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Irregular input identification

  • US 10,025,429 B2
  • Filed: 08/08/2016
  • Issued: 07/17/2018
  • Est. Priority Date: 01/03/2007
  • Status: Active Grant
First Claim
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1. A method to process a proximity image, comprising:

  • receiving the proximity image;

    generating a dispersion image, wherein the dispersion image is based on a high-pass filtered version of the proximity image;

    determining an irregularity measure value for the dispersion image, the irregularity measure value indicating a degree of irregularity in a shape of the dispersion image; and

    controlling an operation of a touch-surface device when the irregularity measure value is above a specified threshold.

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