616 search results - page 9 / 124 » DCT Based High Quality Image Compression |
IJNSEC
2007
13 years 9 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...
ICASSP
2011
IEEE
13 years 21 days ago
2011
IEEE
The statistical footprint left by JPEG compression can be a valuable source of information for the forensic analyst. Recently, it has been shown that a suitable anti-forensic meth...
ICIP
1997
IEEE
14 years 16 days ago
1997
IEEE
A novel algorithm is described for coding objects in video compression systems which gives complete control over the bit allocation to the video objects. The method is evaluated b...
TCSV
2008
13 years 9 months ago
2008
A quality constrained compression algorithm based on Discrete Wavelet Transform (DWT) is proposed. The spatial-frequency decomposition property of DWT provides possibility for not...
TIFS
2008
13 years 8 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...