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Embedded interaction code enabled surface type identification

  • US 7,817,816 B2
  • Filed: 08/17/2005
  • Issued: 10/19/2010
  • Est. Priority Date: 08/17/2005
  • Status: Expired due to Fees
First Claim
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1. A system having a memory and a processor that processes at least one image captured from a printed document and that processes at least one image captured from a display surface other than a printed document, the system comprising:

  • a surface-type-identification module that accepts as input the at least one image captured from a printed document and the at least one image captured from a display surface other than a printed document and that identifies, for a particular image, a type of surface from which the image was captured, wherein the type of surface is selected from a group consisting of;

    a printed document and a display surface other than a printed document, wherein the surface-type-identification module comprises a feature-based surface-type-identification module that identifies, based on a feature vector, the type of surface from which the particular image was captured and wherein the feature-based surface-type-identification module identifies the type of surface from which the particular image was captured using a linear classifier to distinguish between a feature vector of an image that was captured from a printed document and a feature vector of an image that was captured from a display surface other than a printed document;

    a display-surface-preprocessing module comprising computer-executable instructions stored in the memory that, when executed by the processor, preprocesses the particular image according to a first preprocessing algorithm when the particular image is identified as having been captured from a display surface other than a printed document;

    a printed-document-preprocessing module comprising computer-executable instructions stored in the memory that, when executed by the processor, preprocesses the particular image according to a second preprocessing algorithm when the particular image is identified as having been captured from a printed document; and

    an embedded-interaction-code-processing module that outputs location information for at least one of the at least one image captured from a printed document and the at least one image captured from a display surface other than a printed document.

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