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Block-based self-adaptive super-resolution video processing method and system

A video processing and super-resolution technology, which is applied in the fields of digital video signal modification, television, electrical components, etc., can solve the problem of video coding quality reduction, and achieve the effect of improving coding performance, reducing complexity, and improving subjective and objective quality.

Active Publication Date: 2012-04-11
PEKING UNIV
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Problems solved by technology

However, in the case of limited bandwidth, the network can only transmit low-bit-rate video encoding signals
The general method is to reduce the bit rate only by adjusting the quantization parameters, which will inevitably lead to the reduction of video coding quality

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  • Block-based self-adaptive super-resolution video processing method and system
  • Block-based self-adaptive super-resolution video processing method and system
  • Block-based self-adaptive super-resolution video processing method and system

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Embodiment Construction

[0034] In order to make the above objects, features and advantages of the present invention more comprehensible, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] The basic idea of ​​the present invention: use image characteristics to select a suitable down-sampling mode and corresponding reconstruction method, encode the down-sampled video image blocks, and up-sample and reconstruct the original resolution image blocks during decoding, so as to improve the encoding and compression performance Purpose.

[0036] refer to figure 1 , figure 1 It is a flow chart of the steps of the block-based adaptive super-resolution video processing method according to the present invention, including the following steps:

[0037] Step 110, select a block-based down-sampling mode for the video image.

[0038] Step 120: Down-sampling the current video image according to...

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Abstract

The invention discloses block-based self-adaptive super-resolution video processing method and system. The method comprises the following steps of: selecting a block-based down-sampling mode for a video image; carrying out down-sampling on the current video image according to the down-sampling mode and acquiring a down-sampling block; selecting a basis rate anamorphic coding mode by combining a block coding forecasting mode and the down-sampling mode to code the acquired down-sampling block; decoding the coded down-sampling block, acquiring a decoded down-sampling block, carrying out type division on the decoded down-sampling block and carrying out up-sampling on the down-sampling block on the basis of the type of the down-sampling block to acquire an up-sampling reestablishment block. The invention can improve the compression efficiency of a vide code at a middle and low code rate and ensure that the code performance is not lower than the performance of the traditional mixed code at a high code rate at the same time.

Description

technical field [0001] The invention relates to the fields of data compression and image processing, in particular to a block-based adaptive super-resolution video processing method and system. Background technique [0002] With the development of network and communication technology, more and more video signals need to be transmitted through the network. However, in the case of limited bandwidth, the network can only transmit low-bit-rate video encoding signals. In a general method, the bit rate is reduced only by adjusting quantization parameters, which will inevitably lead to a reduction in video coding quality. Therefore, improving the quality of video coding signals at low bit rates has received more and more attention. The development of super-resolution technology provides a feasible method to solve this problem. Super-resolution technology refers to the use of non-redundant information between low-resolution images with sub-pixel displacement in multiple frames to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/50H04N19/103H04N19/147H04N19/59
Inventor 马思伟张莉张新峰高文
Owner PEKING UNIV
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