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Proceedings Paper

Digital technique for pixel-based displacement adjustment and sensitivity calibration
Author(s): Masafumi Yamakawa; Sachio Oki; Susumu Gohda; Takeharu Goji Etoh
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Paper Abstract

A technique for 3-intensified-sensor color high speed video camera system to construct precise color image is presented. It consists of a computer program and ancillary instruments (1) to adjust displacement of images taken by two or three image sensors and (2) to calibrate relationship between incident light intensity and corresponding digital output signal simultaneously. The pixel-based displacement adjustment is made by corresponding a pixel of one image sensor with four pixels adjacent to that point on another sensor. The weighted average of outputs for the four pixels are then multiplied by a coefficient calculated from a pixel-based sensitivity calibration. An incident light is splitted into three signals by the cubic prism and these signals are taken by three image sensors. For these images, the pixel-based displacement adjustment and the pixel-based sensitivity calibration are performed by computer program. The gap between the centers of nine circles transformed to another image by computer program and those in another one is within one pixel. As a result, two pixel-based transformation tables for displacement adjustment and sensitivity calibration are made and three images are reconstructed with the use of these tables.

Paper Details

Date Published: 12 December 1997
PDF: 6 pages
Proc. SPIE 3173, Ultrahigh- and High-Speed Photography and Image-based Motion Measurement, (12 December 1997); doi: 10.1117/12.294523
Show Author Affiliations
Masafumi Yamakawa, Kumano Technical College (Japan)
Sachio Oki, Kinki Univ. (Japan)
Susumu Gohda, Kinki Univ. (Japan)
Takeharu Goji Etoh, Kinki Univ. (Japan)


Published in SPIE Proceedings Vol. 3173:
Ultrahigh- and High-Speed Photography and Image-based Motion Measurement
C. Bruce Johnson; Andrew Davidhazy; Takeharu Goji Etoh; C. Bruce Johnson; Donald R. Snyder; James S. Walton; James S. Walton, Editor(s)

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