Title:
OPTICAL VELOCITY MEASUREMENT DEVICE AND MOVING BODY
Document Type and Number:
WIPO Patent Application WO/2016/016959
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing, in a moving body having no wheels or a moving body having wheels that slip, an optical velocity measurement device, and the like, capable of accurately estimating the device velocity while suppressing the effect of the rotational motion of the moving body. An optical velocity measurement device for addressing this problem is characterized by having a photography means that is provided on a moving body and is for photographing a travel surface such that the amount of movement of each pixel when a photographed flat surface moves varies depending on the position of the pixel within an image, and in that the change in the amount of movement of each pixel along a prescribed axis is determined as a pixel movement amount slope on the basis of a plurality of images sequentially photographed by the photography unit, and the speed of the moving body is determined on the basis of the pixel movement amount slope.
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Inventors:
UEDA TAISHI (JP)
NAKAMURA RYOSUKE (JP)
AMINO AZUSA (JP)
NAKAMURA RYOSUKE (JP)
AMINO AZUSA (JP)
Application Number:
PCT/JP2014/069993
Publication Date:
February 04, 2016
Filing Date:
July 30, 2014
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
G01P3/36
Foreign References:
| JP2013003110A | 2013-01-07 | |||
| JP2011209825A | 2011-10-20 | |||
| JP2010019640A | 2010-01-28 | |||
| JP2007078358A | 2007-03-29 | |||
| EP2725362A1 | 2014-04-30 | |||
| US4385830A | 1983-05-31 |
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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