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Geometry modelling of food materials from magnetic resonance imaging

Author:
Goñi, Sandro M., Purlis, Emmanuel, Salvadori, Viviana O.
Source:
Journal of food engineering 2008 v.88 no.4 pp. 561-567
ISSN:
0260-8774
Subject:
beef, databases, foods, image analysis, lamb carcasses, magnetic resonance imaging, models, muscles, pig carcasses
Abstract:
Three-dimensional geometric models of irregular food were constructed to contribute to process modelling area shedding light on geometry development aspects. Object reconstruction was performed using a cross-sectional design technique from magnetic resonance images. Boundaries of cross-section images were approximated by B-Spline curves after an image processing procedure. Then, a non-uniform rational B-Spline based model representing the food material was built using a lofting method by interpolating all B-Spline curves. This methodology was applied to lamb, pork and chicken carcasses, and beef semitendinosus muscle. The obtained geometric models were visually compared with real samples showing a very good agreement. The presented methodology can be used to generate a geometry database saving efforts and decreasing error associated to experimental measurements.
Agid:
435464