摘要
The resolution of a high speed video camera is not so high as photographic film, therefore the measurement of a small shift, such as the vibration of object is sometimes impossible. Here we suggest to use a grids cover on the object and pass this image through another transparent grids to the camera. It will generate a moire fringe which produce the equivalent resolution thousand times than before. We also put a coordinate mask on the screen of the video TV, it is not only let us get a possibility to measure the small displacement of object which we cannot see by video camera before, but also gives us a real time 3 Dimensional data. The mask errors generated hr the curved screen are also discussed.
原文 | ???core.languages.en_GB??? |
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頁(從 - 到) | 82-87 |
頁數 | 6 |
期刊 | Proceedings of SPIE - The International Society for Optical Engineering |
卷 | 497 |
DOIs | |
出版狀態 | 已出版 - 2 11月 1984 |