Patent ID: 8811687

Claim:
A computer program product for cleaning digital information, the computer program product comprising: non-transitory computer readable storage medium having computer readable program code embodied therewith, the computer readable program code comprising: computer readable program code configured to receive a first set of unconstrained real-time digital information generated by a device sensing pressure of a medium upon the device, where the pressure sensed by the device includes pressure produced on the medium by a physical object; computer readable program code configured to receive a second set of digital information, wherein the second set of digital information is generated by a scanning device scanning the medium after the first set of unconstrained real-time digital information is generated computer readable program code configured to construct a constraining digital mask based on the first set of unconstrained real-time digital information; and computer readable program code configured to select at least a portion of the second set of digital information by applying the constraining digital mask to the second set of digital information.