Patent ID: 6144778
Filing Date: 2000-11-07
Classification: H04N

Abstract:
A method of forming pixel weighted transition regions in multi-pass scanning of an original to ameliorate swath scanner banding at swath boundaries, the method comprising the steps of:capturing pixel data of a first swath;capturing pixel data of a second swath such that the second swath includes an overlap swath region with the first swath by a predetermined number of pixels;comparing pixel data of the overlap swath region captured during the step of capturing pixel data of a first swath with pixel data of the overlap swath region captured during the step of capturing pixel data of a second swath;determining a weighting factor based upon differences between identical pixel data points obtained during the step of comparing;applying the weighting factor to pixel data of the overlap swath region captured during the step of capturing pixel data of a first swath; andsubstituting weighted pixel data from said step of applying for overlap swath region pixel data of said first swath.