HIGH ACUITY STUDY.
Abstract
The photographic system is sufficiently complex as to require that the quality of such a system be determined in an essentially analytical way in conjunction with limited experimental work; an entirely experimental approach to this problem would necessitate a prohibitive number of experiments. In the course of this study it was determined that information theory offers a sound theoretical basis for developing an analytical quality criterion that not only depends upon the system variables mentioned above but also incorporates the fact that the values taken on by many of these system parameters are not predictable in a deterministic way and instead vary in a statistical way. The Linfoot-Fellgett criterion is shown to provide a relatively simple, single expression for the information content of the entire photographic system. Not only does the two-dimensional system transfer function appear as a function of field angle in the formulation but also terms representing the two-dimensional Weiner spectrum and size of the target, the Weiner spectrum of the film granularity, and the system magnification appear as well. Using the Linfoot-Fellgett criterion, the information density was determined at three field angles for several photographic systems. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1968
- Accession Number
- AD0833891
Entities
People
- Harry H. Avant
- John D. Calvert
- John H. Atkinson