Accession Number : AD0706157
Title : TRANSFER FUNCTIONS OF SPECTROZONAL AERIAL FILMS,
Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
Personal Author(s) : Smirnov,A. Ya. ; Nomokonova,V. F.
Report Date : 21 JAN 1970
Pagination or Media Count : 5
Abstract : The frequency-contrast transfer functions were determined of layers of spectrozonal aerial films SN-6, SN-23, and Ektachrome Infrared Aerial Film. The determination method consisted in microphotometry of bands of erosion of the image of a knife-edge through narrow-zonal light filters and obtaining curves of D(X); the curves were recalculated according to data of corresponding sensitometric determinations into curves of E(X). Proceeding from the theory of the boundary function of a jump in brightness, the contrasts were calculated between light and dark shadings in the image of Pi-shaped periodic gratings of different frequency and determined the transfer function. The relative error of determination was about 5 percent.
Descriptors : (*PHOTOGRAPHIC FILM, *PHOTOGRAPHIC CONTRAST), (*AERIAL PHOTOGRAPHY, PHOTOGRAPHIC FILM), RECONNAISSANCE FILM, INFRARED FILM, USSR
Subject Categories : Cartography and Aerial Photography
Distribution Statement : APPROVED FOR PUBLIC RELEASE