Towards a tone mapping-robust watermarking algorithm for high dynamic range image based on spatial activity

作者：

Highlights：

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• A high dynamic range (HDR) image watermarking algorithm is proposed, which is robust to the general tone-mapping attack, not just to some of the numerous existing tone mapping operators.

• Two important spatial activity concepts, i.e., the activity of robustness and activity of perception, are respectively defined to characterize the spatial diversity of the robustness and imperceptibility of tone-mapped images.

• The separation of luminance and structural information was implemented to tackle the problem of the drastic variation of luminance dynamic range from HDR images to their corresponding tone-mapped images.

• The hierarchical embedding intensity and hybrid perceptual mask are designed to enhance the imperceptibility and robustness of the HDR image watermarking.

摘要

•A high dynamic range (HDR) image watermarking algorithm is proposed, which is robust to the general tone-mapping attack, not just to some of the numerous existing tone mapping operators.•Two important spatial activity concepts, i.e., the activity of robustness and activity of perception, are respectively defined to characterize the spatial diversity of the robustness and imperceptibility of tone-mapped images.•The separation of luminance and structural information was implemented to tackle the problem of the drastic variation of luminance dynamic range from HDR images to their corresponding tone-mapped images.•The hierarchical embedding intensity and hybrid perceptual mask are designed to enhance the imperceptibility and robustness of the HDR image watermarking.

论文关键词：High dynamic range imaging,Digital watermarking,Tone mapping,Spatial activity

论文评审过程：Received 23 June 2017, Revised 6 April 2018, Accepted 6 April 2018, Available online 13 April 2018, Version of Record 16 April 2018.

论文官网地址：https://doi.org/10.1016/j.image.2018.04.005