Zusammenfassung
Three-dimensional reconstruction of general solid food materials was
performed using a reverse engineering method based on a surface cross-sectional
design. Digital images of cross-sections of irregular multi-dimensional
foodstuffs were acquired using a computer vision system, and image
processing was performed to obtain the actual boundaries. These boundaries
were then approximated by closed B-spline curves, which were assembled
through a lofting technique to construct a geometrical representation
of food materials. Considering the reconstructed objects, a procedure
based on finite element method was developed to estimate the surface
area and volume. The developed finite element method approach was
validated against experimental volume values of apples and meat pieces,
obtaining an estimation error less than 2%. Surface area prediction
equations were proposed from estimated surface area values and weight
and volume measurements. Good agreement was found with previously
reported results. � 2007 Elsevier Ltd. All rights reserved.
Nutzer