Abstract: Image data is processed by identifying a region of substantially constant color within a first image. Color variations, in terms of standard deviation about an average color, are analyzed and a similar level of variation is applied to a second image. The first image may be derived from cinematographic film, with color variations due to film grain. The second image may be a video image or a computer generated image and the application of a similar level of variation may reproduce noise similar to that present within the film due to grain. In this way, it is possible to add grain to non-filmed images so as to match said images to images derived from film.

Abstract: In an oxide isolated semiconductor structure having an epitaxial layer formed on a monocrystalline substrate, a buried, laterally extending PN isolation junction in said structure, and oxidized isolation regions extending through said epitaxial layer to said PN isolation junction, thereby to form a plurality of electrically isolated pockets of semiconductor material, a dopant is located in those regions of the semiconductor material directly adjacent the oxidized isolation regions to prevent unwanted current flow called "channeling." The region formed by this dopant is often referred to as the field predeposition region. Typically, to form the field predeposition region, a selected dopant is placed in the exposed surface regions of the epitaxial semiconductor material just prior to the formation of the oxidized isolation regions.