STUDY OF IMAGE-EVALUATION TECHNIQUES.
Abstract
The primary goal of this program is the development of a valid computational means for determining object to image relationships in photooptical reconnaissance systems. Our attention is currently restricted to the lens-film combination. The investigation has been primarily based on linear transfer function, or spatial frequency, analysis. In the area of lens response, the basic linearity of the optical system makes this analysis valid, if not completely sufficient (e.g., veiling glare is not accounted for by the lens transfer function). In the areas of film response, nonlinear analysis must be resorted to in order to account for the fundamental nonlinearity attested to by the D-log E curve as well as for the much less well understood effects of finite chemical diffusion rate properties commonly called adjacency effects. Because of the many problems in film response analysis, the major emphasis in the program is on emulsion studies. Our research activity is generally separable into lens, film, lens-film system, and computer programming categories. In essence, our experimental and theoretical studies in the lens, film, and lens-film system areas are to provide the conceptual and practical foundations for a computer program that will make possible the calculation of object to image relationships in general lensfilm systems. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 15, 1965
- Accession Number
- AD0466577