Computing Size Functions from Edge Maps
International Journal of Computer Vision
Proceedings of the Second Joint European - US Workshop on Applications of Invariance in Computer Vision
Sketch Up: Towards Qualitative Shape Data Management
ACCV '98 Proceedings of the Third Asian Conference on Computer Vision-Volume I - Volume I
ACCV '98 Proceedings of the Third Asian Conference on Computer Vision-Volume I - Volume I
Size Functions for Image Retrieval: A Demonstrator on Randomly Generated Curves
CIVR '02 Proceedings of the International Conference on Image and Video Retrieval
A complete keypics experiment with size functions
CIVR'05 Proceedings of the 4th international conference on Image and Video Retrieval
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Size functions are functions from the real plane to the natural numbers useful for describing shapes of objects. They allow to translate the problem of comparing shapes to the problem of comparing functions, that is a much simpler task. In order to perform the comparison between size functions we present a method to measure the energy necessary to deform size functions into each other. Minimizing such an energy allows for a measure of the similarity between shapes. Some experimental results concerning the comparison of free hand-drawn sketches are shown.