Tone reproduction for high-dynamic range imaging based on adaptive filtering

Changwoo Ha; Joohyun Lee; Jechang Jeong

doi:10.1117/1.OE.53.3.033103

20 March 2014 Tone reproduction for high-dynamic range imaging based on adaptive filtering

Changwoo Ha, Joohyun Lee, Jechang Jeong

Author Affiliations +

Funded by: National Research Foundation of Korea (NRF)

Optical Engineering, Vol. 53, Issue 3, 033103 (March 2014). https://doi.org/10.1117/1.OE.53.3.033103

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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Changwoo Ha, Joohyun Lee, and Jechang Jeong "Tone reproduction for high-dynamic range imaging based on adaptive filtering," Optical Engineering 53(3), 033103 (20 March 2014). https://doi.org/10.1117/1.OE.53.3.033103

Published: 20 March 2014

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