| Presentation | 2001/4/13 Effect Analysis of Rounding Operation in the Lossless / Lossy Wavelet Hideki Kuroki, Somchart Chokchaitam, Masahiro Iwahashi, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, the research of the lossless wavelet transform which can realize lossless encoding of digital images is very much done. The lossless wavelet composed of "rounding operations" in the lifting structure is especially effective for the lossless coding. However, this structure suffers degradation of the decoded image quality due to the rounding operation when it is applied to lossy coding introducing the quantization. Therefore, this report proposes a new way of encoding introducing the quantization "before" analysis filters of the wavelet transform so that the error on the decoded image reduces because of cancellation of the rounding errors between encoder and decoder. This report also theoretically analyze variance of the error to endorse effectiveness of the proposal. As a result, it is confirmed that the proposed method can improve SNR by 2.3 [dB] in maximum. Accuracy of the theoretical analysis is also confirmed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | lossless / wavelet / rounding / quantization / error / coding |
| Paper # | DSP2001-5,IE2001-5,MI2001-5 |
| Date of Issue |
| Conference Information | |
| Committee | IE |
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| Conference Date | 2001/4/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Image Engineering (IE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effect Analysis of Rounding Operation in the Lossless / Lossy Wavelet |
| Sub Title (in English) | |
| Keyword(1) | lossless |
| Keyword(2) | wavelet |
| Keyword(3) | rounding |
| Keyword(4) | quantization |
| Keyword(5) | error |
| Keyword(6) | coding |
| 1st Author's Name | Hideki Kuroki |
| 1st Author's Affiliation | Department of Electrical Engineering, Nagaoka University of technology() |
| 2nd Author's Name | Somchart Chokchaitam |
| 2nd Author's Affiliation | Department of Electrical Engineering, Nagaoka University of technology |
| 3rd Author's Name | Masahiro Iwahashi |
| 3rd Author's Affiliation | Department of Electrical Engineering, Nagaoka University of technology |
| Date | 2001/4/13 |
| Paper # | DSP2001-5,IE2001-5,MI2001-5 |
| Volume (vol) | vol.101 |
| Number (no) | 19 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |