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Comparative Study of Wavelet Based Lattice QIM Techniques and Robustness Against AWGN and JPEG attacks Host Publication: Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet Authors: D. Bardyn, A. Dooms, T. Dams and P. Schelkens Publisher: Springer Publication Date: Aug. 2009 Number of Pages: 15 ISBN: 978-3-642-03687-3
Abstract: We study watermarking techniques based on Quantization
IndexModulation for which sets of lattice quantizers Qm are used (LQIM).
A recipe for constructing such quantizers Qm is proposed, where the size
of these sets is variable, so that the payload is easily adaptable. We
make a comparative study of 8 dimensional lattices with good quantizer
properties, where the embedding is done in the wavelet domain. Along
the way, the gap between the theoretical ideas behind QIM and practical
systems using lattices is closed by extending techniques, such as dithered
quantizers and distortion compensation, from the scalar case to LQIM.
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