Camera-equipped writing tablet apparatus for digitizing form entries
First Claim
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1. A data capture apparatus, comprising:
- a form holder;
an image capture device connected to said form holder;
a pen associated with said form holder, anda processor that identifies said form using said image of said form to match affine-invariant form features with affine-invariant features of model forms in a form database, correlates said marks made on said form with respective data fields on said form, and stores said marks made on said form in said respective data fields;
wherein said image capture device is positioned to capture an image of a form on said form holder,wherein said form holder comprises a pen capture device adapted to electronically capture marks made on said form using said pen, andwherein said affine-invariant form features comprise at least one of point features, line features, and intersection of lines features.
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Abstract
The embodiments of the invention provide an apparatus, method, etc. for a camera-equipped writing tablet for digitizing form entries. More specifically, a data capture apparatus comprises a form holder and an image capture device connected to the form holder. The image capture device is positioned to capture an image of a form on the form holder, wherein the form could be a paper form. A clip is connected to the form holder, wherein the image capture device is mounted to the clip. The apparatus further comprises an electronic pen connected to the form holder, wherein the form holder comprises an electronic pen capture device to electronically capture marks made on the form using the electronic pen. The electronic pen is a combination ink and electronic pen that is temporarily connected to the form holder.
36 Citations
20 Claims
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1. A data capture apparatus, comprising:
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a form holder; an image capture device connected to said form holder; a pen associated with said form holder, and a processor that identifies said form using said image of said form to match affine-invariant form features with affine-invariant features of model forms in a form database, correlates said marks made on said form with respective data fields on said form, and stores said marks made on said form in said respective data fields; wherein said image capture device is positioned to capture an image of a form on said form holder, wherein said form holder comprises a pen capture device adapted to electronically capture marks made on said form using said pen, and wherein said affine-invariant form features comprise at least one of point features, line features, and intersection of lines features. - View Dependent Claims (2, 3, 4, 5)
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6. A data capture apparatus, comprising:
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a form holder; an image capture device connected to said form holder; a pen connected to said form holder, wherein said image capture device is positioned to capture an image of a form on said form holder, and wherein said form holder comprises a pen capture device adapted to electronically capture marks made on said form using said pen; and a processor adapted to query a form database using said image of said form to identify said form based on matching affine-invariant features of said form with affine-invariant features of model forms in said form database, correlate said marks made on said form with respective data fields on said form, and store said marks made on said form in said respective data fields, wherein said affine-invariant features comprise at least one of point features, line features, and intersection of lines features. - View Dependent Claims (7, 8, 9, 10)
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11. A data capture apparatus, comprising:
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a form holder; an image capture device connected to said form holder; a pen connected to said form holder, wherein said image capture device is positioned to capture an image of a form on said form holder, and wherein said form holder comprises a pen capture device adapted to electronically capture marks made on said form using said pen; and a processor adapted to query a form database using said image of said form to identify said form, correlate said marks made on said form with respective data fields on said form, store said marks made on said form in said respective data fields, and match affine-invariant features of said form with affine-invariant features of model forms in said form database, wherein said affine-invariant features comprise at least one of point features, line features, and intersection of lines features. - View Dependent Claims (12, 13, 14)
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15. A computer-implemented method, comprising:
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obtaining an image of a printed form using at least one camera attached to a form holder; identifying said printed form using a computer, comprising querying a form database using said image of said printed form by matching affine-invariant features of said form with affine-invariant features of model forms in said form database; obtaining handwritten input on said printed form using said form holder, wherein said form holder comprises a pen capture graphic user interface; correlating said handwritten input with respective data fields on said printed form using said computer; and storing said handwritten input in said respective data fields. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification
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Current AssigneeInternational Business Machines Corporation
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Original AssigneeInternational Business Machines Corporation
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InventorsZimmerman, Thomas G., Syeda-Mahmood, Tanveer F.
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Primary Examiner(s)Lefkowitz; Sumati
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Assistant Examiner(s)Hicks; Charles
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Application NumberUS11/424,932Publication NumberTime in Patent Office1,275 DaysField of Search345/179, 345/169US Class Current345/179CPC Class CodesG06V 10/147 Details of sensors, e.g. se...G06V 30/10 Character recognitionG06V 30/1444 Selective acquisition, loca...
