Focus adjustable motion-blur compensation method using deformable mirror

Tomohiko Hayakawa; Kenichi Murakami; Jerome Pitogo de Leon; Masatoshi Ishikawa

doi:10.1117/12.2509567

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4 March 2019 Focus adjustable motion-blur compensation method using deformable mirror

Tomohiko Hayakawa, Kenichi Murakami, Jerome Pitogo de Leon, Masatoshi Ishikawa

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Proceedings Volume 10925, Photonic Instrumentation Engineering VI; 1092507 (2019) https://doi.org/10.1117/12.2509567
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

For efficient visual inspection of moving targets, such as walls, surfaces of structures, roads, assembly lines, and so on in real-time, inspection systems must have a simple yet robust design capable of operating at high speed. However, high-speed motion degrades image quality due to motion blur and defocusing which are conventionally compensated separately. In this research, we propose a focus adjustable motion-blur compensation method using one deformable mirror capable of back-and-forth movement and curvature bending. The deformable mirror, installed between a target and a 2D camera, simultaneously tracks the moving target and adjusts the focus to achieve high-quality images in real-time without image processing. Through the experiment using a camera having VGA resolution and frame rate of 30Hz, a deformable mirror with a pupil size of 10mm and 43 actuators for deformation and tip/tilt, and a moving target, the results showed that our system improved motion blur and focusing at the same time with only one device. As future work, entire system can be packaged into inspection system.

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Tomohiko Hayakawa, Kenichi Murakami, Jerome Pitogo de Leon, and Masatoshi Ishikawa "Focus adjustable motion-blur compensation method using deformable mirror", Proc. SPIE 10925, Photonic Instrumentation Engineering VI, 1092507 (4 March 2019); https://doi.org/10.1117/12.2509567

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