Basic examination on development of 3D semi-passive digitizing system using pulse compression
✍ Scribed by Ikumatsu Fujimoto; Shigeru Ando
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 727 KB
- Volume
- 83
- Category
- Article
- ISSN
- 8756-663X
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✦ Synopsis
In this paper, the basic measurement method of a three-dimensional digitizer using a CCD camera is described in detail. In localization measurement with a CCD camera, the effect of background light and sensitivity considerations are always important for high precision. In this research, a new measurement principle is proposed, in which a pulse compression technique known in radar is used to eliminate the effect of background light, even for a low-intensity light source, and the coordinate values on the CCD camera image plane are determined accurately. From the quantitative evaluation of the SN ratio improvement and fundamental experiments, it is verified that a substantial improvement of the SN ratio is realized for both the background noise and the pixel noise and that subpixel resolution is possible.