Abstract
In this paper, we propose a new sharpness enhancement algorithm for stereo images. Although the stereo image and its applications are becoming increasingly prevalent, there has been very limited research on specialized image enhancement solutions for stereo images. Recently, a binocular just-noticeable-difference (BJND) model that describes the sensitivity of the human visual system to luminance changes in stereo images has been presented. We introduce a novel application of the BJND model for the sharpness enhancement of stereo images. To this end, an overenhancement problem in the sharpness enhancement of stereo images is newly addressed, and an efficient solution for reducing the overenhancement is proposed. The solution is found within an optimization framework with additional constraint terms to suppress the unnecessary increase in luminance values. In addition, the reliability of the BJND model is taken into account by estimating the accuracy of stereo matching. Experimental results demonstrate that the proposed algorithm can provide sharpness-enhanced stereo images without producing excessive distortion.
| Original language | English |
|---|---|
| Article number | 6015551 |
| Pages (from-to) | 1191-1199 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Image Processing |
| Volume | 21 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2012 Mar |
Bibliographical note
Funding Information:Sung-Jea Ko (M’88–SM’97) received the B.S. de-gree in electronic engineering from Korea University, Seoul, Korea, in 1980 and the M.S. and Ph.D. degrees in electrical and computer engineering from the State University of New York at Buffalo, Buffalo, in 1986 and 1988, respectively. From 1988 to 1992, he was an Assistant Professor with the Department of Electrical and Computer En-gineering, University of Michigan-Dearborn, Dear-born. Since 1992, he has been with the Department of Electronic Engineering, Korea University, where he is currently a Professor. He has published over 140 international journal articles. He also holds over 50 patents registered on video signal processing and multimedia communications. Dr. Ko was the 1999 recipient of the LG Research Award given to the Outstanding Information Technology and Communication Researcher. He was also the recipient of the Best Paper Award from the IEEE Asia Pacific Conference on Circuits and Systems (1996), the Hae-Dong Best Paper Award from the Institute of Electronics Engineers of Korea (1997), and the research excellence award from Korea University (2004). He has served as a TPC member for the IEEE Conference on Consumer Electronics (ICCE) since 1997 and received a ten-year service award from the TPC of the ICCE in 2008. He is also a TPC member and an international advisor of ICCE-Berlin and a member of the editorial board of the IEEE TRANSACTIONS ON CONSUMER ELECTRONICS.
Funding Information:
Manuscript received April 11, 2011; revised July 12, 2011; accepted August 30, 2011. Date of publication September 08, 2011; date of current version February 17, 2012. This work was supported by the Midcareer Researcher Program through the National Research Foundation Grant funded by the Ministry of Education, Science, and Technology under Grant 2011-0000200. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Anthony Vetro.
Keywords
- Binocular just-noticeable difference (BJND)
- human visual system (HVS)
- image enhancement
- stereo image
ASJC Scopus subject areas
- Software
- Computer Graphics and Computer-Aided Design