TY  - JOUR
AU  - Wang, Wencheng
AU  - Yin, Baoxin
AU  - Li, Lei
AU  - Li, Lun
AU  - Liu, Hongtao
PY  - 2025
TI  - A Low Light Image Enhancement Method Based on Dehazing Physical Model
JO  - Computer Modeling in Engineering & Sciences
SN  - 1526-1492
SP  - 1595
EP  - 1616
VL  - 143
IS  - 2
AB  - In low-light environments, captured images often exhibit issues such as insufficient clarity and detail loss, which significantly degrade the accuracy of subsequent target recognition tasks. To tackle these challenges, this study presents a novel low-light image enhancement algorithm that leverages virtual hazy image generation through dehazing models based on statistical analysis. The proposed algorithm initiates the enhancement process by transforming the low-light image into a virtual hazy image, followed by image segmentation using a quadtree method. To improve the accuracy and robustness of atmospheric light estimation, the algorithm incorporates a genetic algorithm to optimize the quadtree-based estimation of atmospheric light regions. Additionally, this method employs an adaptive window adjustment mechanism to derive the dark channel prior image, which is subsequently refined using morphological operations and guided filtering. The final enhanced image is reconstructed through the hazy image degradation model. Extensive experimental evaluations across multiple datasets verify the superiority of the designed framework, achieving a peak signal-to-noise ratio (PSNR) of 17.09 and a structural similarity index (SSIM) of 0.74. These results indicate that the proposed algorithm not only effectively enhances image contrast and brightness but also outperforms traditional methods in terms of subjective and objective evaluation metrics.
UR  - https://doi.org/10.32604/cmes.2025.063595
DO  - 10.32604/cmes.2025.063595