Abstract: A high spatial and dynamic resolution color image recording system and method for computer generated displays includes a low cost personal computer having a low resolution display monitor adapter and a photographic image recorder coupled to receive low resolution fields of a video image in intensity dependent time varying steps to produce a high resolution composite image. Spatial resolution is improved by providing a separate image for each primary color component as a plurality of interlaced fields. High dynamic resolution is attached for each field by generating each field on a single intensity monochrome raster scan display and exposing the image of a field through a primary color filter in a plurality of intensity dependent steps with the total exposure time for each different color intensity being proportional to the intensity thereof. A gamma compensation is utilized to compensate for the particular optical characteristics of the display, filter and photographic film.

Abstract: Gamma correction in an imaging system which provides photographic reproductions of images represented by video signals is achieved by controlling the duration of exposure of a constant intensity scanning beam. A moving threshold signal is swept at a varying rate corresponding to a gamma correction curve between opposite limits over a given total exposure interval, as the image is repeatedly presented. The instantaneous amplitude of the video signal is compared to threshold signal and the results of the comparison used to control whether the beam is on or off for a given picture area. The gamma correction curves are advantageously presented as numerical sequences defining interlinked incremental segments of different slope.

Abstract: Apparatus and method for producing color hardcopy from computer or video generated electronic information and utilizing a film with a repeating color stripe pattern on one side and an unexposed silver halide layer on the other side. A laser beam of a single monochromatic frequency scans across the unexposed silver halide layer from the side opposite the color stripes, the beam being smaller than an individual color stripe and being modulated in intensity to provide a variable strength latent image in the silver halide corresponding to red, blue and green intensity components of the video image so that the resulting film can be illuminated from either side to be viewed in color after processing.