Research Papers

New approach for dynamic range compression of remote sensing image using wavelet fusion

[+] Author Affiliations
Hung-Sen Wan, Chau-Yun Hsu, Lie-Tong Ma

Tatung University, Graduate Institute of Communication Engineering, 40 Chung-Shan North Rd. Sec 3, Taipei, Taiwan 10451 Taiwan

J. Appl. Remote Sens. 4(1), 043540 (July 29, 2010). doi:10.1117/1.3480577
History: Received August 24, 2009; Revised July 9, 2010; Accepted July 14, 2010; July 29, 2010; Online July 29, 2010
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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.

© 2010 Society of Photo-Optical Instrumentation Engineers

Citation

Hung-Sen Wan ; Chau-Yun Hsu and Lie-Tong Ma
"New approach for dynamic range compression of remote sensing image using wavelet fusion", J. Appl. Remote Sens. 4(1), 043540 (July 29, 2010). ; http://dx.doi.org/10.1117/1.3480577


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