Title:
OBJECT DETECTION DEVICE, OBJECT DETECTION METHOD, AND COMPUTER READABLE RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2019/069469
Kind Code:
A1
Abstract:
An object detection device 100 is provided with: a fish-eye image acquisition unit 10 that acquires a time-series fish-eye image; a horizontal panorama image generation unit 20 that converts each frame to a horizontal panorama image in which the vertical direction of a real space is expressed in the perpendicular direction of the frame and the azimuth is expressed equiangularly in the horizontal direction of the frame; an edge pair extraction unit 30 that extracts a pair of edges in the perpendicular direction from the horizontal panorama image; a change rate extraction unit 40 that extracts the change rate of the inter-edge distance between the pair of edges; a lower-end region extraction unit 50 that extracts the region of the lower end of an object constituting the pair of edges; a distance change rate extraction unit 60 that calculates the distance from the object to a fish-eye camera on the basis of the position of the region of the lower end of the object on the horizontal panorama image, and extracts the change rate of the distance; and an object detection unit 70 that determines whether or not the object is present on the basis of the change rate of the inter-edge distance and the change rate of the distance.
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Inventors:
TAKAHASHI KATSUHIKO (JP)
Application Number:
PCT/JP2017/036548
Publication Date:
April 11, 2019
Filing Date:
October 06, 2017
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G06T7/00; G06T5/00; G06T7/254; G06V10/44
Foreign References:
| JP2013127739A | 2013-06-27 | |||
| JP2009093332A | 2009-04-30 |
Attorney, Agent or Firm:
BRIGHTAS IP ATTORNEYS (JP)
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