<B>Search results for</B> key=ORP1998 :
1 match found.
<P><H2>Refereed full papers (journals, book chapters, international conferences)</H2>
<H3>1998</H2>
<PRE>
@article{ORP1998,
	vgclass =	{refpap},
	vgproject =	{invariance},
	author =	{Joe J. K. {\'{O}~Ruanaidh} and Thierry Pun},
	title =	{Rotation, scale and translation invariant spread spectrum
	digital image watermarking},
	journal =	{Signal Processing},
	volume =	{66},
	number =	{3},
	pages =	{303--317},
	month =	{May},
	year =	{1998},
	note =	{(Special Issue on Copyright Protection and Control, B.
	Macq and I. Pitas, eds.)},
	abstract =	{A digital watermark is an invisible mark embedded in a
	digital image which may be used for a number of different purposes
	including image captioning and copyright protection. This paper
	describes how a combination of spread spectrum encoding of the embedded
	message and transform-based invariants can be used for digital image
	watermarking. In particular, it is described how a Fourier-Mellin-based
	approach can be used to construct watermarks which are designed to be
	unaffected by any combination of rotation and scale transformations. In
	addition, a novel method of CDMA spread spectrum encoding is introduced
	which allows one to embed watermark messages of arbitrary length and
	which need only a secret key for decoding. The paper also describes the
	usefulness of Reed Solomon error-correcting codes in this scheme.},
}
</PRE>

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