28 search results - page 6 / 6 » Quantization Based Blind Watermarking Algorithm Using DWT |
MMSEC
2006
ACM
13 years 10 months ago
2006
ACM
We present an efficient JPEG2000-based image authentication scheme, which is robust to JPEG compression and other allowed signal processing operations. Positive wavelet-based wate...
ICIP
2004
IEEE
14 years 6 months ago
2004
IEEE
In this paper we suggest viewing images (as well as attacks on them) as a sequence of linear operators and propose novel hashing algorithms employing transforms that are based on ...
TWC
2010
12 years 11 months ago
2010
The closed-loop transmit diversity technique is used to improve the performance of the downlink channel in MIMO communication systems. In these closed-loop systems, feedback delay...