System and method for curve recognition in a hand-drawn chart in ink input
First Claim
1. A computer system for recognizing a hand-drawn chart in ink input, comprising:
- a curve recognizer for recognizing a hand-drawn chart from drawing strokes in ink input;
a line recognizer operably coupled to the curve recognizer for recognizing a hand-drawn chart having a line segment;
a normal distribution recognizer operably coupled to the curve recognizer for recognizing a hand-drawn chart having a normal distribution curve;
an exponential curve recognizer operably coupled to the curve recognizer for recognizing a hand-drawn chart having an exponential curve; and
a logarithmic curve recognizer operably coupled to the curve recognizer for recognizing a hand-drawn chart having a logarithmic curve.
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Accused Products
Abstract
A system and method for recognition of hand-drawn charts in ink input is provided. A chart recognizer may be provided that may recognize a hand-drawn diagram or chart in ink input. The chart recognizer may include a connectivity-based recognizer for recognizing a hand-drawn chart having connected areas such as a pie chart, a connected container recognizer for recognizing a hand-drawn chart having connected containers such as a cycle diagram, and a curve recognizer for recognizing a hand-drawn chart having a curve. The connected container recognizer may also recognize a hand-drawn chart having intersecting containers such as a Venn diagram or a hand-drawn chart having a container that may include another container such as a target diagram.
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Citations
20 Claims
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1. A computer system for recognizing a hand-drawn chart in ink input, comprising:
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a curve recognizer for recognizing a hand-drawn chart from drawing strokes in ink input;
a line recognizer operably coupled to the curve recognizer for recognizing a hand-drawn chart having a line segment;
a normal distribution recognizer operably coupled to the curve recognizer for recognizing a hand-drawn chart having a normal distribution curve;
an exponential curve recognizer operably coupled to the curve recognizer for recognizing a hand-drawn chart having an exponential curve; and
a logarithmic curve recognizer operably coupled to the curve recognizer for recognizing a hand-drawn chart having a logarithmic curve. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method in a computer system for recognizing a hand-drawn chart in ink input, comprising:
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receiving ink input;
performing chart detection for the drawing strokes in the ink input;
performing shape recognition for drawing objects detected within the ink input; and
performing curve recognition for the drawing strokes within the ink input for recognition of a hand-drawn chart having a curve. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A computer system for detecting a hand-drawn shape, comprising:
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means for receiving ink input;
means for performing chart detection for the drawing strokes in the ink input;
means for performing shape recognition for drawing objects detected within the ink input; and
means for performing curve recognition for the drawing strokes within the ink input for recognition of a hand-drawn chart having a curve.
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Specification