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Apparatus and method to reduce an amount of coordinate data representing an object taken by an imaging device in a three dimensional space

  • US 10,341,683 B1
  • Filed: 11/07/2018
  • Issued: 07/02/2019
  • Est. Priority Date: 12/26/2017
  • Status: Active Grant
First Claim
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1. An information processing apparatus comprising:

  • a memory; and

    a processor coupled to the memory and configured to;

    obtain a second straight line by mapping a first straight line that passes a projection center of a target image taken by a first imaging device in a three dimensional space and a point representing an object in a projection plane of the first imaging device, onto each of a plurality of reference images respectively taken by a plurality of second imaging devices, and generate a reference line-segment representing an existing range of the object on the second straight line for each of the plurality of reference images;

    transform, for each of the plurality of reference line-segments respectively generated on the plurality of reference images, a coordinate value of a first endpoint of the reference line-segment into a difference between a coordinate value of the first end point and a coordinate value of a second endpoint of the reference line-segment;

    store the coordinate value of the second endpoint and the difference in the memory;

    restore the coordinate value of the first endpoint from the coordinate value of the second endpoint and the difference stored in the memory; and

    map the coordinate value of the second endpoint and the restored coordinate value of the first endpoint, onto a depth-direction line that is perpendicular to the projection plane of the first imaging device, and determine overlap of a plurality of line-segments on the depth-direction line whose endpoints are mapped from each of the plurality of reference line-segments on the plurality of reference images.

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