Patent ID: 8619248
Filing Date: 2013-12-31
Classification: G01M

Abstract:
1. A method for obtaining image mapping of an Ultra Wide-Angle (UWA) lens, having an optical axis and a field of view, said method comprising: installing a calibration dome, wherein said dome has an axis of symmetry, a ring shaped base, and an inner surface graded with a plurality of markers; placing the lens at the center of the base facing the calibration dome, such that the optical axis of the lens coincides with the axis of symmetry of the dome and the field of view of the lens is encompassed by the dome; capturing a picture of the inner surface of the calibration dome through the UWA lens; identifying image of each of the plurality of markers in the picture; computing centroid of the image of each of the plurality of markers; and fitting coordinates of the centroids to a functional basis.