System and method for detecting a hand-drawn object in ink input
First Claim
1. A computer system for detecting a hand-drawn shape, comprising:
- a chart detector for receiving ink input;
a container detector operably coupled to the chart detector for detecting a closed container within ink input; and
a connector detector operably coupled to the chart detector for detecting a connector within ink input.
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Abstract
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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Citations
40 Claims
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1. A computer system for detecting a hand-drawn shape, comprising:
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a chart detector for receiving ink input;
a container detector operably coupled to the chart detector for detecting a closed container within ink input; and
a connector detector operably coupled to the chart detector for detecting a connector within ink input. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for detecting a hand-drawn shape, comprising:
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receiving ink input;
performing container detection for each container within the ink input; and
performing connector detection for each connector within the ink input. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A computer system for detecting a hand-drawn shape, comprising:
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means for receiving ink input;
means for detecting a closed container within ink input; and
means for detecting a connector within ink input.
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Specification