Tone reproduction for high-dynamic range imaging based on adaptive filtering
- Authors
- Ha, Changwoo; Lee, Joohyun; Jeong, Jechang
- Issue Date
- Mar-2014
- Publisher
- SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
- Keywords
- high-dynamic range imaging; tone reproduction; tone mapping; adaptive filtering
- Citation
- OPTICAL ENGINEERING, v.53, no.3
- Indexed
- SCIE
SCOPUS
- Journal Title
- OPTICAL ENGINEERING
- Volume
- 53
- Number
- 3
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/160541
- DOI
- 10.1117/1.OE.53.3.033103
- ISSN
- 0091-3286
- Abstract
- A tone reproduction algorithm with enhanced contrast of high-dynamic range images on conventional low-dynamic range display devices is presented. The proposed algorithm consists mainly of block-based parameter estimation, a characteristic-based luminance adjustment, and an adaptive Gaussian filter using minimum description length. Instead of relying only on the reduction of the dynamic range, a characteristic-based luminance adjustment process modifies the luminance values. The Gaussian-filtered luminance value is obtained from appropriate value of variance, and the contrast is then enhanced through the use of a relation between the adjusted luminance and Gaussian-filtered luminance values. In the final tone-reproduction process, the proposed algorithm combines color and luminance components in order to preserve the color consistency. The experimental results demonstrate that the proposed algorithm achieves a good subjective quality while enhancing the contrast of the image details.
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