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Volume: 16 | Article ID: art00065_2
Gamma Transformation by Sigmoid Function in Digital Camera System
DOI : 10.2352/ISSN.2169-4451.2000.16.1.art00065_2 Published Online : January 2000
Abstract
In a imaging system such as digital still camera, gamma transformation is important, because of the difference of dynamic range between natural scene and printer. We propose gamma transformation by sigmoid function adjusted by the peak position of histogram of lightness level. It is confirmed that the sigmoid transformation increases the clearness of image.
Journal Title : NIP & Digital Fabrication Conference
Publisher Name : Society of Imaging Science and Technology
Publisher Location : 7003 Kilworth Lane, Springfield, VA 22151, USA
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Cite this article
Takashi Watanabe, Yasushi Hoshino, "Gamma Transformation by Sigmoid Function in Digital Camera System" in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP16), 2000, pp 678 - 681, https://doi.org/10.2352/ISSN.2169-4451.2000.16.1.art00065_2
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Copyright © Society for Imaging Science and Technology 2000