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Proceedings Paper

Optical analysis of electro-optical systems by MTF calculus
Author(s): Elisa Signoreto Barbarini; Daniel dos Santos Jr.; Mário Antonio Stefani; Fátima Maria Mitsue Yasuoka; Jarbas C. Castro Neto; Evandro Luís Linhari Rodrigues
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Paper Abstract

One of the widely used methods for performance analysis of an optical system is the determination of the Modulation Transfer Function (MTF). The MTF represents a quantitative and direct measure of image quality, and, besides being an objective test, it can be used on concatenated optical system. This paper presents the application of software called SMTF (software modulation transfer function), built in C++ and Open CV platforms for MTF calculation on electro-optical system. Through this technique, it is possible to develop specific method to measure the real time performance of a digital fundus camera, an infrared sensor and an ophthalmological surgery microscope. Each optical instrument mentioned has a particular device to measure the MTF response, which is being developed. Then the MTF information assists the analysis of the optical system alignment, and also defines its resolution limit by the MTF graphic. The result obtained from the implemented software is compared with the theoretical MTF curve from the analyzed systems.

Paper Details

Date Published: 2 November 2011
PDF: 7 pages
Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 80117P (2 November 2011); doi: 10.1117/12.903262
Show Author Affiliations
Elisa Signoreto Barbarini, Univ. de São Paulo (Brazil)
Opto Eletrônica S.A. (Brazil)
Daniel dos Santos Jr., Opto Eletrônica S.A. (Brazil)
Mário Antonio Stefani, Opto Eletrônica S.A. (Brazil)
Fátima Maria Mitsue Yasuoka, Univ. de São Paulo (Brazil)
Opto Eletrônica S.A. (Brazil)
Jarbas C. Castro Neto, Univ. de São Paulo (Brazil)
Opto Eletrônica S.A. (Brazil)
Evandro Luís Linhari Rodrigues, Univ. de São Paulo (Brazil)

Published in SPIE Proceedings Vol. 8011:
22nd Congress of the International Commission for Optics: Light for the Development of the World
Ramón Rodríguez-Vera; Ramón Rodríguez-Vera; Ramón Rodríguez-Vera; Rufino Díaz-Uribe; Rufino Díaz-Uribe; Rufino Díaz-Uribe, Editor(s)

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