Title:
POSITION INFORMATION IDENTIFICATION METHOD, POSITION INFORMATION IDENTIFICATION DEVICE, AND POSITION INFORMATION IDENTIFICATION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2017/099047
Kind Code:
A1
Abstract:
[Problem] To provide a position information identification method used for accurately identifying the position and speed of a photographed subject. [Solution] A position information identification method comprises: a step for acquiring subject images 3 which are photographed by a surveillance camera 2 having predetermined distortion characteristics pertaining to distortion in a photographed image; a step for capturing a first scale plate image 42 which is equivalent to an image obtained when a first scale plate 4 having first scale marks 41 is photographed at a first distance X from the surveillance camera 2; a step for superimposing the first scale plate image 42 and one of the subject images 3 on each other; a step for measuring, by using the first scale marks 41 on the first scale plate image 42, an image size A of a first reference object 5 of a first predetermined size B which is shown in the subject images 3; and a step for calculating a first subject distance Y from the surveillance camera 2 to the first reference object 5 on the basis of the image size A of the first reference object 5, the first predetermined size B, and the first distance X.
Inventors:
KASAHARA HAJIME (JP)
Application Number:
PCT/JP2016/086145
Publication Date:
June 15, 2017
Filing Date:
December 06, 2016
Export Citation:
Assignee:
KASAHARA HAJIME (JP)
International Classes:
G01C3/06; G08G1/00; G08G1/054; H04N5/225
Foreign References:
| JP2013232241A | 2013-11-14 | |||
| JPH07182520A | 1995-07-21 | |||
| JP2005161988A | 2005-06-23 | |||
| JP2007148788A | 2007-06-14 | |||
| JPH0880840A | 1996-03-26 |
Attorney, Agent or Firm:
AIDA Takayuki (JP)
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