Title :
Novel VQ with constraints on the quantization error distribution
Author :
Schenk, Joachim ; Wallhoff, Frank ; Rigoll, Gerhard
Author_Institution :
Dept. of Electr. Engeneering & Inf. Technol., Tech. Univ. Munchen, Munich, Germany
fDate :
June 28 2009-July 3 2009
Abstract :
In this paper, we motivate and introduce a novel vector quantization (VQ) scheme for distributing the quantization error among the quantized features of a continuous feature vector in a predefined manner. This is done by defining ratios between the individual quantization errors of the features and shaping the Voronoi cells accordingly. In a series of experiments we show that the novel approach is capable of either distributing the quantization error equally among the dimensions or realize an arbitrary distribution.
Keywords :
vector quantisation; Voronoi cell shaping; quantization error distribution; vector quantization scheme; Data compression; Feature extraction; Handwriting recognition; Hidden Markov models; Information technology; Man machine systems; Pattern recognition; Signal mapping; Signal processing; Vector quantization; Voronoi cells; error shaping; quantization error; vector quantization;
Conference_Titel :
Multimedia and Expo, 2009. ICME 2009. IEEE International Conference on
Conference_Location :
New York, NY
Print_ISBN :
978-1-4244-4290-4
Electronic_ISBN :
1945-7871
DOI :
10.1109/ICME.2009.5202463