Patent ID: 6477270
Filing Date: 2002-11-05
Classification: G06T

Abstract:
In a computer system, a method for converting high resolution greyscale digital image to color using low resolution color or multi-spectral image of the same object or area, said low resolution color or multi-spectral image formed of pixels each pixel having a red, a green, a blue value, comprising the steps of:(a) registering a low resolution color image to a high resolution greyscale image such that each pixel in the greyscale image corresponds to a pixel at the same location in the high resolution color image; (b) for each pixel in the high resolution greyscale image, generating three color components (red, green, blue) from the greyscale value of the pixel in the high resolution image and the red, green and blue values of the corresponding pixel in the low resolution image using a factor T calculated as a function of a ratio of total pixel value in the color image to pixel value in the greyscale image. (c) forming a high resolution color image from the generated three color components for each pixel in the greyscale image.