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» Image Coding Using Vector-Embedded Karhunen-Loeve Transform
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ICFP
1997
ACM
14 years 28 days ago
Implementing Bit-addressing with Specialization
General media-processing programs are easily expressed with bitaddressing and variable-sized bit-fields. But the natural implementation of bit-addressing relies on dynamic shift ...
Scott Draves
ICASSP
2008
IEEE
14 years 3 months ago
A detection algorithm for zero-quantized DCT coefficients in JPEG
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...
Jin Li, Jarmo Takala, Moncef Gabbouj, Hexin Chen
AVBPA
1997
Springer
113views Biometrics» more  AVBPA 1997»
14 years 28 days ago
Generalized Likelihood Ratio-based Face Detection and Extraction of Mouth Features
In this paper we describe a system to reliably localize the position of the speaker’s face and mouth in videophone sequences. A statistical scheme based on a subspace method is p...
Charles Kervrann, Franck Davoine, P. Pérez,...
UIST
1993
ACM
14 years 25 days ago
Skeletal Strokes
A skeletal stroke is a kind of general brush stroke for changing the shape of pictures as if by bending, shearing, twisting, while conservating the aspect ratio of selected featur...
S. C. Hsu, I. H. H. Lee, Neil E. Wiseman
ICIP
2009
IEEE
14 years 9 months ago
Security Evaluation Of Informed Watermarking Schemes
In this paper, security evaluation of an important watermarking class based on quantization is given. Theoretical developments and practical simulations are used to measure the se...