274 search results - page 49 / 55 » Anti-forensics of JPEG compression |
IJNSEC
2007
13 years 7 months ago
2007
In this paper, we propose a discrete cosine transform (DCT) based spread spectrum data-hiding algorithm that is resilient to statistical attacks. Unlike other spread spectrum base...
CVPR
2009
IEEE
15 years 2 months ago
2009
IEEE
We describe a novel and robust feature descriptor called ordinal spatial intensity distribution (OSID) which is invariant to any monotonically increasing brightness changes. Many t...
ECCV
2002
Springer
14 years 9 months ago
2002
Springer
Abstract. This paper considers the dynamic tree (DT) model, first introduced in [1]. A dynamic tree specifies a prior over structures of trees, each of which is a forest of one or ...
ICIP
2005
IEEE
14 years 9 months ago
2005
IEEE
As a key part of universal source coding, context quantization is very important for improving compression performance. However, in most existing methods, the quantizer is trained...
ICIP
2004
IEEE
14 years 9 months ago
2004
IEEE
Quantization index modulation (QIM) techniques have been gaining popularity in the data hiding community because of their robustness and information-theoretic optimality against a...