2 November 1984 Real Time Measurement Of An Object's Small Displacement By High Speed Video Camera With Moire Pattern
Author Affiliations +
Abstract
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 corrdina te 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 can not 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.
© (1984) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Rang Seng Chang, Rang Seng Chang, } "Real Time Measurement Of An Object's Small Displacement By High Speed Video Camera With Moire Pattern", Proc. SPIE 0497, High Speed Photography, Videography, and Photonics II, (2 November 1984); doi: 10.1117/12.944493; https://doi.org/10.1117/12.944493
PROCEEDINGS
6 PAGES


SHARE
Back to Top