45 search results - page 7 / 9 » Image Authentication Using Hierarchical Semi-Fragile Waterma... |
ISCAS
2005
IEEE
14 years 17 days ago
2005
IEEE
—The pervasive distribution of digital images triggers an emergent need of authenticating degraded images by lossy compression and transmission. This paper proposes a robust cont...
ICIP
2003
IEEE
14 years 8 months ago
2003
IEEE
We propose an image hashing algorithm that is based on distributed compression principles. The algorithm assumes the availability of a robust feature vector extracted from the ima...
ICIP
2003
IEEE
14 years 8 months ago
2003
IEEE
Spread Transform (ST) is a quantization watermarking algorithm in which vectors of the wavelet coefficients of a host work are quantized, using one of two dithered quantizers, to ...
IEEEIAS
2009
IEEE
14 years 1 months ago
2009
IEEE
: This paper proposes a new watermarking method for detecting image tampering. First, an authentication number is created using a pair of watermark pixels as the coefficients of a ...
ICPR
2002
IEEE
14 years 8 months ago
2002
IEEE
With the wide spread utilization of biometric identification systems, establishing the authenticity of biometric data itself has emerged as an important research issue. We present...