| Presentation | 2011-12-15 Bit-length Expansion by Inverse Quantization Process Johji NISHIYAMA, Akira TAGUCHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The bit-length is decided by the quantization of image capture devices. Therefore the bit-length expansion technique is also necessary for low bit-length captured images. If we expand bit-length of these images by using most bit-length expanding algorithms, pseudo contouring effect is observed in smooth gradient area. The bit-length expansion process and inverse quantization process are equivalent. Inverse quantization is able to perform by suitable filtering. In this paper, the bit-length expansion method using a nonlinear filter with adaptive window size is proposed. We show the excellent bit-length expanded results which are obtained by the proposed method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | bit-length expansion / inverse quantization process / ε-filtering / data dependent process |
| Paper # | SIS2011-42 |
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| Conference Information | |
| Committee | SIS |
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| Conference Date | 2011/12/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Smart Info-Media Systems (SIS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Bit-length Expansion by Inverse Quantization Process |
| Sub Title (in English) | |
| Keyword(1) | bit-length expansion |
| Keyword(2) | inverse quantization process |
| Keyword(3) | ε-filtering |
| Keyword(4) | data dependent process |
| 1st Author's Name | Johji NISHIYAMA |
| 1st Author's Affiliation | Department of Biomedical Engineering, Tokyo City University() |
| 2nd Author's Name | Akira TAGUCHI |
| 2nd Author's Affiliation | Department of Biomedical Engineering, Tokyo City University |
| Date | 2011-12-15 |
| Paper # | SIS2011-42 |
| Volume (vol) | vol.111 |
| Number (no) | 342 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |