Abstract: A scene containing one or more targets for simulated target practice is pographed in a special motion picture camera such that only one half of each frame is exposed. After reversal development, a transparent template having two sets of aligned, spaced-apart cross-hairs is positioned over the film such that the upper set of cross-hairs is aligned with one of the recorded targets. Then, using the lower pair of cross-hairs as a guide, a pin-hole is punched in the unexposed i.e. opaque portion of the frame. This action is repeated for every frame in the film, altering the size of the dot as need be, as the target moves towards or away from the camera.

Abstract: A method of predicting the filter pack correction required to print a color ilm that has been exposed at any illuminant color temperature is provided without the need for a grey card in the scene.This method involves first the experimental determination of the correction filter pack required to produce a grey print from any of the following: the clear unexposed portion of the negative, an image of a continuous wedge or step tablet exposed at a known color temperature on a sensitometer, or the image of a grey card on a roll of film that was exposed at a known color temperature. The red, blue, and green densities of the grey card, or a particular exposure on the characteristic curve, are added to the densities of the correction filter pack to obtain a value called the Total Negative Grey. In the case of the clear portion of the negative, a correction factor of 0.02 green and 0.13 blue must be added to the base fog densities before the densities of the filter pack are added.

Abstract: A photo-reconnaissance/surveillance system in which the landscape to be sned is photographed on color film. The film is then developed in a highspeed processor and scanned by photosensors. Illuminations for the sensors is provided by a plurality of point sources of light. Colored filters e.g., a green filter and a blue filter, are alternately interposed between the light sources and the film. A logic circuit compares the transmission through the film for both light conditions and, thus, can detect the presence of a target, if the color signature of the target is known a priori.

Abstract: A method of approximating the characteristic curves of a color film exposed at a variety of color temperatures is provided.The method involves the use of a linear curve which relates the .DELTA. log E change of blue and green exposure with change of color temperature. This linear curve is derived experimentally from the characteristic curves obtained by exposing several color negative films to a sensitometer, including a step tablet and a means for varying color temperatures. The films are exposed at color temperatures ranging from 2900.degree.K to 6700.degree.K and then processed in a color developer. Transmission densities of the developed film to red, green, and blue light are determined with a densitometer and the results plotted as a curve relating red, blue, and green density to relative log exposure. These characteristic curves are then analyzed by placing them over the curves obtained at 6700.degree.K so that the red curves are superimposed.