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ICASSP
2009
IEEE
14 years 5 months ago
Sparse LMS for system identification
We propose a new approach to adaptive system identification when the system model is sparse. The approach applies the ℓ1 relaxation, common in compressive sensing, to improve t...
Yilun Chen, Yuantao Gu, Alfred O. Hero III
ICASSP
2009
IEEE
14 years 5 months ago
Decentralized variational filtering for simultaneous sensor localization and target tracking in binary sensor networks
Resource limitations in wireless sensor networks have put stringent constraints on distributed signal processing. In this paper, we propose a cluster-based decentralized variation...
Jing Teng, Hichem Snoussi, Cédric Richard
WIAMIS
2009
IEEE
14 years 5 months ago
Global motion estimation using variable block sizes and its application to object segmentation
Global motion is estimated either in the pixel domain or in block based domain. Until now, all the approaches regarding the latter are based on fixed sized blocks while the recent...
Marina Georgia Arvanitidou, Alexander Glantz, Andr...
ICMCS
2008
IEEE
131views Multimedia» more  ICMCS 2008»
14 years 5 months ago
Wyner-Ziv coding with spatio-temporal refinement based on successive turbo decoding
Arising needs for extremely simple encoder motivate investigations on distributed video coding (DVC). The Wyner-Ziv coding, one of the representative DVC schemes, reconstructs vid...
Bonghyuck Ko, Hiuk Jae Shim, Byeungwoo Jeon
ICRA
2008
IEEE
149views Robotics» more  ICRA 2008»
14 years 5 months ago
Information-optimal selective data return for autonomous rover traverse science and survey
— Selective data return leverages onboard data analysis to allocate limited bandwidth resources during remote exploration. Here we present an adaptive method to subsample image s...
David R. Thompson, Trey Smith, David Wettergreen