| Presentation | 2015-03-03 Image Interpolation based on Weighting Function of Gaussian Takuro YAMAGUCHI, Yasuhiro NAKAJIMA, Masaaki IKEHARA, |
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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 image interpolation method based on a 2-D piecewise stationary autoregressive (PAR) model. Soft-decision adaptive interpolation (SAI) and its improved methods which are based on PAR model are state-of-the-art methods in image interpolation. They produce upconverted images with good quality but tend to have high calculation cost because of solving the inverse matrix problem to estimate the weighting parameters. So we use Gaussian function to estimate parameters without the inverse matrix calculation and reduce the calculation cost. Moreover, parameters are estimated on pixel by pixel, while in SAI they are constant in a local window. Thanks to these, the proposed method outperforms SAI in the quality of upconversion with low calculation cost. Finally we validate the proposed method through some experimental results. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | image interpolation / Gaussian / PAR model / image modeling |
| Paper # | EA2014-105,SIP2014-146,SP2014-168 |
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| Conference Information | |
| Committee | SIP |
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| Conference Date | 2015/2/23(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Signal Processing (SIP) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Image Interpolation based on Weighting Function of Gaussian |
| Sub Title (in English) | |
| Keyword(1) | image interpolation |
| Keyword(2) | Gaussian |
| Keyword(3) | PAR model |
| Keyword(4) | image modeling |
| 1st Author's Name | Takuro YAMAGUCHI |
| 1st Author's Affiliation | EEE Dept., Keio Univ.() |
| 2nd Author's Name | Yasuhiro NAKAJIMA |
| 2nd Author's Affiliation | EEE Dept., Keio Univ. |
| 3rd Author's Name | Masaaki IKEHARA |
| 3rd Author's Affiliation | EEE Dept., Keio Univ. |
| Date | 2015-03-03 |
| Paper # | EA2014-105,SIP2014-146,SP2014-168 |
| Volume (vol) | vol.114 |
| Number (no) | 474 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |