Paper
22 November 1977 Data Extraction From Film Using Optical And/Or Digital And/Or Electronic Devices
Peter T. Gough, Brian J. Thompson
Author Affiliations +
Abstract
The current interest in applying hybrid techniques to data extraction from film is discussed and reviewed. The three basic operations of power spectral analysis, spatial filtering, and correlation are described. Particular emphasis is placed on how these operations can be carried out with an appropriate combination of optical with either digital (binary) or electronic (analogue) subsystems. Some examples will illustrate the procedure.
© (1977) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Peter T. Gough and Brian J. Thompson "Data Extraction From Film Using Optical And/Or Digital And/Or Electronic Devices", Proc. SPIE 0117, Data Extraction and Classification from Film, (22 November 1977); https://doi.org/10.1117/12.955650
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KEYWORDS
Image filtering

Optical filters

Fourier transforms

Diffraction

Signal processing

Modulation

Electronic components

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