Patent ID: 7511703
Filing Date: 2009-03-31
Classification: G06F

Abstract:
1. A method for interactively producing an image on an interactive display surface by manipulating a physical object relative to the interactive display surface, comprising the steps of: (a) detecting a set of points presented by at least a portion of the physical object disposed adjacent to the interactive display surface during a capture interval; (b) generating an image corresponding to the set of points detected; (c) displaying the image on the interactive display surface; (d) detecting sets of points presented by said at least the portion of the physical object disposed adjacent to the interactive display surface during a plurality of capture intervals that occur successively over a time; (e) generating images for the sets of points, where one image is generated for each set of points detected during a different capture interval; (f) accumulating the images corresponding to the sets of points presented by said at least the portion of the physical object during the plurality of capture intervals; (g) generating a composite image for each set of points by determining at least one connected component corresponding to said at least the portion of the physical object, the connected component having a plurality of adjoining points meeting a predefined condition and being bounded by outermost points not having adjoining points in all considered directions; and (h) presenting the composite image comprising the images accumulated for the sets of points.