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A tone mapping algorithm based on adaptive regionalization. (Chinese. English summary) Zbl 1289.68208

Summary: A tone mapping algorithm based on adaptive regionalization is presented for high dynamic range (HDR) image reproduction. Firstly, the chrominance and luminance of the HDR image are separated, the luminance is regionalized adaptively according to the histogram characteristic, and a piecewise linear tone scale function is constructed to allocate the range of display luminance for different regions, which raise perceptual contrast of the image. Then the details of the image is extracted through bilateral filtering technology, which maintains details of the original image. Finally, the chromatic and achromatic image is fused, and the lose of chromaticity resulted from luminance compressing is corrected. Experiments show that the proposed algorithm gains advantages over the traditional ones in dynamic range compressing, details maintaining, and the performance of color.

MSC:

68U10 Computing methodologies for image processing
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