×

Infrared camera and infrared lamp brightness adjustment method therefor

  • US 10,187,582 B2
  • Filed: 01/06/2015
  • Issued: 01/22/2019
  • Est. Priority Date: 01/10/2014
  • Status: Active Grant
First Claim
Patent Images

1. An infrared lamp brightness adjusting method for an infrared camera, comprising:

  • after an infrared lamp of the infrared camera is opened, performing processing as follows in each preset time period;

    determining whether there is at least one sub-region with abnormal brightness in N sub-regions in a surveillance image, the N sub-regions having a same size with each other, N being a positive integer more than 1;

    wherein the infrared lamp of the infrared camera includes a near lamp, a middle lamp, and a far lamp;

    the far lamp, the middle lamp and the near lamp have different illumination angles;

    if yes, obtaining a preset parameter of the surveillance image, calculating a viewing angle α

    of the surveillance image according to the preset parameter, determining an infrared lamp adjustment mode through comparing a preset parameter of a respective one of the at least one sub-region with the abnormal brightness and the viewing angle of the surveillance image, and adjusting a brightness of the far lamp, the middle lamp and the near lamp according to the determined infrared lamp adjustment mode until the at least one sub-region with the abnormal brightness returns to normal.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×