Interpreting Sloppy Stick Figures by Graph Rectification and Constraint-Based Matching

  • Authors:
  • James V. Mahoney;Markus P. J. Fromherz

  • Affiliations:
  • -;-

  • Venue:
  • GREC '01 Selected Papers from the Fourth International Workshop on Graphics Recognition Algorithms and Applications
  • Year:
  • 2001

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Abstract

Programs for understanding hand-drawn sketches and diagrams must interpret curvilinear configurations that are sloppily drawn and highly variable in form. We propose a two-stage subgraph matching framework for sketch recognition that can accommodate great variability in form and yet provide efficient matching and easy extensibility to new configurations. First, a rectification stage corrects the initial data graph for the common deviations of each kind of constituent local configuration from its ideal form. The model graph is then matched directly to the data by a constraint-based subgraph matching process, without the need for complex error-tolerance. We explore the approach in the domain of human stick figures in diverse poses.