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IJAT Vol.3 No.3 pp. 348-354
doi: 10.20965/ijat.2009.p0348
(2009)

Development Report:

Study on Visual Servosystems for Optical Microscopes to Observe a Moving Microorganism

Hirotoshi Ibe*, Jiro Otsuka**, and Hajime Onda***

*Department of Information Science and Technology, Graduate school of Science and Technology, Shizuoka University
3-5-1 Johoku, Hamamatsu, Shizuoka 432-8011, Japan

**Department of Mechanical Engineering, Faculty of Science and Technology, Shizuoka Institute of Science and Technology
2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555, Japan

***Department of Electric Engineering, Faculty of Science and Technology, Shizuoka Institute of Science and Technology
2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555, Japan

Received:
February 16, 2009
Accepted:
May 8, 2009
Published:
May 5, 2009
Keywords:
ptical microscope, positioning control, visual servo, image processing, microorganism
Abstract

This paper describes a visual servosystem that observes a moving microorganism within the optical microscope view field. The visual servosystem consists of an optical microscope, a high-speed CCD camera, a controller, and XY stages. The camera takes an image every 4 milliseconds. The target’s center of gravity is calculated using inverse white-to-black processing and blocking processing. Its position is fed back to XY stages so that the target reaches the center of the view field. The control program is from LabVIEW. As a result, by means of this visual servosystem, the image of a very small object, for example, a kind of lobster of a size of 0.4 ∼ 0.6 mm which moves in the water at the maximum speed of 4 mm/s can be kept in view based on a method whereby, on the XY stages on which the moving object can continue to be observed.

Cite this article as:
H. Ibe, J. Otsuka, and H. Onda, “Study on Visual Servosystems for Optical Microscopes to Observe a Moving Microorganism,” Int. J. Automation Technol., Vol.3, No.3, pp. 348-354, 2009.
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References
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Last updated on Nov. 08, 2019