Interpreting non-3-D line drawings

摘要

This paper shows how to create a small number of natural interpretations for non-3-D line drawings. If all constraints are removed, there is an infinite number of possible interpretations. However, humans instinctively create a limited number of interpretations. In order to obtain these interpretations, it is first necessary to check whether the line drawing requires figural completion. To ensure that natural figural completion is carried out, restrictions on figural completion, possible completion paths, and an actual process for completing figures are introduced. Next, constraints are introduced to reduce the number of interpretations. These include constraints concerning line elements, duplication, connectedness, inclusiveness, closure, good figures, and line sharing. The results of a psychological experiment show that the proposed method can create a small number of natural interpretations that correspond to human visual perception fairly well.