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A reversible-zero watermarking scheme for medical images. [PDF]

open access: yesSci Rep
Taj R   +5 more
europepmc   +1 more source

Semi - Fragile Watermarks für digitale Bilder

open access: yes, 2018
This Masters thesis describes the process of implementing a semi-fragile watermark, examining especially the usage of the wavelet transform as well as the creation of pseudo random numbers to enable secure encryption and embedding of a watermark. Based on the realized application, experiments with different sorts of image manipulations were conducted ...
openaire   +1 more source

Semi-fragile watermarking scheme for authentication of JPEG images

open access: yes
With the increasing popularity of JPEG images, a need arises to devise effective watermarking techniques which consider JPEG compression as an acceptable manipulation.

core  

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