Title
Hazy Image Restoration by Bi-Histogram Modification
Abstract
Visibility restoration techniques are widely used for information recovery of hazy images in many computer vision applications. Estimation of haze density is an essential task of visibility restoration techniques. However, conventional visibility restoration techniques often suffer from either the generation of serious artifacts or the loss of object information in the restored images due to uneven haze density, which usually means that the images contain heavy haze formation within their background regions and little haze formation within their foreground regions. This frequently occurs when the images feature real-world scenes with a deep depth of field. How to effectively and accurately estimate the haze density in the transmission map for these images is the most challenging aspect of the traditional state-of-the-art techniques. In response to this problem, this work proposes a novel visibility restoration approach that is based on Bi-Histogram modification, and which integrates a haze density estimation module and a haze formation removal module for effective and accurate estimation of haze density in the transmission map. As our experimental results demonstrate, the proposed approach achieves superior visibility restoration efficacy in comparison with the other state-of-the-art approaches based on both qualitative and quantitative evaluations. The proposed approach proves effective and accurate in terms of both background and foreground restoration of various hazy scenarios.
Year
DOI
Venue
2015
10.1145/2710024
ACM Transactions on Intelligent Systems and Technology
Keywords
Field
DocType
Design,Algorithms,Visibility restoration,transmission map,haze density
Density estimation,Histogram,Computer vision,Visibility,Quantitative Evaluations,Computer science,Artificial intelligence,Image restoration,Depth of field,Haze,Information recovery
Journal
Volume
Issue
ISSN
6
4
2157-6904
Citations 
PageRank 
References 
9
0.47
19
Authors
3
Name
Order
Citations
PageRank
Bo-Hao Chen124421.00
Shih-Chia Huang265742.31
Jian-Hui Ye3311.62