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Proceedings Paper

Evaluation of point spread functions of microscope objectives using moments by modified definitions
Author(s): R. Castaneda; Juergen Kross
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Paper Abstract

The analysis of point spread functions is important for the quality evaluation of imaging systems. Point spread functions are evaluated here through their moments. But two problems impede the use of this method successfully: the definition of the integration area and the assignment of adequate values to the limits of the area. The current presentation describes a method to overcome these problems: through clipping the background noise is suppressed, and the use of reduced coordinates introduces adequate scaling and normalization for the calculation of the moments. Associated density functions are defined to perform the symmetry analysis of the central disc and the ring structure of the point spread function separately. Their geometric parameters are determined from the moments and are used as symmetry descriptors. Experimental results of the evaluation of microscope objectives are presented.

Paper Details

Date Published: 1 January 1993
PDF: 8 pages
Proc. SPIE 1781, Specification and Measurement of Optical Systems, (1 January 1993); doi: 10.1117/12.140984
Show Author Affiliations
R. Castaneda, Univ. Nacional de Colombia Seccional de Medellin (Germany)
Juergen Kross, Technical Univ. of Berlin (Germany)

Published in SPIE Proceedings Vol. 1781:
Specification and Measurement of Optical Systems

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