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Finger print detection apparatus and detection method thereof

  • US 10,192,097 B2
  • Filed: 04/20/2016
  • Issued: 01/29/2019
  • Est. Priority Date: 04/20/2016
  • Status: Active Grant
First Claim
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1. A finger print detection method, comprising:

  • accessing a part of an input image to generate a checked image;

    summing pixel numbers of pixels having gray levels larger than a smallest gray level out of all gray levels in all pixels and smaller than a largest gray level out of all gray levels in all pixels in the checked image to obtain a detected pixel number; and

    determining the checked image is a finger print when the detected pixel number is larger than a reference value.

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