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ISBI
2004
IEEE
14 years 8 months ago
Speckle Reduction on Ultrasound Image by Variational Methods and Adaptive Lagrangian Multipliers
Ultrasound images are corrupted by a multiplicative noise, the speckle, which makes high level analysis difficult. Within each resolution cell a number of elementary scatterers re...
Arnaud Ogier, Pierre Hellier, Christian Barillot
ICMCS
2008
IEEE
175views Multimedia» more  ICMCS 2008»
14 years 2 months ago
Fast mode decision for adaptive prediction error coding
In [1], Adaptive Prediction Error Coding (APEC) in spatial and frequency domain is proposed and significantly improves the coding efficiency of video coders. However, this approac...
Cixun Zhang, Kemal Ugur, Moncef Gabbouj
ICASSP
2007
IEEE
14 years 2 months ago
Stationary-Tones Interference Cancellation using Adaptive Tracking
It is usual in practice that recorded sounds are contaminated by stationary tones coming from power wiring (50/60 Hz or 400 Hz and their harmonics), frame or line frequencies from...
Ivan Tashev, Henrique S. Malvar
ISCAS
2003
IEEE
120views Hardware» more  ISCAS 2003»
14 years 1 months ago
Combining adaptive smoothing and decision-directed channel estimation schemes for OFDM WLAN systems
In this paper, a new channel estimation method for OFDM WLAN systems is proposed. This proposal mainly consists of smoothing filtering and decision-directed tracking loop schemes,...
Hsuan-Yu Liu, Yi-Hsin Yu, Chien-Jen Hung, Temg-Yin...
CAINE
2003
13 years 9 months ago
A Fuzzy Logic Based Multiple Reference Model Adaptive Control
This paper presents a fuzzy logic approach for switching multiple reference models, within the Model Reference Adaptive Control (MRAC) framework, in response to major changes in t...
Sukumar Kamalasadan, Adel A. Ghandakly, Khalid S. ...