12 October 1977 Review Of German Standards On Image Assessment
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Proceedings Volume 0098, Assessment of Imaging Systems I; (1977) https://doi.org/10.1117/12.955293
Event: Assessment of Imaging Systems, 1976, London, United Kingdom
A description is given of the essential points of DIN 58 185 "Optical Transfer Function", in particular of the principles of OTF measurement, the necessary equipment and problems likely to be encountered during measurement. Items of special importance are incoherent illumination, linearity especially of the electronic system and the existence of an isoplanatic region. These have to be checked before measurement. Other points of interest are the lowest spatial frequency for normalization, the selection of azimuth in the test pieces and the effect of auxiliary systems, in so far as these are used. When measuring phase, a distinction must be made between phase and distortion. Calibration should ensure that phase starts with a horizontal tangent. Information is given on the effect of veiling glare.
© (1977) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Paul Kuttner, Paul Kuttner, } "Review Of German Standards On Image Assessment", Proc. SPIE 0098, Assessment of Imaging Systems I, (12 October 1977); doi: 10.1117/12.955293; https://doi.org/10.1117/12.955293


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