Share Email Print

Proceedings Paper

Bilateral filtering and adaptive tone-mapping for qualified edge and image enhancement
Author(s): Kuo-Jui Hu; Ting-Ting Chang; Min-Yao Lu; Wu-Jeng Li; Jih-Fon Huang
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Most of high-contrast images are common with dark and bright area. It is difficult to present the detail on both dark and high light areas on display devices. In order to resolve this problem, we proposed a method of image enhancement to improve this image quality and used bilateral filter to keep the detail. In paper, we applied an appropriate algorithm to process images. At first, we use bilateral filter to separate image. One is large scale image and the other is detail image. Second, we made large scale image which was translated into histogram. In order to make the images divided into three stairs, such as lightness, middle-tone and darkness region. We decided two optimal threshold parameters. Finally, according to three images we use different tone-mapping method to process each stair. The tone-mapping method includes adaptive s-curve and gamma curve algorithms. The experiment results of this study revealed image detail and enhancement. To avoid contour phenomenon is in lightness region.

Paper Details

Date Published: 19 January 2009
PDF: 8 pages
Proc. SPIE 7241, Color Imaging XIV: Displaying, Processing, Hardcopy, and Applications, 724112 (19 January 2009); doi: 10.1117/12.808063
Show Author Affiliations
Kuo-Jui Hu, Industrial Technology Research Institute (Taiwan)
Ting-Ting Chang, Industrial Technology Research Institute (Taiwan)
Min-Yao Lu, Industrial Technology Research Institute (Taiwan)
Wu-Jeng Li, Industrial Technology Research Institute (Taiwan)
Jih-Fon Huang, Industrial Technology Research Institute (Taiwan)

Published in SPIE Proceedings Vol. 7241:
Color Imaging XIV: Displaying, Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu; Shoji Tominaga; Alessandro Rizzi, Editor(s)

© SPIE. Terms of Use
Back to Top