TRANSFER FUNCTIONS OF SPECTROZONAL AERIAL FILMS,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
Pagination or Media Count:
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 DX the curves were recalculated according to data of corresponding sensitometric determinations into curves of EX. 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.
- Cartography and Aerial Photography