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Video encoding and decoding method based on surface transmission transformation

A transmissive transformation and video coding technology, which is applied in the field of video coding and decoding based on surface transmissive transformation, can solve problems such as the difficulty in eliminating the correlation of similar image content, and achieve the effect of eliminating correlation and improving efficiency

Active Publication Date: 2018-08-24
ANHUI UNIVERSITY
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Problems solved by technology

[0005] The purpose of the present invention is to provide a video encoding and decoding method based on surface transmission transformation, which solves the problem that it is difficult to eliminate the correlation between deformed similar image contents, and then greatly improves the efficiency of encoding / decoding

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  • Video encoding and decoding method based on surface transmission transformation
  • Video encoding and decoding method based on surface transmission transformation
  • Video encoding and decoding method based on surface transmission transformation

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Embodiment Construction

[0042] 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.

[0043] see figure 1 and 2 As shown, the present invention is a video encoding and decoding method based on surface transmission transformation, comprising the following steps:

[0044] S1. At the encoding end, input the image to be encoded, detect the vanishing points in the image to be encoded, select three vanishing points and record them as vp i,vp j ,vp k , each vanishing point is represented by three-dimensional homogeneous coordinates;

[0...

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Abstract

The invention discloses a video encoding and decoding method based on surface transmission transformation, including the following steps: performing vanishing point detection on an image to be encoded; forming a normal vector of a plane according to parallel lines corresponding to vanishing points, and calculating a perspective transformation matrix Hm of the plane; at an encoding end, searching for an optimal matching block in a reconstructed image region, setting a motion vector that identifies a candidate position, and performing surface transmission transformation; obtaining coordinates ofpredicted pixels; at a decoding end, inputting a code stream to be decoded, and parsing the perspective transformation matrix; parsing the motion vector from the code stream, and performing surface transmission transformation; and obtaining the coordinates of the predicted pixels. According to the video encoding / decoding method based on surface transmission transformation disclosed by the invention, by performing surface transmission transformation on the motion vector, the predicted pixel coordinates can be obtained, the correlation between similar image contents represented as the deformation can be eliminated, the encoding / decoding efficiency can be greatly improved, and the scheme of the invention can be applied to H.264 / H.265 / H.266 and other encoding methods.

Description

technical field [0001] The invention belongs to the technical field of video compression coding and decoding, and relates to a video coding and decoding method based on surface transmission transformation. Background technique [0002] Intra prediction mainly predicts the current coding block through the information inside the image. This idea was first adopted by the MPEG-4 standard and expanded and extended in H.263++. In H.264 / AVC, it was The design is more refined, specifically including 4x4 block intra-frame prediction of 9 prediction modes, 16x16 block intra-frame prediction of 4 prediction modes, and 8x8 chroma block intra-frame prediction of 4 prediction modes. However, HEVC has 35 intra-frame prediction modes, with more precise directions and higher efficiency. However, these intra-frame prediction methods are all obtained through extrapolation of the surrounding boundary pixels of the current coding block, and only eliminate the correlation between the coding bloc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/139H04N19/159H04N19/182H04N19/52
CPCH04N19/139H04N19/159H04N19/182H04N19/52
Inventor 徐加飞杨超李透王啟军
Owner ANHUI UNIVERSITY
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