3D
Surface Approximation |
|
Volume measurement is
an important process for various industries such
as food processing, fruit and vegetable grading,
etc. Value or price is often determined by the
size of product. Product size can be measured
optically with machine vision technology for
on-line inspection and grading systems. Most
optical grading techniques use a two-dimensional
area projection or the weight of the product to
estimate the actual product volume. These
methods are subject to measurement inaccuracy
because of the missing thickness information. We
have introduced an algorithm combines laser
triangulation technique with two-dimensional
measurement to reconstruct a three-dimensional
surface for volume measurement.
|
Project Sponsors:
|
|
Collaborators:
|
Dr. Joseph Eifert, Virginia Tech
Mr. Robert Lane, Virginia Tech
Dr. Andy Chang, Youngstown State University
|
Graduate Students:
|
Ben Westover and Pengcheng Zhan
|
Publications:
-
D.J.
Lee, J.K. Archibald, X. Xu, and P.
Zhan, “Using Distance Transform to
Solve Real-time Machine Vision Inspection
Problems”, Machine Vision and
Applications Journal, vol. 18/2, p. 85-93,
April 2007.
-
D.J. Lee, J.D. Eifert, P. Zhan, and B.P.
Westover, "Fast Surface
Approximation for Volume and Surface Area
Measurements Using Distance Transform,
Optical Engineering", vol. 42/10, p.
2947-2955, October 2003.
-
D.J.
Lee, B.P. Westover, and J.D. Eifert, "Three-dimensional
Surface Approximation from Incomplete Data
Using Distance Transform", SPIE Image
Reconstruction from Incomplete Data II, vol.
4792, p. 125-134, Seattle, WA, USA, July,
2002.
-
D.J.
Lee, R.M. Lane, and G.H. Chang, "3-D
Reconstruction for High-speed Volume
Measurement", SPIE Machine Vision and
Three-Dimensional Imaging Systems for
Inspection and Metrology, vol. 4189, p.
258-267, Boston, MA, USA, November 2000.
|
(Click
image to view paper poster)
|
|
|