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Optimizing a Tone Curve for Backward-Compatible High Dynamic Range Image and Video Compression

Optimizing a Tone Curve for Backward-Compatible High Dynamic Range Image and Video Compression,10.1109/TIP.2010.2095866,IEEE Transactions on Image Pro

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Optimizing a Tone Curve for Backward-Compatible High Dynamic Range Image and Video Compression   (Citations: 1)
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For backward compatible high dynamic range (HDR) video compression, the HDR sequence is reconstructed by inverse tone-mapping a compressed low dynamic range (LDR) version of the original HDR content. In this paper, we show that the appropriate choice of a tone-mapping operator (TMO) can significantly improve the reconstructed HDR quality. We develop a statistical model that approximates the distortion resulting from the combined processes of tone-mapping and compression. Using this model, we formulate a numerical optimization problem to fi nd the tone-curve that minimizes the expected mean square error (MSE) in the reconstructed HDR sequence. We also develop as implified model that reduces the computational complexity of the optimization problem to a closed-form solution. Performance evaluations show that the proposed methods provide superior performance in terms of HDR MSE and SSIM compared to existing tone-mapping schemes. It is also shown that the LDR image quality resulting from the proposed methods matches that produced by perceptually-based TMOs.
Journal: IEEE Transactions on Image Processing , vol. 20, no. 6, pp. 1558-1571, 2011
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    • ...Tone-mapping for backward-compatible HDR compression (Comp) [10]: It is a global tone-mapping method that was inspired by the observation that most tonemapped content, especially videos, will undergo lossy image/video encoding such as H.264/AVC compression...

    Zicong Mai, et al. Subjective evaluation of tone-mapping methods on 3D images

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