Methods and apparatus for using image data to determine camera l

Details Methods and apparatus for using image data to determine camera l Methods and apparatus for using image data to determine camera l

1995-03-31

1997-12-16

Boudreau, Leo

Image analysis

Applications

Range or distance measuring

382154, 348 42, 348 47, 356 3, G01C 300

Patent

active

056994443

ABSTRACT:
Methods and apparatus for accurately surveying and determining the physical location of objects in a scene are disclosed which use image data captured by one or more cameras and three points from the scene which may either be measured after the images are captured or may be included in the calibrated target placed in the scene at the time of image capture. Objects are located with respect to a three dimensional coordinate system defined with reference to the three points. The methods and apparatus permit rapid set up and capture of precise location data using simple apparatus and simple image processing. The precise location and orientation of the camera utilized to capture each scene is determined from image data, from the three point locations and from optical parameters of the camera.

REFERENCES:
patent: 4965840 (1990-10-01), Subbarao
patent: 4969106 (1990-11-01), Vogel et al.
patent: 5146346 (1992-09-01), Knoll
patent: 5259037 (1993-11-01), Plunk
patent: 5525883 (1996-06-01), Avitzour
Wolfgang Boehm et al., Geometric Concepts for Geometric Design, 1994, Chapter 8: Reconstruction, pp. 71-76.
David F. Rogers et al., Mathematical Elements for Computer Graphics, Second Edition, 1990, pp. 200-207.
Manual of Photogrammetry, Fourth Edition, 1980, American Society of Photogrammetry, pp. 54-57.

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