Resource evaluation tools 

Conclusion.

Original CT scan sets of fresh Norway Spruce logs from LUT can be efficiently processed with low cost workstations. Storage mass was dropped down without lose of any useful data and adapted image processing techniques lead to automatic extraction of various tissues and anatomic features. They were represented by realistic 3D reconstruction. The quantitative geometrical outputs were defined for resource evaluation and sawing simulation. 
We have designed a portable interactive platform tool for Norway Spruce resource evaluation. It is based on predictive inner structure models developed by Nancy ERQB team. 
The construction of high level libraries and the integration of these models lead to a internal structure generator on one side, and, on the other side, to a graphical, interactive property visualisation tool that includes sawing simulation.

Dissemination activities.
 

Communication: M.. Jaeger, J.M. Leban, P.Borianne, S. Chemouny, L. Saint André. 3D stem reconstruction from CT scan exams. From log external shape to internal structures. In: Third Workshop IUFRO WP S5.01-04. Biological improvement of wood properties, La Londe-Les-Maures, France, september 5-12, 1999.
WEB pages:  http://ciradmeb.homepage.com/emeb430.htm that includes downloading of the Ct scanning reconstruction software (windows 95 – 98 – NT version). In progress for the resource evaluation tool.
Mail: evaluation software sent to SLU and LUT partners.
CDROM:Full package software Converter +  3D reconstruction + 2 full exams. In progress.

leban@nancy.inra.fr