Abstract: Digital apparatus for generating moving grates of stimulus modulated bar patterns is disclosed. The bar patterns are modulated according to sinusoidal or other mathematical relations and can be alternately displayed as color and/or intensity variations on the display screen. Multiple display images, operator control of grate movement, and the use of image processing apparatus are also incorporated.

Abstract: An image processing apparatus for aiding analysis of images through the introduction of additonal physically displaced image elements in complementary color which are generated by digital processing of original image elements. The added elements and original image are viewed stereoscopically on an electronic reconstructed image display.

Abstract: The mapping provides a capability for quantifying an external scene in a manner equivalent to the allocation at perceptual bandwidth in the human retina. The device samples the scene, either photographically or by video; records a digital version of the scene, processes the digital version so that the effects of the distribution rods in the retina provides the weighting for allocating signal processing bandwidth differentially across the scene in accordance with human physiological data, and produces a recording of the processed digital image.The processing uses a selected acuity factor as a parameter, a neighborhood is assigned to each pixel, with a radius r equal to (1.0+(acuity factor.times.R))/2.0, where R is the distance from the center of the image. The digital values of all pixels in the neighborhood are summed and the sum is divided by the number of pixels in the neighborhood to obtain an average value. This value is then assigned to the pixel in forming a processed image frame.