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Resolution variable video encoding and decoding method based on regions

A video encoding and decoding technology, which is applied in the field of video decoding with variable resolution, can solve the problem of unsatisfactory removal of redundant information, achieve the effect of removing visual redundancy and improving the efficiency of video encoding and decoding

Active Publication Date: 2010-10-06
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above-mentioned video codec standards based on the traditional hybrid video codec framework are not very effective in removing visual redundant information.

Method used

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  • Resolution variable video encoding and decoding method based on regions
  • Resolution variable video encoding and decoding method based on regions
  • Resolution variable video encoding and decoding method based on regions

Examples

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Embodiment 1

[0032] A region-based video coding system with variable resolution, the current image to be coded is [a j，j ] 2m×2n , dividing it into [a k，l ] m×2n and [a y，x ] m×2n Two regions, where k ∈ [0, m-1], 1 ∈ [0, 2n-1], y ∈ [m, 2m-1], x ∈ [0, 2n-1], [a k，l ] m×2n is the high-resolution area, [a y，x ] m×2n is a low-resolution area, therefore, the starting position coordinates of the high-resolution area in the image to be encoded are (0, 0), the size of the high-resolution area is m×2n, and the above-mentioned area division information is encoded . Then, the image to be encoded is [a i，j ] 2m×2n According to the interval sampling rule, it is divided into [a o，2p ] 2m×n and [a o，2p+1 ] 2m×n two subsets, such as figure 1 Shown, among them, o∈[0,2m-1], p∈[0,n-1], [a o，2p ] 2m×n is the first subset, [a o，2p+1 ] 2m×n is not the first subset. Encode the first subset to get the first subset [a o，2p ] 2m×n The decoded reconstruction value of [a o，2p '] 2m×n ; for hig...

Embodiment 2

[0035] A region-based video decoding system with variable resolution, the current image to be decoded is [a i，j ] 2m×2n , by parsing the area division information obtained from the code stream, the starting position coordinates of the high-resolution area in the image to be decoded are (0, 0), and the size of the high-resolution area is m×2n, thus determining The image to be decoded [a i，j ] 2m×2n divided into [a k，l ] m×2n and [a y，x ] m×2n Two regions, where k ∈ [0, m-1], 1 ∈ [0, 2n-1], y ∈ [m, 2m-1], x ∈ [0, 2n-1], [a k，l ] m×2n is the high-resolution area, [a y，x ] m×2n is a low-resolution area, and at the same time, the image to be encoded is [a i，j ] 2m×2n According to the interval sampling rule, it is divided into [a o，2p ] 2m×n and [a o，2p+1 ] 2m×n Two subsets, where, o ∈ [0, 2m-1], p ∈ [0, n-1], [a o，2p ] 2m×n is the first subset, [a o，2p+1 ] 2m×n is not the first subset. Decode the first subset to get the first subset [a o，2p ] 2m×n All pixel va...

Embodiment 3

[0041] The region-based variable-resolution video encoding and decoding system of implementation example 3 includes the region-based variable-resolution video coding system of implementation example 1 and the region-based variable-resolution video decoding system of implementation example 2 .

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Abstract

The invention discloses a variable video coding and decoding method based on the resolving capability of area; the variable video coding and decoding method based on the resolving capability of area is able to code the different areas in the pictures with different resolving capabilities, and utilizes high resolving capability coding to the concerned area, utilizes the low resolving capability coding to the non-concerned area, thereby effectively removing large visual redundancy existed in the picture and improving the efficiency of coding.

Description

technical field [0001] The present invention relates to the field of signal processing and communication, in particular, to an area-based variable-resolution video coding method and an area-based video decoding method with variable resolution. Background technique [0002] An important purpose of video coding is to compress the video signal to reduce the data volume of the video signal, thereby saving the storage space and transmission bandwidth of the video signal. On the one hand, the original video signal has a huge amount of data, which is the necessity of video coding and compression; on the other hand, there is a large amount of redundant information in the original video signal, which is the possibility of video coding and compression. These redundant information can be divided into spatial redundant information, temporal redundant information, data redundant information and visual redundant information. Among them, the first three kinds of redundant information only...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/32H04N19/167H04N19/59
Inventor 虞露王建鹏
Owner ZHEJIANG UNIV
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