Improved image tamper localisation using chaotic maps and self-recovery
K Sreenivas, V Kamakshiprasad - Journal of Visual Communication and …, 2017 - Elsevier
In this paper an image tamper localisation scheme is proposed in which authentication bits
of a 2× 2 image block are generated using the chaotic maps. Further the scheme is
improved by including a self-recovery method to recover the tampered regions. To improve
the quality of the recovered image, two different sets of restoration bits of a block are
generated and each one is embedded into randomly selected distinct blocks. The proposed
tamper detection scheme performs better than some of the recent schemes proposed by the …
of a 2× 2 image block are generated using the chaotic maps. Further the scheme is
improved by including a self-recovery method to recover the tampered regions. To improve
the quality of the recovered image, two different sets of restoration bits of a block are
generated and each one is embedded into randomly selected distinct blocks. The proposed
tamper detection scheme performs better than some of the recent schemes proposed by the …
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