- 期刊
- OpenAccess
Investigation of Urban Atmospheric Visibility Using Haar Wavelet Transform
並列摘要
A method of image processing, Haar wavelet transform, was first applied to establish a new index and provide accurate digital data to present urban atmospheric visibility, instead of the conventional observing method. Digital images of urban areas in Kaohsiung, a city at the south of Taiwan, are analyzed according to brightness (gray level). An index value for a scene image is calculated with a processor of Haar wavelet transform. As a result, a good correlation between the wavelet index values and the visual range values estimated by three trained observers is affirmed by the correlation coefficient (R^2) of 0.81. Convenient transmission and the exchangeability of digital images of the real-time landscape facilitate the demonstration of the results on the web site.
延伸閱讀
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