FALSE COLOR EDITING TECHNIQUE FOR RASTER IMAGE DISPLAY.

Abstract

False coloring of raster images is the assignment of color interpretation to pixel values. This will increase the utility of information stored in the image which is usually a gray-level image. Examples are LANDSAT images, Computed Tomography images, Digital Fluoroscopy X-ray images, and so forth. This assignment is best implemented by use of color lookup table, which is positioned between the refresh memory and signal generators for the three color primaries in a color graphics display device. We first discuss the color space of CRT display devices, and suggest a model for designing a color path in that space. A second phase is to devise a mapping into that color path from the range of pixel values in a given image. Several techniques, some graphical, and some textual, for doing that interactively are presented.