| Presentation | 1995/7/18 Design of Very Large Hierarchical File System for Archiving Satellite Images Toshihiro Nemoto, Kazuhiko Sako, Masaru Kitsuregawa, Mikio Takagi, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recent attention on global environmental changes has stimulated the development of large scale global information systems. Satellite images play a very important role for understanding these global changes. However, the data size is very large and current file systems are not efficient enough to handle such huge data files. Migration of a whole the from tape to disk takes a very long time. Usually users are not interested in a whole image but in only a small portion of it. Thus, there is no need for full migration. We are now implementing a partially migratable file system based on 8mm tape robotics. The file system migrates only the necessary portion of a file onto the disk. Two real application programs : radio-metric/geometric correction and NDVI (Normalized Difference Vegetation Index) generation, were chosen and executed using our experimental file system. Large performance improvements were achieved compared to the conventional the level migration scheme. |
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| Committee | DE |
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| Conference Date | 1995/7/18(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Registration To | Data Engineering (DE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design of Very Large Hierarchical File System for Archiving Satellite Images |
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| 1st Author's Name | Toshihiro Nemoto |
| 1st Author's Affiliation | Institute of Industrial Science, University of Tokyo() |
| 2nd Author's Name | Kazuhiko Sako |
| 2nd Author's Affiliation | Institute of Industrial Science, University of Tokyo |
| 3rd Author's Name | Masaru Kitsuregawa |
| 3rd Author's Affiliation | Institute of Industrial Science, University of Tokyo |
| 4th Author's Name | Mikio Takagi |
| 4th Author's Affiliation | Institute of Industrial Science, University of Tokyo |
| Date | 1995/7/18 |
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| Volume (vol) | vol.95 |
| Number (no) | 147 |
| Page | pp.pp.- |
| #Pages | 7 |
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