激光技术2025，Vol.49Issue(1)：33-40,8.DOI:10.7510/jgjs.issn.1001-3806.2025.01.006
基于多尺度双边滤波Retinex的非均匀光照散斑图像矫正
Non-uniform illumination speckle image correction based on multi-scale bilateral filtering Retinex
摘要
Abstract
In order to solve the problem of speckle image quality degradation caused by non-uniform lighting in the scene,which affects the testing accuracy of digital image correlation,the multi-scale bilateral filtering Retinex algorithm was used to perform optical correction on speckle images,achieving high-precision optical measurement of displacement and stress fields in non-uniform lighting scenes.Experiments were conducted to simulate sub-pixel displacement of speckle images and compared them with existing image optical correction algorithms,the corresponding speckle image displacement mean error,standard deviation,and quality evaluation index data were respectively obtained.The results show that the proposed algorithm has a good correction effect on non-uniform illumination speckle images,and the problems of image boundary blur and local overcorrection can be solved.The average grayscale gradient of the corrected speckle image increased from 12.986 to 14.574,and the displacement standard deviation decreased from 0.0443 to 0.0335.This method can effectively enhance the quality of speckle,ensure the testing accuracy and stability of digital image correlation methods in scenarios with uneven lighting,improve the testing accuracy of digital image correlation methods in complex lighting scenarios,and provide reference for non-contact measurement of lighting mutations in actual environments.关键词
图像处理/非均匀光照校正/双边滤波/Retinex算法/数字图像相关Key words
image processing/non-uniformillumination correction/bilateral filtering/Retinex algorithm/digital image cor-relation分类
数理科学引用本文复制引用
陈松,温宇鑫,安浩铭..基于多尺度双边滤波Retinex的非均匀光照散斑图像矫正[J].激光技术,2025,49(1):33-40,8.基金项目
贵州省科技支撑计划资助项目(黔科合支撑[2023]一般205) （黔科合支撑[2023]一般205）
贵州省基础研究计划自然科学基金资助项目(黔科合基础-ZK[2022]一般117) （黔科合基础-ZK[2022]一般117）
贵州大学人才引进项目(2020-026) （2020-026）
