System and method for detecting a hand-drawn object in ink...

Details System and method for detecting a hand-drawn object in ink... System and method for detecting a hand-drawn object in ink...

G - Physics

06

F

G06F 21/00 (2006.01) G06K 9/00 (2006.01)

Patent

CA 2481828

A system and method for detection of hand-drawn objects in ink input is provided. A detector may detect a drawing such as a diagram or chart from ink input by detecting closed containers and/or unclosed connectors in the drawing. An efficient grid-based approach may be used for fitting the ink strokes into an image grid with an appropriate size. A flood-fill algorithm may be used to detect the containers and connectors. A time order search may also be performed after a spatial search to handle overlapping of drawing strokes. Finally, content detection may be performed for each detected container. Once any containers and their associated content have been detected in the image grid, connector detection may be performed. By using the present invention, a user may draw diagrams and flow charts freely and without restrictions on the hand-drawn input.

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