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CVIU
2008
209views more  CVIU 2008»
13 years 9 months ago
Combining visual dictionary, kernel-based similarity and learning strategy for image category retrieval
This paper presents a search engine architecture, RETIN, aiming at retrieving complex categories in large image databases. For indexing, a scheme based on a two-step quantization ...
Philippe Henri Gosselin, Matthieu Cord, Sylvie Phi...
HIS
2009
13 years 7 months ago
An Efficient VQ-Based Data Hiding Scheme Using Voronoi Clustering
In this paper, we propose a vector quantization (VQ) -based information hiding scheme that cluster the VQ codeowrds according the codewords' relation on Voronoi Diagram (VD). ...
Ming-Ni Wu, Puu-An Juang, Yu-Chiang Li
ICASSP
2009
IEEE
13 years 7 months ago
Differential feedback of MIMO channel correlation matrices based on geodesic curves
This paper proposes a differential quantization strategy to be used in the feedback link of a multi-input-multi-output (MIMO) communication system. This algorithm is applied to th...
Daniel Sacristán-Murga, Antonio Pascual-Ise...
ICASSP
2011
IEEE
13 years 1 months ago
A comparative analysis of biometric secret-key binding schemes based on QIM and Wyner-Ziv coding
Biometric secret-key binding inherently requires signal processing and error correction schemes due to noisy measurement readings. Two previously proposed strategies, Quantization...
Aniketh Talwai, Francis Minhthang Bui, Ashish Khis...
ICASSP
2011
IEEE
13 years 1 months ago
Grassmannian predictive coding for limited feedback multiuser MIMO systems
Grassmannian beamforming is an efficient way to quantize channel state information in multiple-input multiple-output wireless systems. Unfortunately, multiuser systems require la...
Takao Inoue, Robert W. Heath Jr.