Title :
Deadzone-constrained pruned tree-structured vector quantization
Author :
Song, Jun Seok ; Lee, Seung Jun ; Lee, Choong Woong
Author_Institution :
Core Technol. Dev. Lab., SK Telecom, Taejeon, South Korea
Abstract :
This article proposes deadzone-constrained pruned tree-structured vector quantization (DCPTSVQ) which is suitable for transform coding of image or speech. DCPTSVQ applied to transformed signals considerably improves the rate-distortion performance with remarkably reduced codebook storage when compared with conventional PTSVQ.
Keywords :
image coding; rate distortion theory; speech coding; transform coding; trees (mathematics); vector quantisation; DCPTSVQ; PTSVQ; deadzone-constrained pruned tree-structured VQ; image coding; rate-distortion performance; reduced codebook storage; speech coding; transform coding; transformed signals; Bit rate; Degradation; Discrete cosine transforms; Encoding; Probability distribution; Rate-distortion; Speech coding; Transform coding; Vector quantization; Wavelet coefficients;
Journal_Title :
Signal Processing Letters, IEEE
