Method and device for geometric calibration of CCD cameras

US6377298B1 · kind B1 · utility

Assignee

• Deutsche Forschungsanstalt Für Luft - und · DE

Inventors

• Martin Scheele · Brieselang, DE
• Thomas Terzibaschian · Berlin, DE

Key dates

• Filing date: Jun 29, 1998
• Grant date: Apr 23, 2002
• Expiry date: Jun 29, 2018

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N17/002
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A device for the geometric calibration of a CCD camera, which includes a coherent light source and a synthetic hologram arranged relative to the coherent light source so that the hologram generates a real three-dimensional test structure f(x,y,z) around a focal plane of the CCD camera using coherent light. A method for geometric calibration of a CCD camera using a coherent light source and a synthetic hologram which includes the steps of calculating the synthetic hologram to provide a well-defined ideal three-dimensional test structure f(x,y,z) taking into account idealized camera optics of the CCD camera to be calibrated, illuminating the hologram using the coherent light source so that a real three-dimensional test structure f(x,y,z) is generated around a focal plane of the CCD camera, and evaluating in parallel a plurality of sensor pixels by determining a respective section plane through the real test structure f(x,y,z) from individual image information of each of the plural sensor pixels.