Citation:
Martin, Field, Valentine, Stephanie, Linsey, Julie, Hammond, Tracy. "Sketch recognition algorithms for comparing complex and unpredictable shapes." IJCAI. 2011.
Summary:
Mechanix works on both free body diagrams and Trusses. For non truss shapes, it uses a geometric approach. A combination of the Hausdorff distance, modified Hausdorff distance and Tanimato coefficient determines similarities between new sketch and posted solution of body comparison. Adjacency graph is used for comparing the student's truss and reference solution, in addition to the sketch.
Discussion:
The paper efficiently describes identification and comparison of body and trusses. Using adjacency graph and BFS seem reasonable for comparison. This paper deals with free body diagrams and trusses only. The scope could be increased to other shapes as well.
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