Title:
SHAPE MEASUREMENT METHOD AND SHAPE MEASUREMENT APPARATUS FOR TIRES
Document Type and Number:
WIPO Patent Application WO/2011/115257
Kind Code:
A1
Abstract:
Disclosed is a shape measurement method and shape measurement apparatus for tires that can measure the thickness of the circumference of the tire accurately and in a short period of time. The shape measurement method for tires involves: an outer and inner surface shape measurement step in which the outer surface shape data and the inner surface shape data for a tire is detected from image data of the outer surface and inner surface of the tire; an outer and inner surface primary component extraction step in which the contours on the circumference following the circumferential direction of the tire within the outer and inner surface shape data are subjected to Fourier transformation and the respective primary waveform components thereof are extracted; a circumferential position adjustment step in which the tire circumference positions of both waveform components are matched and the tire circumference positions thereof are adjusted; a cross section position adjustment step in which the radial tire cross section positions of the outer surface shape data and the inner surface shape data are adjusted from the placement angle and position information of a first and second camera; and a shape data synthesis step in which the outer surface shape data and inner surface shape data are synthesized on the basis of the adjusted tire circumference positions and radial tire cross section positions.
Inventors:
MIZUTANI AKINOBU (JP)
KATO DAISUKE (JP)
TOGII AKIRA (JP)
OKUDE KENICHI (JP)
KATO DAISUKE (JP)
TOGII AKIRA (JP)
OKUDE KENICHI (JP)
Application Number:
PCT/JP2011/056575
Publication Date:
September 22, 2011
Filing Date:
March 18, 2011
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
MIZUTANI AKINOBU (JP)
KATO DAISUKE (JP)
TOGII AKIRA (JP)
OKUDE KENICHI (JP)
MIZUTANI AKINOBU (JP)
KATO DAISUKE (JP)
TOGII AKIRA (JP)
OKUDE KENICHI (JP)
International Classes:
G01B11/06; B60C19/00; G01B11/24
Foreign References:
JP2000343915A | 2000-12-12 | |||
JP2008026165A | 2008-02-07 | |||
JP2008196881A | 2008-08-28 | |||
JPH02176408A | 1990-07-09 | |||
JP2008196975A | 2008-08-28 | |||
JP2007132807A | 2007-05-31 | |||
JPH081377A | 1996-01-09 | |||
JP2003050123A | 2003-02-21 | |||
JP2009139297A | 2009-06-25 | |||
JP2008026165A | 2008-02-07 |
Other References:
See also references of EP 2549225A4
Attorney, Agent or Firm:
HONDA ICHIRO (JP)
Ichiro Honda (JP)
Ichiro Honda (JP)
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Claims:
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