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Content Provider | IEEE Xplore Digital Library |
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Author | Fukunaga, T. Yamada, Y. Ono, Y. Tazaki, S. |
Copyright Year | 1992 |
Description | Author affiliation: Takuma Nat. Coll. of Technol., Japan (Fukunaga, T.) |
Abstract | Although the average distortion of full search vector quantization is minimized, its utilization is severely limited by the computational complexity of the encoding process. The authors propose a new method such that, to reduce the number of codewords for which the distortion must be calculated, each sample of the input vector is quantized before the vector quantization. The number of codewords to which any vector existing in some hypercube will be quantized is very much smaller than the number of the original codewords. The method is applicable to various distortion measures based on the norm. The simulation result shows that the proposed method is 62 times faster than the conventional full search algorithm for the IID Gaussian source when the dimensionality is 4 and the rate is 10(bits/vector).< |
Starting Page | 63 |
Ending Page | 66 |
File Size | 302626 |
Page Count | 4 |
File Format | |
ISBN | 0780308034 |
DOI | 10.1109/ICCS.1992.254939 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 1992-01-01 |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Vector quantization Hypercubes Encoding Computational complexity Bit rate Distortion measurement Speech coding Educational institutions Consumer electronics Laboratories |
Content Type | Text |
Resource Type | Article |
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