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Single Image Dehazing Algorithm Based on Sky Region Segmentation

  • Weixiang LiEmail author
  • Wei JieEmail author
  • Somaiyeh MahmoudzadehEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11888)

Abstract

In this paper a hybrid image defogging approach based on region segmentation is proposed to address the dark channel priori algorithm’s shortcomings in de-fogging the sky regions. The preliminary stage of the proposed approach focuses on segmentation of sky and non-sky regions in a foggy image taking the advantageous of Meanshift and edge detection with embedded confidence. In the second stage, an improved dark channel priori algorithm is employed to defog the non-sky region. Ultimately, the sky area is processed by DehazeNet algorithm, which relies on deep learning Convolutional Neural Networks. The simulation results show that the proposed hybrid approach in this research addresses the problem of color distortion associated with sky regions in foggy images. The approach greatly improves the image quality indices including entropy information, visibility ratio of the edges, average gradient, and the saturation percentage with a very fast computation time, which is a good indication of the excellent performance of this model.

Keywords

Image haze removal Atmospheric scattering model Regional segmentation Dark channel prior DehazeNet 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Nanjing Tech UniversityNanjingChina
  2. 2.Deakin UniversityGeelongAustralia

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