Comments
PaleoSketch is a primitive shape recognizer and beautifier. It supports recognition of several basic geometric types: Lines, Polylines, Cirles, Ellipses, Arcs, Curves, Spirals and Helixes. The recognizer takes input strokes and gives several possible interpretations depending on how ambiguous the stroke is. Paleo uses a few new features for recognition, mostly to distinguish between Polylines and Curves. These features are normalized distance between direction extremes (NDDE) and direction change ratio (DCR), both of which are used to find spikes in the direction graph that would differentiate between a Polyline and Curve.
Discussion
Paleo is very accurate at classification (99.89%) although it does not always present the correct interpretation as the primary interpretation. Still an overall recognition rate of 98.56% is very impressive and shows that Paleo can form a very solid basis for higher level recognition systems. I find this system to be a lot more useful for actual sketch recognition than most of the previous papers we have read. I understand that most of those are gesture recognizers, and that is all very well, but Paleo is much more relevant for complete sketch recognition.
No comments:
Post a Comment