专利名称：Precision optical systems with performance
characterization and uses thereof
发明人：Douglas Alan Reneker,Christopher
Cotton,Damon W. Diehl
申请号：US11222562申请日：20050908公开号：US07496241B1公开日：20090224
专利附图：
摘要：An optical system includes a reference projector that projects collimatedbeams of light into the optical system entrance aperture which are imaged by an image
recording device. The beams produce fiducial images present in every image captured bythe imaging recording device. The fiducial images can be used to characterize theperformance of the optical system and derive distortion correction coefficients. Thedistortion correction coefficients can be applied to a portion of an image, such as a groupof pixels, or to the entire image, to thereby compensate for distortions in the opticalsystem. In some embodiments, e.g., airborne cameras, the projector is rigidly coupled toan inertial measurement unit. The ability of the airborne camera to perform objectgeolocation from imagery is improved. The fiducial images enable optical systemperformance to be characterized and distortion correction coefficients to be obtainedand thereby improve the accuracy of a ray angle calculation to the object of interest.Furthermore, the ray angle can be related to an inertial measurement system coordinatesystem using a direction cosine matrix.
申请人：Douglas Alan Reneker,Christopher Cotton,Damon W. Diehl
地址：Naperville IL US,Mendon NY US,Rochester NY US
国籍：US,US,US
代理机构：McDonnell Boehnen Hulbert & Berghoff LLP
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