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Proceedings Paper

The qualitative analyses of cloud cover on optical satellite image
Author(s): Chih-Heng Liu; Mei-Ling Yeh; Tine-Yin Chou; Lung-Shih Yang
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Paper Abstract

The remote sensing technology has become the important information source in environment investigation, Moreover, optical satellite images are the most important information source. Although the optical satellite images may provides high resolution, multi-spectral images and better vision images than active satellite, the disadvantage is affected by the atmospheric condition easily. In general, the cloud cover is the most common noise, may decrease the image information abundantly and has impact on the environmental monitoring application seriously. According to the cloud imaging model, add defilade manually with different reflection coefficient to simulate different thickness of cloud. Then utilize GIS analytical method and cooperate with histogram calculation to extraction different reflection coefficients boundary. In this research, we get the upper threshold limitation value for haze and lower threshold limitation value for thick heavy cloud. So, we change the classification level from 2 ordinal levels into 3 qualitative levels. We change the thick and haze cover classification into threshold limitation value heavy, haze and fuzzy could cover classification by using the Formosat-2 satellite images. Make use of therefore way, can change the description yardstick into the quantitative yardstick that is we change the ordinal scale into interval scale in the image of cloud cover efficiency.

Paper Details

Date Published: 7 November 2008
PDF: 9 pages
Proc. SPIE 7147, Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Classification of Remote Sensing Images, 714716 (7 November 2008); doi: 10.1117/12.813243
Show Author Affiliations
Chih-Heng Liu, Feng Chia Univ. (Taiwan)
Mei-Ling Yeh, Feng Chia Univ. (Taiwan)
Tine-Yin Chou, Feng Chia Univ. (Taiwan)
Lung-Shih Yang, Feng Chia Univ. (Taiwan)

Published in SPIE Proceedings Vol. 7147:
Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Classification of Remote Sensing Images
Lin Liu; Xia Li; Kai Liu; Xinchang Zhang, Editor(s)

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