4.6 Article

Multicolor Light Attenuation Modeling for Underwater Image Restoration

期刊

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JOE.2023.3275615

关键词

Background light; light attenuation; multicolor components; scene depth estimation; underwater image restoration

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This study presents a novel underwater image restoration technique called the multicolor components and light attenuation (MCLA) method. It effectively eliminates color casts and enhances details through adaptive background light estimation and depth-map estimation. The MCLA method improves brightness, visibility, color correction accuracy, and detail restoration in underwater images.
The unique physical properties of underwater environments often lead to color distortion, reduced visibility, and loss of detail in underwater images. To address these challenges, we present a novel underwater image restoration technique, known as the multicolor components and light attenuation (MCLA) method. Initially, we introduce an adaptive background light estimation for underwater image restoration (BLEU) approach, utilizing multicolor model conversion to effectively eliminate color casts while minimizing interference from white objects and suspended particles. Following this, we propose a cutting-edge depth-map estimation model grounded in feature priors, which serves to enhance details and restore textures. We then adjust the red channel with a shorter wavelength to correct the depth map and compute the transmission map based on the Lambert-Beer law. Ultimately, by leveraging the obtained background light and transmission map, we can generate clear underwater images using the inverted underwater optical imaging model. The MCLA method not only improves brightness and visibility, but also removes color casts, boosts contrast, enriches details, and reduces artifacts. Experimental results on the widely used UIEB benchmark demonstrate the superiority of MCLA over state-of-the-art techniques in both subjective and objective evaluations. Moreover, our approach exhibits enhanced performance in color correction accuracy and detail and texture restoration.

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