Segmentation of free-form shapes into chains of circular elements in computer graphics applications
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United States of America Patent
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Jul 22, 2014
Grant Date -
Mar 22, 2012
app pub date -
Jun 24, 2011
filing date -
Jun 25, 2010
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Abstract
A solution for representing a free-form shape in a data-processing system is proposed. An illustrative method comprises associating sample points defining the free-form shape with a set of circular elements, and storing an indication of the circular elements. Associating includes determining a set of pivot points among the sample points in correspondence of maximum and minimum curvatures of the free-form shape, partitioning the sample points into a set of first groups of sample points each spanning around a corresponding pivot point and a set of second groups of sample points each extending according to a predefined minimum extent between a corresponding pair of adjacent first groups of sample points. Each first group is associated with a first circular element fitting the first group of sample points, and each second group is associated with at least one second circular element providing a predefined continuity with each adjacent first circular element.
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