Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:A4
Session:
Number:A4-3
Image Dynamic Range Compression by Combining Gamma-Corrected Images
Young Seok Han, Moon Gi Kang,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
A dynamic range compression technique is necessary for displaying high dynamic range images on display devices having low dynamic range. This paper presents a new dynamic range compression method using gamma corrections. Gamma corrections with different gamma coefficients are first applied to the observed image to generate several candidate images. Then, the proposed method produces the result image by adequately combining them according to the weight functions based on local variances. The local variances are used as local weights to bring out the detailed information. Experimental results demonstrate that the proposed method compresses the dynamic ranges of images by bringing out the details not only in dark region but also in bright region.