Off-line Sketch Interpretation
Matt Notowidigdo, Robert C. Miller · 2004
We present a novel approach to creating structured dia-grams (such as flow charts or object diagrams) by com-bining an off-line sketch recognition system with the user interface of a traditional structured graphics edi-tor. Our system, called UDSI (user-directed sketch in-terpretation), aims to provide drawing freedom by al-lowing the user to sketch entirely off-line using a pure pen-and-paper interface. The results of the drawing can then be presented to UDSI, which recognizes shapes, lines, and text areas that the user can then polish as desired. The system can infer multiple interpretations for a given sketch to aid during the user’s polishing stage. The UDSI program uses a novel recognition architecture that combines low-level recognizers with domain-specific heuristic filters and a greedy algorithm that eliminates incompatible interpretations.