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Journal of Applied Remote Sensing

New approach for dynamic range compression of remote sensing image using wavelet fusion
Author(s): Hung-Sen Wan; Chau-Yun Hsu; Lie-Tong Ma
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Paper Abstract

Most of the recent remote sensing sensors produce higher radiometric resolution than those display devices showing images. Therefore DRC (Dynamic Range Compression) is applied to accommodate original image with large bit-depth to the showing device with less bit-depth. Common stretch methods achieve the DRC with linear line or non-linear curve mapping. The linear stretch loses the details of the highest and lowest luminance area, and the non-linear stretch causes the color distortion issue after the fusion of panchromatic (Pan) and multi-spectrum (MS) image. This paper develops an approach to enhance unapparent features in the Pan image using wavelet fusion method which combine sub-images coming from the same original Pan image. Those sub-image formed by different stretch method for enhancing the radiometric visualization and keeping better correlation with the original color information. According to the experimental result, this approach can apply to not only the airborne but the spaceborne image to produce ideal pan-sharpened product.

Paper Details

Date Published: 1 July 2010
PDF: 14 pages
J. Appl. Remote Sens. 4(1) 043540 doi: 10.1117/1.3480577
Published in: Journal of Applied Remote Sensing Volume 4, Issue 1
Show Author Affiliations
Hung-Sen Wan, Tatung Univ. (Taiwan)
Chau-Yun Hsu, Tatung Univ. (Taiwan)
Lie-Tong Ma, Tatung Univ. (Taiwan)

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