Istituto di Scienza e Tecnologie dell'Informazione     
Solachidis V., Maiorana E., Campisi P., Banterle F. HDR image watermarking based on bracketing decomposition. In: DSP 2013 - 2013 18th International Conference on Digital Signal Processing (Santorini, Greece, 1-3 July 2013). Proceedings, pp. 1 - 6. IEEE, 2013.
The present paper proposes a novel watermarking scheme specifically designed for high dynamic range (HDR) images. The employed embedding strategy is based on a decomposition of the original HDR representation into multiple low dynamic range (LDR) images by means of a bracketing process. After having inserted the selected watermark into each LDR component, the final output is generated by combining the available contributions into a single HDR object. By exploiting some of the well studied properties of digital watermarking for standard LDR images, our approach is able to generate a watermarked HDR image visually equivalent to the original one, while allowing to detect the embedded information in both the marked HDR image and in its LDR counterpart, obtained through tone-mapping operators or by extracting a specific luminance range of interest from it. Several results obtained from an extensive set of experimental tests are reported to testify the effectiveness of the proposed scheme.
URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6622687&queryText%3DHDR+Image+Watermarking+based+on+Bracketing+Decomposition
DOI: 10.1109/ICDSP.2013.6622687
Subject HDR Watermarking
High Dynamic Range Imaging
Exposure Stack, Watermarking
Tone Mapping operators
Data hiding
H.5.1 Multimedia Information Systems. Watermarking

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