Novel wavelet-based QIM data hiding technique for tamper detection and correction of digital images
Journal of Visual Communication and Image Representation
On protection of compressed image in fading channel using data hiding
Computers and Electrical Engineering
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The present paper proposes a scheme for error concealment of digital images(s) using data hiding in JPEG coding pipeline. The goal is achieved by embedding a low resolution version (image-digest) of an image into itself during compression using M-ary modulation. Halftoning technique is used to obtain the image digest from the low-resolution version of the image, while near-orthogonal quantization index modulation (QIM) is used for the implementation of M-ary modulation. At the decoder, this embedded watermark is extracted and is used as a reference to conceal the transmission losses in the received image. The simulation results show that the use of M-ary modulation provides more efficient performance measure with various loss blocks than traditional QIM, without decreasing the compatibility of standard JPEG coding scheme.