| Presentation | 2002/10/17 A Cubic Unsharp Masking Using the Multiscale Products Hidetoshi OKAZAKI, Makoto NAKASHIZUKA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we propose a new cubic unsharp masking technique using the wavelet scale product. The linear unsharp masking technique emphasizes the high frequency component in the degraded input image for local contrast enhancement. However, the noise component that appears in the input image is also emphasized. To avoid emphasis of noise components, the cubic unsharp masking has been proposed. In the cubic unsharp masking, the magnitude of emphasis of the high frequency component is controlled by the local gradient of the input image. To improve the noise suppression capability of the cubic unsharp masking, we introduce the wavelet multiscale product for control of the emphasis of the high frequency components. Since the multiscale product indicates the edge region by its sign, the simple threshold operation can extract the region that is desired to enhance. In experiment, we show comparison between the cubic unsharp masking with gradients and the proposed method. The noise variance of the enhance image that is obtained from the proposed method is about half of the conventional cubic unsharp masking. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Image Enhancement / Unsharp Masking / Wavelet Transform / Edge Detection |
| Paper # | IE2002-80 |
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| Conference Information | |
| Committee | IE |
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| Conference Date | 2002/10/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| 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) | A Cubic Unsharp Masking Using the Multiscale Products |
| Sub Title (in English) | |
| Keyword(1) | Image Enhancement |
| Keyword(2) | Unsharp Masking |
| Keyword(3) | Wavelet Transform |
| Keyword(4) | Edge Detection |
| 1st Author's Name | Hidetoshi OKAZAKI |
| 1st Author's Affiliation | Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology() |
| 2nd Author's Name | Makoto NAKASHIZUKA |
| 2nd Author's Affiliation | Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology |
| Date | 2002/10/17 |
| Paper # | IE2002-80 |
| Volume (vol) | vol.102 |
| Number (no) | 403 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |