Wavelength-Adaptive Dehazing Using Histogram Merging-Based Classification for UAV Imagesopen access
- Authors
- Yoon, Inhye; Jeong, Seokhwa; Jeong, Jaeheon; Seo, Doochun; Paik, Joonki
- Issue Date
- Mar-2015
- Publisher
- MDPI AG
- Keywords
- image dehazing; image defogging; image enhancement; unmanned aerial vehicle images; remote sensing images
- Citation
- SENSORS, v.15, no.3, pp 6633 - 6651
- Pages
- 19
- Journal Title
- SENSORS
- Volume
- 15
- Number
- 3
- Start Page
- 6633
- End Page
- 6651
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/9847
- DOI
- 10.3390/s150306633
- ISSN
- 1424-8220
1424-8220
- Abstract
- Since incoming light to an unmanned aerial vehicle (UAV) platform can be scattered by haze and dust in the atmosphere, the acquired image loses the original color and brightness of the subject. Enhancement of hazy images is an important task in improving the visibility of various UAV images. This paper presents a spatially-adaptive dehazing algorithm that merges color histograms with consideration of the wavelength-dependent atmospheric turbidity. Based on the wavelength-adaptive hazy image acquisition model, the proposed dehazing algorithm consists of three steps: (i) image segmentation based on geometric classes; (ii) generation of the context-adaptive transmission map; and (iii) intensity transformation for enhancing a hazy UAV image. The major contribution of the research is a novel hazy UAV image degradation model by considering the wavelength of light sources. In addition, the proposed transmission map provides a theoretical basis to differentiate visually important regions from others based on the turbidity and merged classification results.
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- Appears in
Collections - Graduate School of Advanced Imaging Sciences, Multimedia and Film > Department of Imaging Science and Arts > 1. Journal Articles
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