2019
DOI: 10.3390/app9040700
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A Robust Multi-Watermarking Algorithm for Medical Images Based on DTCWT-DCT and Henon Map

Abstract: To resolve the contradiction between existing watermarking methods—which are not compatible with the watermark’s ability to resist geometric attacks—and robustness, a robust multi-watermarking algorithm suitable for medical images is proposed. First, the visual feature vector of the medical image was obtained by dual-tree complex wavelet transform and discrete cosine transform (DTCWT-DCT) to perform multi-watermark embedding and extraction. Then, the multi-watermark was preprocessed using the henon map chaotic… Show more

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Cited by 76 publications
(45 citation statements)
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“…Existing watermarking algorithms are less robust to geometric attacks. Hence, to resist geometric attacks, a multi-watermarking algorithm has been proposed for medical images, based on dual-tree complex wavelet transform (DTCWT), DCT and a Henon Map [113]. This algorithm can be used for medical security, security authentication, cloud storage, and cloud transmission.…”
Section: Hybrid Domain Watermarking Algorithms and Current Trends In mentioning
confidence: 99%
“…Existing watermarking algorithms are less robust to geometric attacks. Hence, to resist geometric attacks, a multi-watermarking algorithm has been proposed for medical images, based on dual-tree complex wavelet transform (DTCWT), DCT and a Henon Map [113]. This algorithm can be used for medical security, security authentication, cloud storage, and cloud transmission.…”
Section: Hybrid Domain Watermarking Algorithms and Current Trends In mentioning
confidence: 99%
“…If −T − s•2 l < χ ex < −T, the current and the next watermark embedding flag are different from the corresponding watermark bit. In this case, extract the flags for the current and the next blocks in addition to correcting the flag of the current ESF by using Equations (30) and (31).…”
Section: Watermark Extractionmentioning
confidence: 99%
“…As medical images are highly sensitive to visual quality, most of the copyright protection algorithms use reversible embedding strategies. This approach ensures that after the watermarking is extracted, the medical image can be fully restored [28][29][30][31]. For example, Coatrieux et al [32] combine the reversible watermark scheme with a fragile reversible watermark embedding scheme.…”
Section: Introductionmentioning
confidence: 99%
“…Kingsbury [19], came out with the Dual-Tree Complex Wavelet Transform which is the DWT complex development [20]. The DTCWT fuse the DWT and CWT (Complex Wavelet Transform) criterions [21], where the main delivered advantages are translation invariance and favorable directional selectivity [22]. Figure 1 shows the DTCWT structure and coefficients orientations.…”
Section: Dual Tree Complex Wavelet Transformmentioning
confidence: 99%