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ENDOSCOPE POSITION SPECIFYING DEVICE, METHOD, AND PROGRAM

  • US 20180263712A1
  • Filed: 01/11/2018
  • Published: 09/20/2018
  • Est. Priority Date: 03/16/2017
  • Status: Active Application
First Claim
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1. An endoscope position specifying device, comprising:

  • endoscope image acquisition unit for sequentially acquiring endoscope images that are generated by an endoscope inserted into a tubular structure having a plurality of branch structures and that show an inner wall of the tubular structure;

    hole portion detection unit for detecting a hole portion of the tubular structure from at least one of a first endoscope image or a second endoscope image, which is acquired temporally before the first endoscope image, among the sequentially acquired endoscope images;

    first parameter calculation unit for calculating a first parameter indicating an amount of parallel movement of the first endoscope image with respect to the second endoscope image in order to match hole portions of the first and second endoscope images with each other;

    second parameter calculation unit for performing alignment between the first and second endoscope images based on the first parameter and calculating a second parameter including an amount of enlargement and reduction of the first endoscope image with respect to the second endoscope image in order to match the hole portions of the first and second endoscope images after the alignment with each other; and

    movement amount calculation unit for calculating an amount of movement of the endoscope from an acquisition time of the second endoscope image to an acquisition time of the first endoscope image based on the first and second parameters.

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