Patent ID: 7362969
Filing Date: 2008-04-22
Classification: G02B,G06T

Abstract:
1. A method of calibrating an omnidirectional camera comprising: collecting calibration points based on points having known positions in a physical environment using the omnidirectional camera; and determining at least one correction factor based on the plurality of calibration points, each correction factor being used to correct a deviation of the omnidirectional camera from an ideal camera model, wherein the omnidirectional camera includes a camera lens system and a curved mirror, a reflective-side of the curved mirror facing the camera lens system, and the determining the at least one correction factor includes computing a distance from a focal point of the curved mirror to a center-of-projection of the camera lens system, the focal point of the curved mirror being located at a side opposite the reflective-side of the curved mirror and at a distance from the curved mirror along the curved mirror's central axis.