CHEN Gang,LIU Yan,YANG He-chao,et al.Adaptive brightness correction of dim-lightening color images[J].Optics and Precision Engineering,2021,29(08):1999-2007.
To improve the imaging performance in dim-lighting scenes, we propose adaptive brightness correction of dim-lighting color images. First, frame-averaging and Gamma correction are performed on a sequence of images. Second, the processed images are grouped before the following parallel processing steps are performed. In one of these steps, the images are converted into the YUV color space, and then, based on blind source separation (BSS), noise is removed from Y-channel components group by group; in another step, the best BSS-denoised Y-channel component is selected by matching with the frame-averaged Y-channel. Third, the best Y-channel component is adjusted based on the peel growth curve and then recombined with the averaged U-channel and V-channel components. Finally, the recombined image is converted back to the RGB color space. Experiment results show that the proposed image enhancement algorithm could increase the brightness of the low-luminosity image by 3.5-54.4 times and increase the information entropy by 1.3-2.9 times. The proposed algorithm outperforms the classical image enhancement algorithms in terms of noise reduction, brightness balancing, and color information restoration.
WANG Z J , LUO Y Y , JIANG SH Z , et al . Adaptive improved infrared image enhancement algorithm based on guided filtering [J]. Spectroscopy and spectral analysis , 2020 , 40 ( 11 ): 3463 - 3467 . (in Chinese)
LI M D , LIU J Y , YANG W H , et al . Structure-revealing low-light image enhancement via robust retinex model [J]. IEEE Transactions on Image processing , 2018 , 27 ( 6 ) : 2828 - 2841 .
DONG X , WANG G , PANG Y , et al . Fast efficient algorithm for enhancement of low lighting video [C]. 2011 IEEE International Conference on Multimedia and Expo. IEEE , 2011 : 1 - 6 .
GUO X , LI Y , LING H . LIME: Low-light image enhancement via illumination map estimation [J]. IEEE Transactions on image processing , 2016 , 26 ( 2 ): 982 - 993 .
LIU ZH CH , WANG D W , LIU Y , et al . Adaptive correction algorithm for uneven illumination image based on two-dimensional gamma function [J]. Journal of Beijing University of technology , 2016 , ( 2 ): 191 - 196+214 . (in Chinese)
ZOHAIR A . Nighttime image enhancement using a new illumination boost algorithm [J]. IET Image Processing , 2019 , 13 ( 8 ) : 1314 - 1320 .
YEREDOR A . Blind separation of Gaussian sources via second-order statistics with asymptotically optimal weighting [J]. IEEE Signal Processing Letters , 2000 , 7 ( 7 ): 197 - 200 .
TIAN H J , CAI M P , GUANN TAO , et al . Research on Retinex Low-illumination Image Enhancement Based on YCbCr color space [J]. Acta Photonica Sinica , 2020 , 49 ( 2 ): 173 - 184 . (in Chinese)
SHEN F , LI H L , SUN B , et al . Blind source separation and noise reduction of X-ray image sequences based on Anscombe transform [J]. Opt. Precision Eng. , 2020 , 28 ( 1 ): 244 - 250 . (in Chinese)
LIU B , XIAO H , YI C C . Blind separation method of single channel signal based on second-order blind identification based on kernel function [J]. Mechanical strength , 2018 , 40 ( 5 ): 1043 - 1049 . (in Chinese)
WANG J J , CHEN P , ZHENNG N N , et al . Associations between MSE and SSIM as cost functns in linear decomposition with application to bit allocation for sparse coding [J]. Neurocomputing , 2021 , 422 : 139 - 149 .
JIN-SAN K , KI-DOO K . Dynamic Range Enhancement Using New MSF Image and CLAHE . 2020 , 45 ( 2 ): 264 - 273 .
LI Y F , JIANG Y , CHEN N N , et al .. Color Fusion of Night Vision Images under RGB Color Space [J]. Opt. Precision Eng. , 2018 , 26 ( 11 ): 2795 - 2804 . (in Chinese)
MITTAL A , MOORTHY A K , BOVIK A C . No-reference image quality assessment in the spatial domain [J]. IEEE Transactions on image processing , 2012 , 21 ( 12 ): 4695 - 4708 .