Existed methods can't be used for recognizing simple polyhedron. In this paper, three problems are researched. First, a
method for recognizing triangle and quadrilateral is introduced based on geometry and angle constraint. Then Attribute
Relation Graph (ARG) is employed to describe simple polyhedron and line drawing. Last, a new method is presented to
recognize simple polyhedron from a line drawing. The method filters the candidate database before matching line
drawing and model, thus the recognition efficiency is improved greatly. We introduced the geometrical characteristics
and topological characteristics to describe each node of ARG, so the algorithm can not only recognize polyhedrons with
different shape but also distinguish between polyhedrons with the same shape but with different sizes and proportions.
Computer simulations demonstrate the effectiveness of the method preliminarily.