| Presentation | 2004/1/26 A Note on Quality Improvement of Color JPEG Images Megumi TAKEZAWA, Miki HASEYAMA, Hideo KITAJIMA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In JPEG coding, quantization errors in decoded images sometimes occur in high frequency regions. Especially, in the color images, the quantization errors of the luminance data are more visible than those of the chrominance data. Therefore, we propose a quality improvement technique for the high frequency regions by adding new codes to reduce the luminance quantization errors. Moreover, to make the number of bits for the new codes smaller, the proposed method calculates them by utilizing fractal image coding. Some simulation results verify that the proposed method can effectively improve the image quality in the high frequency regions and provide the high quality images. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | JPEG / fractal image coding / quantization error |
| Paper # | ITS2003-50,IE2003-185 |
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| Conference Information | |
| Committee | ITS |
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| Conference Date | 2004/1/26(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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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) | A Note on Quality Improvement of Color JPEG Images |
| Sub Title (in English) | |
| Keyword(1) | JPEG |
| Keyword(2) | fractal image coding |
| Keyword(3) | quantization error |
| 1st Author's Name | Megumi TAKEZAWA |
| 1st Author's Affiliation | School of Engineering, Hokkaido University() |
| 2nd Author's Name | Miki HASEYAMA |
| 2nd Author's Affiliation | School of Engineering, Hokkaido University |
| 3rd Author's Name | Hideo KITAJIMA |
| 3rd Author's Affiliation | School of Engineering, Hokkaido University |
| Date | 2004/1/26 |
| Paper # | ITS2003-50,IE2003-185 |
| Volume (vol) | vol.103 |
| Number (no) | 639 |
| Page | pp.pp.- |
| #Pages | 6 |
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