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Anti-blocking effect image video enhancement method

A video enhancement and block effect technology, applied in the field of computer vision and image enhancement, can solve the problem of ineffective removal of block artifacts

Active Publication Date: 2021-01-12
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can effectively reduce the blocky artifacts caused by block-based transform coding at low bit rates in compressed images, but it cannot effectively remove the blocky artifacts that are amplified after enhancement processing

Method used

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  • Anti-blocking effect image video enhancement method

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Embodiment Construction

[0047] The following embodiments describe the present invention in detail in conjunction with the accompanying drawings.

[0048] This embodiment describes the specific implementation process of an anti-blocking image and video enhancement method of the present invention, including the following steps:

[0049] S1, in order to adapt to the image compression process, the low-illuminance compressed image I RGB Convert from RGB color space to YUV color space to get low-light compressed image I YUV . Among them, the low-illuminance compressed image I YUV Including three channel components, where the brightness Y component is represented as I Y , The chroma U component is expressed as I U , the chromaticity V component is expressed as I V .

[0050] S2, use the U-net neural network to analyze the brightness component I Y To estimate the incident illuminance of the environment, the U-net neural network uses a residual connection method, and the estimate of the incident illumi...

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Abstract

The invention discloses an anti-blocking effect image video enhancement method, and belongs to the field of computer vision and image enhancement. According to the method, firstly, color space conversion is carried out on a compressed image or a video frame, the possible position and intensity of the block effect of a coding block are learned through a neural network in combination with an image or video coding model, adaptive adjustment is carried out on the enhanced intensity, and while the image and the video are effectively enhanced, the coding effect is improved. The blocking effect possibly amplified by the enhancement algorithm is inhibited or eliminated, and the visual impression and the subsequent processing quality of the enhanced image are improved.

Description

technical field [0001] The invention belongs to the fields of computer vision and image enhancement, and relates to a method for suppressing block effects in the process of encoding compressed images or video frame enhancement. Background technique [0002] Images and videos are the main information channels for people to perceive scenes and targets, and they are also indispensable sources of information in intelligent monitoring, automated production lines and computer vision applications. Therefore, the observation quality of image and video is particularly important for the acquisition and processing of information. In practical applications, due to the limitations and influences of various objective conditions, the obtained images and videos cannot satisfy visual observation and processing well, and necessary enhanced preprocessing is required to obtain better use effects. Among them, the processing of low-illuminance image and video is the most prominent problem in thi...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T7/90G06T9/00
CPCG06T7/90G06T9/00G06T2207/10024G06T2207/10016G06T2207/20172G06T5/70
Inventor 王正宁曾仪曾浩刘怡君彭大伟奚伟航
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA