Photographic Image Simulation

This work was presenled in full at a meeting of the Scientific and Technical Group of the Royal Photographic ocicly in March 1963 at the University of ambridge.

Abstract

A photogrophic-image simulation technique is described with which phatographs have been generated having prescribed spread function, granularity. tonal scale and image size or scale. Each of these image-strucwre factors can be both varied and accurately measured independently of one another. The simulation technique is a modified contact-printing process wherein the image of the original is selectively altered to form the reproduction by control of the intensity distribution of the light source area. the distances between the light source and the original and the degree af contact between the original and the reproduction. Granularity is simulated by covering the print film with a film sheet bearing an image of grain structure. This technique has proved to be a valuable tool in image-evaluation studies.

Notes

This work was presenled in full at a meeting of the Scientific and Technical Group of the Royal Photographic ocicly in March 1963 at the University of ambridge.