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Image processing device, image processing method, and program

  • US 9,262,683 B2
  • Filed: 11/21/2013
  • Issued: 02/16/2016
  • Est. Priority Date: 12/04/2012
  • Status: Active Grant
First Claim
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1. An image processing device, comprising:

  • at least one processor configured to;

    receive captured image data of a portion of parking stalls that are compartmented at least by a first side line extending in a first direction and a second side line extending in the first direction;

    generate edge image data by performing an edge extraction process on the captured image data, wherein, for performing the edge extraction process, the at least one processor is configured to;

    generate edge intensity image data by performing an edge extraction process on the captured image data;

    generate edge image data by performing a quantization process on the edge intensity image data;

    regard edge pixel regions having connectivity in the edge image data as a same region;

    perform a process of giving the same label number to edge pixels of a same region;

    generate labeled image data;

    perform a process of giving a circumscribed rectangle to the edge pixel regions to which the same label number is given based on the labeled image data;

    generate a rectangular object;

    perform a process on the edge image data to remove an edge pixel region having a small number of connected pixels and an edge pixel region in a rectangular object having short vertical and horizontal widths as noise based on the labeled image data and the rectangular object; and

    generate output edge image data;

    obtain an integrated value of edge pixels of a portion of the first direction corresponding to the parking stalls in each position of a second direction that is orthogonal to the first direction based on the edge image data; and

    determine whether or not vehicles are parked in the parking stalls based on the obtained integrated value of each position of the second direction.

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