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Proceedings Paper

Equipment for measurement of the granularity of photographic materials
Author(s): Jaromir Hrdy; Jaroslav Pospisil
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Paper Abstract

The realized equipment for measurement of the granularity of black-and-white and color photographic materials is based on low-speed rotation of the optically transmitting granularity sample and microphotometrical scanning of its image. The obtained electrical analogous signal is amplified and converted to the digital form by an analog-to-digital converter and the processed by a special computer system. It is a modern digital-microphotometrical rotational granulometer with originally designed mechanical sample stage and electronical processing system which is useful for the laboratory practice. Its outputs consist of random optical transmittance data of the granularity sample under measurement their mean value and dispersion.

Paper Details

Date Published: 7 March 2001
PDF: 5 pages
Proc. SPIE 4356, 12th Czech-Slovak-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, (7 March 2001); doi: 10.1117/12.417865
Show Author Affiliations
Jaromir Hrdy, Palacky Univ. (Czech Republic)
Jaroslav Pospisil, Palacky Univ. (Czech Republic)


Published in SPIE Proceedings Vol. 4356:
12th Czech-Slovak-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics
Jan Perina; Miroslav Hrabovsky; Jaromir Krepelka, Editor(s)

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