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MOTION-SENSOR DEVICE HAVING MULTIPLE LIGHT SOURCES

  • US 20150292884A1
  • Filed: 03/19/2014
  • Published: 10/15/2015
  • Est. Priority Date: 04/01/2013
  • Status: Active Grant
First Claim
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1. A motion sensor device comprising:

  • an image sensor;

    a plurality of light sources including first, second and third light sources, the first light source being arranged at a first distance from the image sensor in a first direction, the second light source being arranged at a second distance from the image sensor in a second direction, the third light source being arranged at a third distance from the image sensor in a third direction; and

    a controller configured to control the image sensor and the plurality of light sources,wherein the controller is configured to;

    make the image sensor capture a first frame with light emitted from the first light source at a first time;

    make the image sensor capture a second frame with light emitted from the second light source at a second time;

    make the image sensor capture a third frame with light emitted from the third light source at a third time;

    obtain information about a distance to an object based on a plurality of images which have been gotten by capturing the first, second and third frames;

    obtain multiple pieces of information about an estimated distance to the object based on information representing a direction of the object derived from at least one of the plurality of images and a luminance of the object derived from each of the plurality of images; and

    determine the information about the distance based on the multiple pieces of estimated distance information, andthe second and third directions are different from each other, andthe first and second distances are different from each other.

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