Summary
This paper focuses on the initial steps of sketch recognition. It proposes a method to find corners in a sketch. Sezgin combines both curvature and speed measures to generate a set of potential corners.
The second feature in their method is a curve handling. It model curves as Bezier curves by approximating the control points using LS method.
The system also performs stroke beautification so the small noises of the pen while drawing the shapes are eliminated and as a result the drawn sketches will look better
Finally, the system does some basic object recognition on circles, rectangles, etc.
Discussion
This paper is one of the earliest in corner detection which takes advantage of both speed and curvature. About the segmentation, use of Bezier curves for segments is a good choice for its flexibility. Finally the results are promising
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