1344 search results - page 114 / 269 » Quantization |
ICASSP
2011
IEEE
14 years 6 months 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...
118
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ISCAS
1995
IEEE
15 years 6 months ago
1995
IEEE
Abstract— This paper describes a new first and secondorder delta-sigma modulator (DSM) concept where the first integrator is extracted and implemented by a FM oscillator with t...
104
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CVPR
2005
IEEE
16 years 4 months ago
2005
IEEE
We propose a camera that measures static gradients instead of static intensities. Quantizing sensed intensity differences between adjacent pixel values permits an ordinary A/D con...
ICIP
2006
IEEE
16 years 4 months ago
2006
IEEE
SP-frame is a new picture type supported by H.264, and supports functions such as rate-switching and random-access. In this paper, we investigate several complementary methods to ...
ICIP
2001
IEEE
16 years 4 months ago
2001
IEEE
In this paper we propose a new watermarking technique where the watermark is embedded according to two keys. The first key is used to embed a code bit in a block of pixels. The se...