Patent ID: 6476934
Filing Date: 2002-11-05
Classification: G06K,H04N

Abstract:
A method of processing an image, said image comprising a plurality of pixels, said method comprising the steps of:(a) determining an output value of a first current pixel, which is not at an edge of the image, using a first influence value for a first current pixel which equals a first sum, over a first set of pixels, of the product of a pixel weight value and a corresponding pixel value, where the pixel weight value is substantially equal to a weight factor raised to the power of the distance of the pixel from the first current pixel; and (b) determining an output value for a second current pixel, using a second influence value determined as either: (i) a product of a weight value reducing factor and the first influence value, or (ii) a product of a weight value reducing factor and the sum of the first influence value and a value for the first current pixel, so that the second influence value equals a second sum over a second set of pixels of the product of a pixel weight value and a corresponding pixel value, where each pixel weight value is substantially equal to a weight factor raised to the power of the distance of the pixel from the second current pixel.