| Presentation | 1996/3/8 Multi-Resolution Joint Sub-Image Vector Quantization for Image Compression Hisakazu KIKUCHI, Takeshi NAKAZAWA, Yoshito ABE, Shigenobu SASAKI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | For low bit-rate image coding, this paper describes a scheme of vector quantization (VQ) in the multi-resolution subspaces defined by the wavelet transform. This method is referred to as multi-resolution joint sub-image vector quantization(MRJVQ). To represent the correlation between scales, a larger vector is formed by combining several multi-resolution pixel components that belong to the same part of an original sub-image block, and is referred to as a joint vector. If the vector norm is smaller than a threshold, a part of the joint vector is suppressed. Vector quantization is applied to the other significant joint vectors, thus resulting high coding performance. Furthermore, we investigate 2-stage VQ in MRJVQ. At higher bit rates where conventional single-stage MRJVQ does not cover, the 2-stage version works and offers higher image quality. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Image Coding / Wavelet Transform / Vector Quantization |
| Paper # | CAS95-126,DSP95-181,CS95-204 |
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| Conference Information | |
| Committee | CAS |
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| Conference Date | 1996/3/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Circuits and Systems (CAS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Multi-Resolution Joint Sub-Image Vector Quantization for Image Compression |
| Sub Title (in English) | |
| Keyword(1) | Image Coding |
| Keyword(2) | Wavelet Transform |
| Keyword(3) | Vector Quantization |
| 1st Author's Name | Hisakazu KIKUCHI |
| 1st Author's Affiliation | Department of Electrical and Electronics Engineering, Niigata University() |
| 2nd Author's Name | Takeshi NAKAZAWA |
| 2nd Author's Affiliation | Department of Electrical and Electronics Engineering, Niigata University |
| 3rd Author's Name | Yoshito ABE |
| 3rd Author's Affiliation | Department of Electrical and Electronics Engineering, Niigata University |
| 4th Author's Name | Shigenobu SASAKI |
| 4th Author's Affiliation | Department of Electrical and Electronics Engineering, Niigata University |
| Date | 1996/3/8 |
| Paper # | CAS95-126,DSP95-181,CS95-204 |
| Volume (vol) | vol.95 |
| Number (no) | 556 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |