VARIABLE REGION VECTOR QUANTIZATION, SPACE WARPING AND SPEECH/IMAGE COMPRESSION.

Yasuo Matsuyama

研究成果: Conference contribution

抄録

Algorithms for vector quantization of variable region data are given. The design iteration is proved to converge. An important issue is the optimization step of the region shape with respect to the vector quantization codebook. Thus, the presented design method is a nontrivial extention of ordinary vector quantizer design which contains the classical Lloyd-Max algorithm. First, the main algorithm is given without introducing any physical entity. Therefore, the method is applicable to any data including speech and image as long as the quantization distortion is defined. In the speech coding case the region shape optimization is interpreted as the epoch interval adjustment. The selection of the adjusted epochs with respect to the vector quantization codebook considerably reduces the quantizing distortion. This enables very-low-rate speech compression. Then, the image coding case is formulated and some convergence problem are discussed.

本文言語English
ホスト出版物のタイトルICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
出版社IEEE
ページ2201-2204
ページ数4
出版ステータスPublished - 1987
外部発表はい

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering
  • Acoustics and Ultrasonics

フィンガープリント 「VARIABLE REGION VECTOR QUANTIZATION, SPACE WARPING AND SPEECH/IMAGE COMPRESSION.」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル