Method/system for estimating the orientation of a segment of digital ink
First Claim
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1. A method of estimating the orientation of a segment of digital ink, the method including the steps of:
- (1) measuring the azimuth of the pen at a sampling rate during writing of said segment by an optically imaging pen on a surface printed with tags, each tag encoding data on an identity of the surface associated with a digital description of the surface and on the respective location of that tag on the surface, the digital ink being generated by associating the digital description with the data encoded by the tags optically imaged by the pen during said writing;
(2) determining a mean azimuth for all of the sampled points; and
(3) subtracting the determined mean azimuth from each measured azimuth at each sampled point of said segment.
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Abstract
The invention provides a method/system for estimating the orientation of a segment of digital ink using pen orientation information. In one form, the invention is a method of estimating the orientation of a segment of digital ink, the method including the steps of: measuring the azimuth of the pen at a sampling rate during writer generation of the segment of digital ink; and estimating the orientation of the segment of digital ink using the measured azimuth of the pen at sampled points.
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13 Claims
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1. A method of estimating the orientation of a segment of digital ink, the method including the steps of:
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(1) measuring the azimuth of the pen at a sampling rate during writing of said segment by an optically imaging pen on a surface printed with tags, each tag encoding data on an identity of the surface associated with a digital description of the surface and on the respective location of that tag on the surface, the digital ink being generated by associating the digital description with the data encoded by the tags optically imaged by the pen during said writing; (2) determining a mean azimuth for all of the sampled points; and (3) subtracting the determined mean azimuth from each measured azimuth at each sampled point of said segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification