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Proceedings Paper

Theoretical Bases And Measurement Of The Mtf For Integrated Image Sensors
Author(s): F. Chazallet; J. Glasser; J. Vaillant
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Paper Abstract

By analogy with optics, the spatial resolution of image sensors is generally characterized by the Modulation Transfer Function (MTF). This notion assumes that the system concerned has the same properties as a linear filter, which is not the case for integrated image sensors, since they have a discrete photoelement structure. These sensors must in fact be considered as integral samplers. It is possible to extend the notion of MTF to them by giving simultaneously the characteristic function, of the pixel and the photoelement pitch. But sampling involves various phenomena occuring in the Fourier space. So we compared different MTF measuring methods by computer simulation and the scanning knife edge appeared to be the best one. The measurement is performed with an experimental bench providing an accurate focusing

Paper Details

Date Published: 18 May 1987
PDF: 4 pages
Proc. SPIE 0702, International Topical Meeting on Image Detection and Quality, (18 May 1987); doi: 10.1117/12.966755
Show Author Affiliations
F. Chazallet, C. N. E. T. (France)
J. Glasser, C. N. E. T. (France)
J. Vaillant, C. N. E. T. (France)

Published in SPIE Proceedings Vol. 0702:
International Topical Meeting on Image Detection and Quality
Lucien F. Guyot, Editor(s)

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