Title:
FEATURE POINT DETECTION DEVICE, HOLLOW IMAGE DETECTION DEVICE, METHOD, AND PROGRAM
Document Type and Number:
Japanese Patent JP2018194520
Kind Code:
A
Abstract:
To enable a position candidate which is likely to be hollow to be presented.SOLUTION: A flat surface segmentation unit 42 generates, with respect to each of a plurality of types of normal directions, a plurality of images showing two-dimentional data segmented respectively in a plurality of flat surfaces having the normal directions, from three-dimentional data showing underground radar data. A SIFT feature point detection unit 44 detects a SIFT feature point from each of the plurality of segmented images. On the basis of the SIFT feature points detected by each of the plurality of images, a multidirectional crossing unit 46 narrows down SIFT feature points detected in an overlapping manner in each of the images with respect to each of the plurality of types of normal directions to a candidate of a feature point indicating a hollow position.SELECTED DRAWING: Figure 1
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Inventors:
MURAZAKI KAZUHIKO
ANDO SHINGO
TSUTSUGUCHI KEN
KINEBUCHI TETSUYA
ANDO SHINGO
TSUTSUGUCHI KEN
KINEBUCHI TETSUYA
Application Number:
JP2017100784A
Publication Date:
December 06, 2018
Filing Date:
May 22, 2017
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
G01S7/41; G01S13/88; G06T7/00
Attorney, Agent or Firm:
Patent Service Corporation Taiyo International Patent Office