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Abstract

The invention features a method for determining a set of post-registration correction terms that correct for artifacts introduced by an algorithm used to register images represented by values at an array of points, the method including: providing a series of images of a reference object; registering the images with each other using the algorithm to produce a series of registered images; and determining the set of post-registration correction terms based on variations among the registered values of the registered images at selected points. The invention also features a method for correcting artifacts introduced into images registered by an algorithm that repositions unregistered images along a selected coordinate, wherein the algorithm repositions each of the unregistered images along the selected coordinate by a repositioning value, the method including: comparing a variation among the image values of the registered images at a selected region of the array with a variation expressed by a superposition of at least one post-registration correction terms, wherein one of the post-registration correction terms is a vector equal to the values of a polynomial in the selected coordinate at each of the repositioning values, and wherein the polynomial is a second or higher order polynomial. An image processing system can perform the methods and a computer program stored on a computer readable medium can include instructions that cause a computer to perform the methods.

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First Claim