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ICIP
2002
IEEE
16 years 8 months ago
Quantized projection data hiding
In this paper we propose a novel data hiding procedure called Quantized Projection (QP), that combines elements from quantization (i.e. Quantization Index Modulation, QIM) and spr...
Fernando Pérez-González, Féli...
ICIP
2002
IEEE
16 years 8 months ago
Reduced DCT approximations for low bit rate coding
Transform approximations are explored for speeding up the software compression of images and video. Faster approximations are used to replace the regular DCT whenever only few DCT...
Ricardo L. de Queiroz
ICIP
2002
IEEE
16 years 8 months ago
Face detection using coarse-to-fine support vector classifiers
We describe a new face detection algorithm based on a hierarchy of support vector classifiers (SVMs) designed for efficient computation. The hierarchy serves as a platform for a c...
Hichem Sahbi, Donald Geman, Nozha Boujemaa
ICIP
2002
IEEE
16 years 8 months ago
Polynomial features for robust face authentication
In this paper we introduce the DCT-mod2 facial feature extraction technique which utilizes polynomial coefficients derived from 2-D DCT coefficients of spatially neighbouring bloc...
Conrad Sanderson, Kuldip K. Paliwal
ICIP
2002
IEEE
16 years 8 months ago
Complexity regularized shape estimation from noisy Fourier data
We consider the estimation of an unknown arbitrary 2D object shape from sparse noisy samples of its Fourier transform. The estimate of the closed boundarycurve is parametrized by ...
Natalia A. Schmid, Yoram Bresler, Pierre Moulin