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Object detection and classification with fourier fans

  • US 10,395,125 B2
  • Filed: 10/06/2016
  • Issued: 08/27/2019
  • Est. Priority Date: 10/06/2016
  • Status: Active Grant
First Claim
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1. A system comprising:

  • an image sensor configured to capture an image from an environment surrounding the system, the image from the environment surrounding the system including one or more keypoints;

    extracting circuitry communicatively coupled to the image sensor and configured to extract at least one feature value from at least one of the one or more keypoints in the image from the environment surrounding the system;

    query point evaluation circuitry communicatively coupled to the image sensor and the extracting circuitry and configured to classify an object by sampling a periodic descriptor function for a query point in the image from the environment surrounding the system to produce a sample value, the periodic descriptor function depending on the distance between at least one of the one or more keypoints and the query point in complex space, the periodic descriptor function further depending on at least one feature value extracted from at least one of the one or more keypoints in the image from the environment surrounding the system, wherein;

    the periodic descriptor function is defined as;

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