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Ownership protection of plenoptic images by robust and reversible watermarking

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Ownership protection of plenoptic images by robust and reversible watermarking

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dc.contributor.author	Ansari, Amir
dc.contributor.author	Hong, Seokmin
dc.contributor.author	Saavedra Tortosa, Genaro
dc.contributor.author	Javidi, Bahram
dc.contributor.author	Martínez Corral, Manuel
dc.date.accessioned	2018-06-18T13:34:48Z
dc.date.available	2018-06-18T13:34:48Z
dc.date.issued	2018
dc.identifier.citation	Ansari, Amir Hong, Seokmin Saavedra Tortosa, Genaro Javidi, Bahram Martínez Corral, Manuel 2018 Ownership protection of plenoptic images by robust and reversible watermarking Optics and Lasers in Engineering 107 325 334
dc.identifier.uri	http://hdl.handle.net/10550/66681
dc.description.abstract	Plenoptic images are highly demanded for 3D representation of broad scenes. Contrary to the images captured by conventional cameras, plenoptic images carry a considerable amount of angular information, which is very appealing for 3D reconstruction and display of the scene. Plenoptic images are gaining increasing importance in areas like medical imaging, manufacturing control, metrology, or even entertainment business. Thus, the adaptation and refinement of watermarking techniques to plenoptic images is a matter of raising interest. In this paper a new method for plenoptic image watermarking is proposed. A secret key is used to specify the location of logo insertion. Employing discrete cosine transform (DCT) and singular value decomposition (SVD), a robust feature is extracted to carry the watermark. The Peak Signal to Noise Ratio (PSNR) of the watermarked image is always higher than 54.75 dB which is by far more than enough for Human Visual System (HVS) to discriminate the watermarked image. The proposed method is fully reversible and, if no attack occurs, the embedded logo can be extracted perfectly even with the lowest figures of watermark strength. Even if enormous attacks occur, such as Gaussian noise, JPEG compression and median filtering, our method exhibits significant robustness, demonstrated by promising bit error rate (BER) performance.
dc.language.iso	eng
dc.relation.ispartof	Optics and Lasers in Engineering, 2018, vol. 107, p. 325-334
dc.subject	Òptica
dc.subject	Imatges Processament Tècniques digitals
dc.title	Ownership protection of plenoptic images by robust and reversible watermarking
dc.type	journal article	es_ES
dc.date.updated	2018-06-18T13:34:49Z
dc.identifier.doi	10.1016/j.optlaseng.2018.03.028
dc.identifier.idgrec	126261
dc.rights.accessRights	open access	es_ES