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Motion-blur-compensated imaging system using a rotating acrylic cube


Many methods have been proposed to compensate motion blur. As one of them, this study proposes a compensation method using a transparent rotating cube using Snell's law, which can be used even in a scene with large motion blur and can shoot at a high sampling rate. By synchronizing the rotation speed and the moving speed of the object, it is possible not only to capture images without causing motion blur, but also to reset the imaging angle of view every 90 ° rotation by taking advantage of the characteristics of the cube. The feature is that no time loss is caused by the reciprocating movement of the mirror that can be seen. When this method was applied to a belt conveyor rotating at high speed, it was confirmed that images equivalent to those at rest could be acquired even at a speed of 12 km / h.

Concept of the system

Layout of the system
Result image


  1. Tomohiko Hayakawa, Haruka Nakane and Masatoshi Ishikawa:Motion-blur Compensation System Using a Rotated Acrylic Cube with Visual Feedback, 1st Virtual IFAC World Congress (IFAC-V 2020) (Virtual Conference,2020.7.13), pp. 696:1-696:4.
  2. Haruka Nakane, Tomohiko Hayakawa, Takuya Kadowaki, Masatoshi Ishikawa: Corresponding with high-speed moving object using lens through the rotated acrylic cube,The 80th Japan Society of Applied Physics Autumn Meeting (2019 Hokkaido University, Sapporo campus),01-035.
  3. T. Hayakawa, T. Kadowaki, H. Tochioka, M. Ishikawa, "Motion-Blur-Compensated Microscopic Imaging System by Controlling the Optical Axis Using a Rotating Acrylic Cube", Focus on Microscopy 2019 (London, 2019.4.16)
  4. Takuya Kadowaki, Tomohiko Hayakawa, Masatoshi Ishikawa: Motion-blur compensation system using optical path control with acrylic cube,The 19th SICE System Integration Division Annual Conference (SI2018),pp. 3105 -- 3107 (2018) Best Presentation Award、System Integration Award for Outstanding Presentation
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