System and method for recognizing geometric shapes
First Claim
1. A non-transitory computer readable medium having a computer readable program code embodied therein, said computer readable program code adapted to be executed to implement a method for providing geometric shape recognition for at least one input stroke, said method comprising:
- recognizing at least one shape primitive that corresponds to at least one input stroke;
defining the at least one shape primitive as a plurality of vector components;
applying at least one vector component level constraint to the vector components, the at least one constraint geometrically linking at least two of the vector components; and
providing an output based on the application of the at least one constraint to the vector components.
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Abstract
A system and method that is able to recognize a user'"'"'s natural drawing of geometric shapes. The system and method is able to process single-stroke and multi-stroke geometric shapes. It can also apply implicit and user defined constraints to the geometric shapes. The system and method applies these constraints at the vector component level rather than the primitive level. It does this by breaking down both the geometric shapes and constraints on a vector component level. This allows the system and method to handle a larger number of geometric shapes and constraints. After applying the constraints to the geometric shapes at the vector component level, the system and method outputs smooth geometric shapes that incorporated both the implicit and user defined constraints.
29 Citations
27 Claims
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1. A non-transitory computer readable medium having a computer readable program code embodied therein, said computer readable program code adapted to be executed to implement a method for providing geometric shape recognition for at least one input stroke, said method comprising:
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recognizing at least one shape primitive that corresponds to at least one input stroke; defining the at least one shape primitive as a plurality of vector components; applying at least one vector component level constraint to the vector components, the at least one constraint geometrically linking at least two of the vector components; and providing an output based on the application of the at least one constraint to the vector components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for providing geometric shape recognition for at least one input stroke on a computing device, the computing device comprising a processor and at least one non-transitory computer readable medium under control of the processor, said method comprising:
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recognizing, by the at least one non-transitory computer readable medium, at least one shape primitive that corresponds to at least one input stroke; defining, by the at least one non-transitory computer readable medium, the at least one shape primitive as a plurality of vector components; applying, by the at least one non-transitory computer readable medium, at least one vector component level constraint to the vector components, the at least one constraint geometrically linking at least two of the vector components; and providing, by the at least one non-transitory computer readable medium, an output based on the application of the at least one constraint to the vector components. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A system for providing geometric shape recognition for at least one input stroke on a computing device, the computing device comprising a processor and at least one non-transitory computer readable medium under control of the processor, the system comprising:
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causing recognition, by the at least one non-transitory computer readable medium, of at least one shape primitive that corresponds to at least one input stroke; causing definition, by the at least one non-transitory computer readable medium, of the at least one shape primitive as a plurality of vector components; causing application, by the at least one non-transitory computer readable medium, of at least one vector component level constraint to the vector components, the at least one constraint geometrically linking at least two of the vector components; and causing output, by the at least one non-transitory computer readable medium, based on the application of the at least one constraint to the vector components. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification