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» On Lattice Quantization Noise
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TIP
2002
107views more  TIP 2002»
14 years 9 months ago
Dequantizing image orientation
Abstract--We address the problem of computing a local orientation map in a digital image. We show that standard image gray level quantization causes a strong bias in the repartitio...
Agnès Desolneux, Saïd Ladjal, Lionel M...
SIGGRAPH
1989
ACM
15 years 1 months ago
Algorithms for solid noise synthesis
A solid noise is a function that defines a random value at each point in space. Solid noises have immediate and powerful applications in surface texturing, stochastic modeling, a...
J. P. Lewis
IFSA
2003
Springer
89views Fuzzy Logic» more  IFSA 2003»
15 years 3 months ago
Lattice Fuzzy Signal Operators and Generalized Image Gradients
In this paper we use concepts from the lattice-based theory of morphological operators and fuzzy sets to develop generalized lattice image operators that are nonlinear convolutions...
Petros Maragos, Vassilis Tzouvaras, Giorgos B. Sta...
ASIACRYPT
2004
Springer
15 years 3 months ago
Lattice-Based Threshold-Changeability for Standard Shamir Secret-Sharing Schemes
Abstract. We consider the problem of increasing the threshold parameter of a secret-sharing scheme after the setup (share distribution) phase, without further communication between...
Ron Steinfeld, Huaxiong Wang, Josef Pieprzyk
ISCAS
2003
IEEE
84views Hardware» more  ISCAS 2003»
15 years 3 months ago
A sigma-delta based open-loop frequency modulator
A constant-envelope, continuous phase modulation architecture is presented in which a sigma-delta modulator is combined with an open-loop modulator. Compared to existing architect...
Denis Daly, Anthony Chan Carusone