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HDR image watermarking based on bracketing decomposition
<span title="">2013</span>
<i title="IEEE">
<a target="_blank" rel="noopener" href="https://fatcat.wiki/container/gtrqa24xerhsbfcojson6wogdy" style="color: black;">2013 18th International Conference on Digital Signal Processing (DSP)</a>
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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
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<a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/icdsp.2013.6622687">doi:10.1109/icdsp.2013.6622687</a>
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... ties 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. Index Terms-High dynamic range (HDR) imaging; tonemapping operators (TMOs); watermarking; data hiding.
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