Paper drawings to 3-D CAD: a proposed agenda

The authors try to explain why conversion of engineering drawings into CAD format has been stuck for so long in low-level operations such as vectorization, basic layer separation, and very limited symbol recognition, and what can be done to improve this situation. Based on their own expertise in syntactic and semantic analysis of technical drawings, they propose a scheme for achieving high-level conversion of engineering drawings into 3-D CAD models.<
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