Patent ID: 7369711

Claim:
A method for reducing the appearance of bad pixels in an x-ray image including: acquiring a first offset image with a first frame interval; identifying synchronous bad pixels based on comparison of pixel values in said first offset image to a synchronous threshold intensity value; creating a synchronous bad pixel map including synchronous bad pixels identified from said first offset image; acquiring a second offset image with a second frame interval, said second frame interval being shorter than said first frame interval; acquiring a third offset image with a third frame interval, said third frame interval being longer than said first frame interval; offsetting said first offset image with said second offset image to produce a first offset comparison image; identifying asynchronous bad pixels in said first offset comparison image; offsetting said first offset image with said third offset image to produce a second offset comparison image; identifying asynchronous bad pixels in said second offset comparison image; and creating an asynchronous bad pixel map including said asynchronous bad pixels identified in said first offset comparison image and said second offset comparison image.