Patent ID: 6424751
Filing Date: 2002-07-23
Classification: G06T

Abstract:
An image processing system for reducing an image by a desired scaling factor, said image comprising a plurality of video signals each having a magnitude, the system including:an input which receives a stream of the video signals; a seed factor generator which calculates a fast scan seed factor from the scaling factor and a slow scan seed factor from the scaling factor; averaging means for determining an average magnitude associated with a set of input video signals, said set being defined by the fast scan seed factor and the slow scan seed factor, said averaging means including a fast scan adder which sums together at least a portion of the magnitudes of each video signal in the set along a fast scan direction to generate partial sums in the fast scan direction, wherein the partial sums are stored in a memory and provided alternately to the adder for incorporation into a subsequent sum corresponding to the same set or output means based on the slow scan seed factor; and output means for outputting an output video signal comprising the average magnitudes of each set.