| Presentation | 2013-03-14 Removal of Show-through for One-side Scanned Document by Discrete Optimization Yuichiro MUKAI, Toshikazu WADA, Hiroshi OIKE, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents a show-through removal method based on discrete optimization. Images of duplex printed documents may be degraded by show-through, which may affect the character recognition ratio of a document. Show-through is a common phenomenon that texts or figures on one side appears on the other side. There are two ways to remove show-through components from the images: show-through removal from both-side images and that from a one-side image. The method using both-side images requires 1)both side images and 2)precise alignment of images, which is a difficult problem to solve automatically. The method using a one-side image can be designed as a discrete optimization problem estimating both-side intensities for each pixel. However, the solution requires huge computational cost, because the number of labels is big (256×256). In this report, we formalize this problem as another discrete-optimization problem to estimate pixel's attributes (foreground, show-through, or background). Clearly, this method uses three labels, and thus, computationally inexpensive. Through experiment using many show-through images, we confirmed that our method removes show-through components. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Show-through / Discrete Optimization Problem / Belief Propagation / One-side Scanned Document |
| Paper # | PRMU2012-194 |
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| Conference Information | |
| Committee | PRMU |
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| Conference Date | 2013/3/7(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Pattern Recognition and Media Understanding (PRMU) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Removal of Show-through for One-side Scanned Document by Discrete Optimization |
| Sub Title (in English) | |
| Keyword(1) | Show-through |
| Keyword(2) | Discrete Optimization Problem |
| Keyword(3) | Belief Propagation |
| Keyword(4) | One-side Scanned Document |
| 1st Author's Name | Yuichiro MUKAI |
| 1st Author's Affiliation | Faculty of Systems Engineering, Wakayama University() |
| 2nd Author's Name | Toshikazu WADA |
| 2nd Author's Affiliation | Faculty of Systems Engineering, Wakayama University |
| 3rd Author's Name | Hiroshi OIKE |
| 3rd Author's Affiliation | Faculty of Systems Engineering, Wakayama University |
| Date | 2013-03-14 |
| Paper # | PRMU2012-194 |
| Volume (vol) | vol.112 |
| Number (no) | 495 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |