Residual vector quantizers have been proposed to overcome the search complexity of regular single stage vector quantizers. We present a design algorithm for residual vector quantizer codebooks. An attempt is made to make full use of the sequential search nature of the encoding process. An error energy is formulated based on the distortion criterion with a constraint imposed to optimize for the sequential search. The codebook design is formulated as multidimensional minimization problem, where the error energy is minimized to obtain the required codebooks. The proposed algorithm is based on the gradient descent algorithm.<>
Constrained gradient descent algorithm for residual vector quantizer design
Proceedings of 1st International Conference on Image Processing ; 1 ; 124-128 vol.1
1994-01-01
373196 byte
Conference paper
Electronic Resource
English
Constrained Gradient Descent Algorithm for Residual Vector Quantizer Design
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