Space imaging measurement system based on fixed lens and moving detector

Akira Akiyama; Minoru Doshida; Eiichiro Mutoh; Hideo Kumagai; Hirofumi Yamada; Hiromitsu Ishii

doi:10.1117/12.680265

5 September 2006 Space imaging measurement system based on fixed lens and moving detector

Akira Akiyama, Minoru Doshida, Eiichiro Mutoh, Hideo Kumagai, Hirofumi Yamada, Hiromitsu Ishii

Proceedings Volume 6289, Novel Optical Systems Design and Optimization IX; 628907 (2006) https://doi.org/10.1117/12.680265
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

We have developed the Space Imaging Measurement System based on the fixed lens and fast moving detector to the control of the autonomous ground vehicle. The space measurement is the most important task in the development of the autonomous ground vehicle. In this study we move the detector back and forth along the optical axis at the fast rate to measure the three-dimensional image data. This system is just appropriate to the autonomous ground vehicle because this system does not send out any optical energy to measure the distance and keep the safety. And we use the digital camera of the visible ray range. Therefore it gives us the cost reduction of the three-dimensional image data acquisition with respect to the imaging laser system. We can combine many pieces of the narrow space imaging measurement data to construct the wide range three-dimensional data. This gives us the improvement of the image recognition with respect to the object space. To develop the fast movement of the detector, we build the counter mass balance in the mechanical crank system of the Space Imaging Measurement System. And then we set up the duct to prevent the optical noise due to the ray not coming through lens. The object distance is derived from the focus distance which related to the best focused image data. The best focused image data is selected from the image of the maximum standard deviation in the standard deviations of series images.

Citation Download Citation

Akira Akiyama, Minoru Doshida, Eiichiro Mutoh, Hideo Kumagai, Hirofumi Yamada, and Hiromitsu Ishii "Space imaging measurement system based on fixed lens and moving detector", Proc. SPIE 6289, Novel Optical Systems Design and Optimization IX, 628907 (5 September 2006); https://doi.org/10.1117/12.680265

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KEYWORDS

Sensors

Imaging systems

Modulation transfer functions

CCD cameras

Geometrical optics

3D image processing

CCD image sensors

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