwidth and storage resources are becoming more and more difficult to support the original video source with a large amount of data. One of the hotspots of research and application at home and abroad. [0003] Standardization organizations at home and abroad have formulated a variety of video coding standards. Most of these standards use techniques such as prediction, transformation, scanning, quantization, and entropy coding to remove redundant information in video image data to reduce transmission bandwidth and storage space. Among them, prediction technology is divided into intra-frame predic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/513H04N19/577H04N19/573
CPCH04N19/513H04N19/573H04N19/577
Inventor 张贤国朱政金星
Owner BEIJING KINGSOFT CLOUD NETWORK TECH CO LTD
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