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Video reference frame management method and system

A reference frame and video technology, applied in the video field, can solve problems such as low coding efficiency and achieve the effect of improving coding efficiency

Active Publication Date: 2017-03-08
GUANGDONG VIMICRO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] In view of this, the embodiment of the present invention provides a video reference frame management method and system, which solves the problem of low coding efficiency in the existing video coding technology

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  • Video reference frame management method and system

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Embodiment Construction

[0024] 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 creative efforts fall within the protection scope of the present invention.

[0025] figure 2 What is shown is a schematic flowchart of a video reference frame management method provided by an embodiment of the present invention. Such as figure 2 As shown, taking luminance coding as an example, the steps of the video reference frame management method in the first embodiment of the present invention are as follows:

[0026] Step 01, the initialization of the reference frame image list, and the reference frames are preliminar...

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Abstract

The embodiment of the invention provides a video reference frame management method and system. The method comprises the following steps: initializing a reference frame image list, and primarily sorting reference frames by basic parameters; resorting the reference frame image list, and resorting the reference frames by the basic parameters in combination with additional parameters. By adoption of the video reference frame management method and system provided by the embodiment of the invention, the problem that the reference frames are only sorted according to the reference frames and the poc difference of the current frame, resulting in low encoding efficiency in the prior art is solved. According to the video reference frame management method and system provided by the embodiment of the invention, weight calculation is performed on the QP values of the reference frames and the poc differences of the reference frames and the current frame to obtain resorting sequence numbers, resorting is performed, and the image quality problem of the reference frames is fully considered in the resorting process, so the encoding efficiency is improved.

Description

technical field [0001] The present invention relates to the field of video technology, in particular to a video reference frame management method and system. Background technique [0002] Coded pictures are classified into three types: I-frames, P-frames, and B-frames. The pictures used to predict the coded pictures are called reference frames. Among them, the I frame is an intra-coded frame, which does not need to refer to other frames, and uses the spatial correlation of the video image to perform independent compression coding. The P frame is a forward prediction frame, and the I frame is used as a reference frame to find out the prediction value and motion vector of a "certain point" in the P frame in the I frame, and transmit the prediction difference and the motion vector together. B frame is a two-way interpolation frame, using the previous I or P frame and the following P frame as reference frames, "find" the predicted value and two motion vectors of "a certain poi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/105H04N19/154H04N19/50H04N19/573
CPCH04N19/105H04N19/154H04N19/50H04N19/573
Inventor 胡建华夏昌盛昝劲文周文博
Owner GUANGDONG VIMICRO