Visibility enhancement via optimal gamma tone mapping for OST displays under ambient light

Kyu Ho Lee; Jae Woo Kim; Jong Ok Kim

doi:10.1109/ICIP.2017.8296325

Visibility enhancement via optimal gamma tone mapping for OST displays under ambient light

Kyu Ho Lee, Jae Woo Kim, Jong Ok Kim

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

Visibility of the overlaid virtual image is sensitively affected by surrounding illumination in OST (optical see-through) displays. Ambient light may especially deteriorate the visibility of low gray levels, whose luminance is comparable to ambient light. Therefore, we first derive a luminance model based on actual measurements under various ambient lights, and use this model to extract low gray-level region (LGR), which suffers severely from contrast loss. It was experimentally found that gamma tone mapping is the most appropriate for LGR contrast enhancement of OST displays. The gamma value is optimally determined by cost minimization. Visibility enhancement is verified by experiments on a practical setup with a variety of ambient light levels and images.

Original language	English
Title of host publication	2017 IEEE International Conference on Image Processing, ICIP 2017 - Proceedings
Publisher	IEEE Computer Society
Pages	470-474
Number of pages	5
ISBN (Electronic)	9781509021758
DOIs	https://doi.org/10.1109/ICIP.2017.8296325
Publication status	Published - 2017 Jul 2
Event	24th IEEE International Conference on Image Processing, ICIP 2017 - Beijing, China Duration: 2017 Sept 17 → 2017 Sept 20

Publication series

Name	Proceedings - International Conference on Image Processing, ICIP
Volume	2017-September
ISSN (Print)	1522-4880

Other

Other	24th IEEE International Conference on Image Processing, ICIP 2017
Country/Territory	China
City	Beijing
Period	17/9/17 → 17/9/20

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 2016R1A2B4012865).

Publisher Copyright:
© 2017 IEEE.

Keywords

Ambient light
Gamma tone mapping
Low gray-level region
OST display
Visibility enhancement

ASJC Scopus subject areas

Software
Computer Vision and Pattern Recognition
Signal Processing

Access to Document

10.1109/ICIP.2017.8296325

Cite this

Lee, K. H., Kim, J. W., & Kim, J. O. (2017). Visibility enhancement via optimal gamma tone mapping for OST displays under ambient light. In 2017 IEEE International Conference on Image Processing, ICIP 2017 - Proceedings (pp. 470-474). (Proceedings - International Conference on Image Processing, ICIP; Vol. 2017-September). IEEE Computer Society. https://doi.org/10.1109/ICIP.2017.8296325

Visibility enhancement via optimal gamma tone mapping for OST displays under ambient light. / Lee, Kyu Ho; Kim, Jae Woo; Kim, Jong Ok.
2017 IEEE International Conference on Image Processing, ICIP 2017 - Proceedings. IEEE Computer Society, 2017. p. 470-474 (Proceedings - International Conference on Image Processing, ICIP; Vol. 2017-September).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Lee, KH, Kim, JW & Kim, JO 2017, Visibility enhancement via optimal gamma tone mapping for OST displays under ambient light. in 2017 IEEE International Conference on Image Processing, ICIP 2017 - Proceedings. Proceedings - International Conference on Image Processing, ICIP, vol. 2017-September, IEEE Computer Society, pp. 470-474, 24th IEEE International Conference on Image Processing, ICIP 2017, Beijing, China, 17/9/17. https://doi.org/10.1109/ICIP.2017.8296325

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abstract = "Visibility of the overlaid virtual image is sensitively affected by surrounding illumination in OST (optical see-through) displays. Ambient light may especially deteriorate the visibility of low gray levels, whose luminance is comparable to ambient light. Therefore, we first derive a luminance model based on actual measurements under various ambient lights, and use this model to extract low gray-level region (LGR), which suffers severely from contrast loss. It was experimentally found that gamma tone mapping is the most appropriate for LGR contrast enhancement of OST displays. The gamma value is optimally determined by cost minimization. Visibility enhancement is verified by experiments on a practical setup with a variety of ambient light levels and images.",

keywords = "Ambient light, Gamma tone mapping, Low gray-level region, OST display, Visibility enhancement",

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Visibility enhancement via optimal gamma tone mapping for OST displays under ambient light

Abstract

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Keywords

ASJC Scopus subject areas

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