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Non-uniform illumination endoscopic imaging enhancement via anti-degraded model and L 1 L 2-based variational retinex

In this paper, we propose a novel image enhancement algorithm via anti-degraded model and L 1 L 2-based variational retinex (AD-L 1 L 2VR) for non-uniform illumination endoscopic images. Firstly, a haze-free endoscopic image is obtained by an anti-degraded model named dark channel prior (DCP). For getting a more accurate transmission map, it is refined by using a guided image ...

Mission-critical monitoring based on surround suppression variational Retinex enhancement for non-uniform illumination images

Zhitao Rao 0 Tingfa Xu 0 Hongqing Wang 0 0 School of Optoelectronics, Image Engineering andVideo Technology Lab, Beijing Institute of Technology , Beijing 100081 , China In this letter, a surround