Image system for three dimensional, 360{degree}, time sequence surface mapping of moving objects
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 the object-of-interest, two additional sets of light projectors and corresponding cameras are distributed about 120{degree} apart from one another. 20 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of California (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 321200
- Patent Number(s):
- 5852672
- Application Number:
- PAN: 8-871,557
- Assignee:
- Univ. of California, Oakland, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 22 Dec 1998
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; TELEVISION CAMERAS; DESIGN; SHAPE; MEASURING METHODS; DISPLAY DEVICES; LIGHTING SYSTEMS; IMAGES; IMAGE PROCESSING
Citation Formats
Lu, S Y. Image system for three dimensional, 360{degree}, time sequence surface mapping of moving objects. United States: N. p., 1998.
Web.
Lu, S Y. Image system for three dimensional, 360{degree}, time sequence surface mapping of moving objects. United States.
Lu, S Y. Tue .
"Image system for three dimensional, 360{degree}, time sequence surface mapping of moving objects". United States.
@article{osti_321200,
title = {Image system for three dimensional, 360{degree}, time sequence surface mapping of moving objects},
author = {Lu, S Y},
abstractNote = {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 the object-of-interest, two additional sets of light projectors and corresponding cameras are distributed about 120{degree} apart from one another. 20 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 22 00:00:00 EST 1998},
month = {Tue Dec 22 00:00:00 EST 1998}
}