An optical method for grey level pseudocolor encoding in real time based on the scattering properties of film grain noise is proposed. The light scattered by the film is studied by means of a lognormal model applied to the wave front emerging from the object. Three beams, each with a primary color, are used to illuminate the original black-and-white picture, giving a pseudocolored image.
© 1983 Optical Society of America
J. A. Mendez and M. Nieto-Vesperinas, "Light scattering by film grain noise: application to grey level optical pseudocoloring," Appl. Opt. 22, 2068-2074 (1983)