Patent ID: 7266249
Filing Date: 2007-09-04
Classification: G06K,G06T

Abstract:
1. A method for improving quality of images, the method comprising the steps of: a. smoothing an input image; b. generating a first list of pixels, the first list of pixels containing pixels selected from the input image, the selection being based on eigen values of Hessian matrix of the input image pixels, the Hessian matrix being calculated at a predefined coarse scale space value; c. generating a second list of pixels, the second list of pixels containing pixels selected from the input image, the selection being based on eigen values of Hessian matrix of the input image pixels, the Hessian matrix being calculated at a predefined fine scale space value; and d. processing the first list of pixels and the second list of pixels to obtain an output image with improved quality wherein the step of processing comprises the steps of: