Open AccessRestoration algorithm for noisy complex illumination
Author(s) -
Liu Zhanwen,
Gao Tao,
Kong Fanjie,
Jiao Ziheng,
Yang Aodong,
Li Shuying,
Liu Bo
Publication year - 2019
Publication title -
iet computer vision
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.38
H-Index - 37
eISSN - 1751-9640
pISSN - 1751-9632
DOI - 10.1049/iet-cvi.2018.5163
Subject(s) - color constancy , complex wavelet transform , artificial intelligence , computer science , image restoration , computer vision , entropy (arrow of time) , algorithm , pattern recognition (psychology) , noise (video) , wavelet , wavelet transform , image (mathematics) , image processing , mathematics , wavelet packet decomposition , physics , quantum mechanics
Although promising results have been achieved in the restoration of complex illumination images with the Retinex algorithm, there are still some drawbacks in the processing of Retinex. Considering the noise characteristics of complex illumination images, in this study, we propose a novel restoration algorithm for noisy complex illumination, which combines guided adaptive multi‐scale Retinex (GAMSR) and improvement BayesShrink threshold filtering (IBTF) based on double‐density dual‐tree complex wavelet transform (DDDTCWT) domain. Extensive restoration experiments are conducted on three typical types images and the same image with different noises. On the basis of a series of evaluation indexes, we compare our method to those of state‐of‐the‐art algorithms. The results show that (i) SSIM of the proposed IBTF is superior to traditional Bayes threshold method by 15% as the standard variance is 100. (ii) PSNR of the proposed GAMSR enhances 15% to traditional MSR. (iii) The clarity of final results for restoration speeds up three times than that of original images, and the information entropy is improved slightly too. Therefore, the proposed method can effectively enhance the details, edges and textures of the image under complex illumination and noises.