Method for extracting and distinguishing dot-matrix patterns after filtering through optical filter

Method for extracting and distinguishing dot-matrix patterns after filtering through optical filter

CN
  • CN 103,942,521 A
  • Filed: 04/11/2014
  • Published: 07/23/2014
  • Est. Priority Date: 04/11/2014
  • Status: Active Application
First Claim
Patent Images

1. by optical filter, the dot pattern after filtering is extracted, distinguishes a method for distinguishing, comprise the following steps:

  • S10, infrared spectrum are radiated on dot pattern, to generate the image spectrum with dot pattern;

    S20, remove other spectrum by infrared fileter, to generate infrared image reflectance spectrum;

    S30, imaging device extract infrared image reflectance spectrum, to generate the dot pattern image without other veiling glares.

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