Patent ID: 7536053
Filing Date: 2009-05-19
Classification: G06T

Abstract:
1. A method of quantifying nonlinear field of view distortions in a digital imaging system comprising steps of: mounting a test artifact having an imageable feature in a position for undergoing relative motion with respect to a digital imaging system; optically imaging the imageable feature of the test artifact with the digital imaging system; relatively moving the imageable feature of the test artifact through a field of view of the digital imaging system; monitoring changes in the locations of a plurality of points along the imageable feature of the test artifact appearing within an image space of the digital imaging system; monitoring changes in the location of the test artifact within an object space of the digital imaging system as a measure of the relative motion imparted to the test artifact; and comparing changes in the monitored locations of the plurality of points along the imageable feature of the test artifact appearing in the image space with changes in the monitored location of the test artifact in the object space to quantify nonlinear field of view distortions in the digital imaging system, wherein the step of comparing changes includes quantifying nonlinear field of view distortions in the digital imaging system independently of exact dimensions of the test artifact.