System for estimating digital ink orientation
First Claim
1. A system for estimating the orientation of digital ink, the system comprising an optically imaging pen and a processor configured to:
- measure the azimuth of the pen at a sampling rate during writing by the 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; and
estimate the orientation of the digital ink using the measured azimuth of the pen at the sampled points.
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Abstract
A system for estimating the orientation of digital ink is provided which has an optically imaging pen and a processor. The processor measures the azimuth of the pen at a sampling rate during writing by the pen on a surface printed with tags and estimates the orientation of the 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 ink is generated by associating the digital description with the data encoded by the tags optically imaged by the pen during the writing.
16 Citations
5 Claims
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1. A system for estimating the orientation of digital ink, the system comprising an optically imaging pen and a processor configured to:
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measure the azimuth of the pen at a sampling rate during writing by the 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; and estimate 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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Primary Examiner(s)Mehta; Bhavesh M
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Assistant Examiner(s)Akhavannik; Hadi
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Application NumberUS12/618,747Publication NumberTime in Patent Office464 DaysField of Search382/186US Class Current382/186CPC Class CodesG06V 30/1423 the instrument generating s...G06V 30/333 Preprocessing; Feature extr...
