光学精密工程2025，Vol.33Issue(11)：1722-1738,17.DOI:10.37188/OPE.20253311.1722
基于透射率限制修正的水下偏振图像恢复
Underwater polarization image restoration based on transmittance-limiting correction
摘要
Abstract
To address errors in transmittance estimation,an underwater polarization image restoration method based on transmittance-limiting correction is proposed.Initially,a coarse correction of the trans-mittance parameters is applied to suppress noise,thereby reducing interference in target imaging.Subse-quently,a fine adjustment of the transmittance parameters is performed to enhance contrast and improve estimation accuracy.The corrected transmittance is then integrated into the underwater transmission mod-el to produce the restored image.An independently developed underwater active illumination imaging ex-perimental device was employed to conduct restoration experiments on various targets in waters of differ-ing turbidity levels.Experimental results demonstrate that the proposed method improves information en-tropy and contrast indices by averages of 33.89%and 69.01%,respectively,compared to the original im-ages.Additionally,it outperforms other algorithms with respect to average gradient,signal-to-noise ratio,and information entropy.Target details were significantly recovered in turbid waters of varying concentra-tions.Under active illumination conditions,effective restoration of underwater polarization images necessi-tates accurate acquisition of the backscattered degree of polarization and the light intensity at infinity.Rough estimations of these parameters may lead to transmittance errors,resulting in considerable noise and pixel saturation in the restored images.关键词
偏振成像/主动照明/水下目标图像恢复/透射率估计Key words
polarization imaging/active illumination/underwater target image restoration/transmittance estimation分类
数理科学引用本文复制引用
段锦,董克晗,王佳林,倪新宇,方瑞森,赵海丽..基于透射率限制修正的水下偏振图像恢复[J].光学精密工程,2025,33(11):1722-1738,17.基金项目
国家自然科学基金重大仪器专项(No.62127813) （No.62127813）
