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Title: 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 theobject-of-interest, two additional sets of light projectors and corresponding cameras are distributed about 120.degree. apart from one another.

Inventors:
 [1]
  1. (Pleasanton, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
872059
Patent Number(s):
5852672
Assignee:
Regents of University of California (Oakland, CA) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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; /382/356/

Citation Formats

Lu, Shin-Yee. Image system for three dimensional, 360 DEGREE, time sequence surface mapping of moving objects. United States: N. p., 1998. Web.
Lu, Shin-Yee. Image system for three dimensional, 360 DEGREE, time sequence surface mapping of moving objects. United States.
Lu, Shin-Yee. Thu . "Image system for three dimensional, 360 DEGREE, time sequence surface mapping of moving objects". United States. https://www.osti.gov/servlets/purl/872059.
@article{osti_872059,
title = {Image system for three dimensional, 360 DEGREE, time sequence surface mapping of moving objects},
author = {Lu, Shin-Yee},
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 theobject-of-interest, two additional sets of light projectors and corresponding cameras are distributed about 120.degree. apart from one another.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

Patent:

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