METHOD OF ESTIMATING DIGITAL INK ORIENTATION
First Claim
1. A method of estimating the orientation of digital ink, the method comprising the steps of:
- measuring, at a sampling rate during writing by an optically imaging pen on a surface printed with tags, the azimuth of the pen, 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 description being stored by a computer system networked with the pen and 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; and
estimating, at the computer system, the orientation of the digital ink using the measured azimuth of the pen at the sampled points.
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Abstract
A method of estimating the orientation of digital ink is provided. The includes measuring, at a sampling rate during writing by an optically imaging pen on a surface printed with tags, the azimuth of the pen, and estimating, at the computer system, the orientation of the segment of digital ink using the measured azimuth of the pen at the sampled points. Each tag encodes 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 description is stored by a computer system networked with the pen and the digital ink is generated by associating the digital description with the data encoded by the tags optically imaged by the pen during the writing.
17 Citations
5 Claims
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1. A method of estimating the orientation of digital ink, the method comprising the steps of:
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measuring, at a sampling rate during writing by an optically imaging pen on a surface printed with tags, the azimuth of the pen, 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 description being stored by a computer system networked with the pen and 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; and estimating, at the computer system, the orientation of the digital ink using the measured azimuth of the pen at the sampled points. - View Dependent Claims (2, 3, 4, 5)
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Specification
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- Resources
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Current AssigneeSilverbrook Research Pty Limited
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Original AssigneeSilverbrook Research Pty Limited
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InventorsNapper, Jonathon Leigh, Lapstun, Paul
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current382/188
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CPC Class CodesG06V 30/1423 the instrument generating s...G06V 30/333 Preprocessing; Feature extr...
