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Proceedings Paper

Speed-up technique of rangefinder system that consists of an image sensor with an electronic pattern mask
Author(s): Shingo Miyagasako; Nobuhiro Okada; Eiji Kondo
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Paper Abstract

3-dimentional image measurement is still an important field. A measurement system for the aim requires sufficiently fast speed, compactness, and high cost performance. To meet these requirements, we have developed a rangefinder system that consists of an image sensor with an electronic pattern mask. It was shown that one range image, theoretically, can be obtained in about 0.025 [s] by using the system. However, it was necessary to make acquisition time longer since the output voltage from the image sensor was too small (about 1.0mV). One range image was obtained in 128 [s] really. In this paper, we propose a speed-up technique of the rangefinder system by introducing an integration circuit. A simple circuit is adopted as the integration circuit from a perspective of a cost performance. By using the circuit, measurement speed is improved by 2400 times (0.053 [s / one range image]), and output voltages are improved by about 10 times (about 10mV), theoretically. From experimental results, there are some problems with the measurement by using the circuit. However, it is also shown that the system has a possibility to be improved at the same level as the theoretical value in the method by solving the problems.

Paper Details

Date Published: 14 April 2010
PDF: 7 pages
Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75226C (14 April 2010); doi: 10.1117/12.851425
Show Author Affiliations
Shingo Miyagasako, Kyushu Univ. (Japan)
Nobuhiro Okada, Kyushu Univ. (Japan)
Eiji Kondo, Kyushu Univ. (Japan)

Published in SPIE Proceedings Vol. 7522:
Fourth International Conference on Experimental Mechanics
Chenggen Quan; Kemao Qian; Anand Krishna Asundi; Fook Siong Chau, Editor(s)

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