Image system for three dimensional, 360 DEGREE, time sequence surface mapping of moving objects

Patent · Thu Jan 01 00:00:00 EST 1998

OSTI ID:872059

Lu, Shin-Yee ^[1]

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1. Pleasanton, CA

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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5852672
• OSTI ID: 872059
• Country of Publication: United States
• Language: English

Related Subjects

image
dimensional
360
degree
time
sequence
surface
mapping
moving
three-dimensional
motion
camera
comprises
light
projector
placed
synchronous
video
cameras
focused
object-of-interest
shines
sharp
pattern
vertical
lines
ronchi
ruling
appear
bent
virtue
shape
relative
geometry
frame
captured
computer
memory
analyzed
pre-calibrated
solved
matching
intersections
projected
orthogonal
epipolar
corresponding
horizontal
rows
frames
reconstruction
displayed
monitor
screen
coverage
theobject-of-interest
additional
sets
projectors
distributed
120
apart
video camera
time sequence
video cameras
vertical lines
horizontal rows
surface shape
video frame
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