Method and Device for Identifying and Calibrating Panoramic Optical Systems
Assignee6115187 Canada Inc.
InventorsJean-Claude ARTONNE, Mathieu VILLEGAS, Pierre KONEN, Simon THIBAULT
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Abstract
A method for identifying a panoramic optical system enables its intrinsic characteristics to be semi-automatically or automatically determined so as to be able to subsequently apply the digital processes for appropriate corrections of the perspectives and distortions specific to the identified panoramic optical system. The panoramic optical system has a marking device visible from outside through a front lens, allowing identification by an operator, and/or a marking device directly projected on the image plane through the optical system, for automatic identification and calibration.
Claims49
An optical system comprising:
- an image sensor;
- a front lens projecting an image of a scene onto the image sensor;
- and
- a marking device introducing into the optical system at least one mark outside of the scene, the at least one mark being visible in the image provided by the image sensor at the same time as the scene.
A method of identifying an optical system projecting an image of a scene onto an image sensor, the method comprising:
- introducing into the optical system at least one mark outside of the scene, the mark being visible in the image supplied by the image sensor at the same time as the scene;
- searching for at least one mark in the image supplied by the image sensor;
- identifying at least one of the marks found;
- and
- identifying the optical system from the identified mark.
Dependencies are inferred from the claim text.