Global to push GA events into
skip to main content

Title: Image system for three dimensional, 360{degree}, time sequence surface mapping of moving objects

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:
OSTI Identifier:
321200
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 440600; PA: EDB-99:031376; SN: 99002058474
Patent Number(s):
US 5,852,672/A/
Application Number:
PAN: 8-871,557
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 22 Dec 1998
Research Org:
University of California
Sponsoring Org:
USDOE, Washington, DC (United States)
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