针对多退化类别恢复的盲超分方法与装置

By decomposing the image restoration process into three modules—noise feature suppression, texture feature enhancement, and sampling restoration—and compensating for different degradation types, this approach addresses the performance limitations of existing blind super-resolution algorithms in multi-degradation scenarios, achieving more efficient image restoration and texture detail enhancement.

CN116739904BActive Publication Date: 2026-07-17FIBERHOME TELECOMMUNICATION TECHNOLOGIES CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FIBERHOME TELECOMMUNICATION TECHNOLOGIES CO LTD
Filing Date
2023-07-06
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing blind super-resolution algorithms fail to specifically suppress the effects of different degradation types when dealing with various degradation types, leading to increased recovery difficulty and decreased performance, especially when dealing with image information loss caused by noise and blur kernels.

Method used

The image restoration process is decomposed into three modules: a noise feature suppression module, a texture feature enhancement module, and a sampling restoration module. The modules compensate for downsampling, blur kernel, and noise, respectively, and improve texture detail restoration through gradient weighted loss. A noise feature suppression module based on an attention mechanism and a densely connected texture feature enhancement module are designed.

Benefits of technology

It effectively improves the performance of the super-resolution model, enhances its robustness to image degradation processes in the real world, and improves the efficiency of image restoration and the reconstruction effect of texture details.

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Abstract

本发明公开一种针对多退化类别恢复的盲超分方法:使用随机退化核作为真实退化核,对高分辨率图像进行退化得到低分辨率图像;使用三个恢复模块分别对上述不同退化造成的信息损失进行补偿;噪声特征抑制模块通过注意力机制来抑制特征中噪声引起的高频信息,目标是学习低分辨率图像中噪声引起的原本图像信息损失,并通过特征残差对噪声特征进行补偿;纹理特征增强模块采用了类似稠密连接的网络结构来提取图像的模糊残差,被用来学习退化中由不同的模糊核造成的信息损失,并对其进行补偿;采样恢复模块通过学习高、低分辨率图像之间的特征残差,来恢复低分辨率图像所丢失的高分辨图像信息。本发明还提供了相应的针对多退化类别恢复的盲超分装置。
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