| Presentation | 2002/1/22 0ptimum Quantization Step Size for Integer Lossless Transform Coefficients Kunitoshi KOMATSU, Kaoru SEZAKI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The DCT and wavelet coefficients have real values which are continuously distributed. Therefore the entropy of the quantized transform coefficients is also varied continuously, when the quantization step size is continuously changing. On the other hand, the integer lossless DCT and wavelet coefficients have integral values. Therefore the entropy of the quantized transform coefficients is not varied continuously for the quantization step size. Thus we must carefully determine the quantization step size for the integer lossless DCT and wavelet coefficients to make lossy compression efficiency high. In this paper, we will illustrate that we can not make use of the optimum step size of the lossy version as it is and propose the optimum quantization step size for the integer lossless transforms. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | integer lossless transform / quantization step size / DCT / wavelet transform |
| Paper # | ITS2001-47, IE2001-186 |
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| Conference Information | |
| Committee | ITS |
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| Conference Date | 2002/1/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Intelligent Transport Systems Technology (ITS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | 0ptimum Quantization Step Size for Integer Lossless Transform Coefficients |
| Sub Title (in English) | |
| Keyword(1) | integer lossless transform |
| Keyword(2) | quantization step size |
| Keyword(3) | DCT |
| Keyword(4) | wavelet transform |
| 1st Author's Name | Kunitoshi KOMATSU |
| 1st Author's Affiliation | Institute of Industrial Science, University of Tokyo() |
| 2nd Author's Name | Kaoru SEZAKI |
| 2nd Author's Affiliation | Center for Spatial Information Science at the University of Tokyo |
| Date | 2002/1/22 |
| Paper # | ITS2001-47, IE2001-186 |
| Volume (vol) | vol.101 |
| Number (no) | 624 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |