25 search results - page 1 / 5 » A detection algorithm for zero-quantized DCT coefficients in... |
SSWMC
2004
13 years 6 months ago
2004
The use of kernel Fisher discriminants is used to detect the presence of JPEG based hiding methods. The feature vector for the kernel discriminant is constructed from the quantize...
ICASSP
2008
IEEE
13 years 11 months ago
2008
IEEE
The discrete cosine transform (DCT) is widely used in image/video coding standards. However, since most DCT coefficients will be quantized to zeros, a large number of redundant co...
TIFS
2008
13 years 4 months ago
2008
This paper presents a method for detection of double JPEG compression and a maximum likelihood estimator of the primary quality factor. These methods are essential for construction...
IH
2004
Springer
13 years 10 months ago
2004
Springer
In this paper, we introduce a new feature-based steganalytic method for JPEG images and use it as a benchmark for comparing JPEG steganographic algorithms and evaluating their embe...
ECCV
2006
Springer
14 years 6 months ago
2006
Springer
Abstract. The steady improvement in image/video editing techniques has enabled people to synthesize realistic images/videos conveniently. Some legal issues may occur when a doctore...