Image analysis – Applications – 3-d or stereo imaging analysis
Patent
1997-06-09
1998-12-22
Moore, David K.
Image analysis
Applications
3-d or stereo imaging analysis
382254, 356376, G01B 1124, G06T 1700
Patent
active
058526722
ABSTRACT:
A three-dimensional motion camera system comprises a light projector placed between two synchronous video cameras all focused on an object-of-interest. The light projector shines a sharp pattern of vertical lines (Ronchi ruling) on the object-of-interest that appear to be bent differently to each camera by virtue of the surface shape of the object-of-interest and the relative geometry of the cameras, light projector and object-of-interest Each video frame is captured in a computer memory and analyzed. Since the relative geometry is known and the system pre-calibrated, the unknown three-dimensional shape of the object-of-interest can be solved for by matching the intersections of the projected light lines with orthogonal epipolar lines corresponding to horizontal rows in the video camera frames. A surface reconstruction is made and displayed on a monitor screen. For 360.degree. all around coverage of theobject-of-interest, two additional sets of light projectors and corresponding cameras are distributed about 120.degree. apart from one another.
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Main Richard B.
Moore David K.
The Regents of the University of California
Werner Brian P.
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