Single image dehazing via multi‐scale gradient domain contrast enhancement. Issue 3 (1st March 2016)

• Record Type: Journal Article
• Authors: Mi, Zetian; Zhou, Huan; Zheng, Yijun; Wang, Minghui
• Is Part Of: IET image processing. Volume 10:Issue 3(2016)
• Page Start: 206
• Page End: 214
• Publication Date: 2016-03-01
• Subjects: image colour analysis -- image enhancement -- gradient methods; single image dehazing -- multiscale gradient domain contrast enhancement -- bad weathers -- visibility improvement -- hazy image degradation -- image colour compensation -- image contrast compensation; Image processing -- Periodicals; 621.36705
• DOI: 10.1049/iet-ipr.2015.0112
• Languages: English
• ISSNs: 1751-9659

Abstract

Abstract : Outdoor images captured under bad weathers often suffer from low visibility. In this study, a novel method is presented to improve the visibility of a single input hazy image. On the basis of the observation that degradation of a hazy image occurs both in contrast and colour, the authors method aims at compensating the contrast and colour of the image, respectively. To achieve this, they propose a multi‐scale gradient domain contrast enhancement approach that handles the different residual images rather than the entire image, and correct the attenuation of colour according to the estimated transmission. Since there is no need to recover the scene radiance by the degradation model, their method depends less on the accuracy of transmission and does not require the estimation of atmospheric light. Experiments on a variety types of hazy images show that their method yields accurate results with fine details and vivid colour, even better than other state‐of‐the‐art dehazing methods.