Two reversible data hiding schemes for VQ-compressed images based on index coding.

Peyman Rahmani,Gholamhossein Dastghaibyfard

IET Image Processing（2018）

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摘要

This study proposes two reversible data hiding (RDH) schemes for vector quantisation (VQ)-compressed images based on switching-tree coding (STC) and dynamic tree-coding scheme (DTCS). Most developed VQ-based RDH schemes produce non-legitimate codes as output. In order to preserve the legitimacy of the embedded VQ code, some schemes embed data into VQ indices by employing an index replacement mecha...

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关键词

data encapsulation,decoding,image coding,tree codes,trees (mathematics),vector quantisation

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