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Controlling use of parking spaces using cameras

  • US 8,817,100 B2
  • Filed: 03/26/2014
  • Issued: 08/26/2014
  • Est. Priority Date: 08/06/2012
  • Status: Active Grant
First Claim
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1. A method of tracking vehicles, the method comprising:

  • receiving two or more first images from a first camera having a first field of view, the two or more first images showing a first vehicle;

    determining, based on at least one of the two or more first images, a first static characteristic of the first vehicle;

    determining, based on at least two of the two or more first images, a first dynamic characteristic of the first vehicle;

    receiving two or more second images from a second camera having a second field of view, the two or more second images showing the first vehicle, the second camera being different from the first camera, and the second field of view being different from the first field of view;

    determining, based on at least one of the two or more second images, a second static characteristic of the first vehicle;

    determining, based on at least two of the two or more second images, a second dynamic characteristic of the first vehicle;

    comparing the second static characteristic of the first vehicle to the first static characteristic of the first vehicle;

    determining, in response to the comparison of the second static characteristic of the first vehicle and the first static characteristic of the first vehicle, that the second static characteristic of the first vehicle is approximately equal to the first static characteristic of the first vehicle;

    comparing the second dynamic characteristic of the first vehicle to the first dynamic characteristic of the first vehicle;

    determining, in response to the comparison of the second dynamic characteristic of the first vehicle and the first dynamic characteristic of the first vehicle, that the second dynamic characteristic of the first vehicle is approximately equal to the first dynamic characteristic of the first vehicle;

    determining, in response to the approximate equivalence between the second static characteristic of the first vehicle and the first static characteristic of the first vehicle and the approximate equivalence between the second dynamic characteristic of the first vehicle and the first dynamic characteristic of the first vehicle, that the first vehicle is present in the second field of view of the second camera; and

    indicating, in response to the determination that the first vehicle is present in the second field of view of the second camera, that the first vehicle is present in the second field of view of the second camera, wherein;

    the first static characteristic of the first vehicle and the second static characteristic of the first vehicle are characteristics of the first vehicle that do not change over time,the first dynamic characteristic of the first vehicle and the second dynamic characteristic of the first vehicle are characteristics of the first vehicle that change over time, andthe steps of receiving, determining, comparing and indicating are performed by one or more processors.

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