DEVICE AND METHOD FOR INSPECTING TYRE SHAPE

Title:

DEVICE AND METHOD FOR INSPECTING TYRE SHAPE

Document Type and Number:

WIPO Patent Application WO/2011/070750

Kind Code:

A1

Abstract:

Boundary lines, which are the contours of indentation marks, are detected in a sample original image, which is a two-dimensional image of the sidewall surface of a sample tyre, and a mask image displaying the location of the boundary lines is generated. Then a height offset image, which displays the height of the indentation marks, is generated by using a plurality of discrete height thresholds to classify the height of regions in the sample original image which remain when the regions corresponding to the locations of boundary lines shown on the mask image are excluded. An image from which the indentations have been extracted is then generated by removing the indentation marks from an inspection image, which is a two-dimensional image of the sidewall of a tyre to be inspected, by deducting the height offset image from the inspection image. Shape irregularities in the side wall of the tyre to be tested are detected on the basis of the indentation extracted image.

More Like This:

JP3043910	APPARATUS FOR MEASURING BENT DEGREE OF UTILITY POLE
JP3138056	[Title of Invention] Two-dimensional measuring machine
JPS59102106	INSPECTING SYSTEM

Inventors:

TAKAHASHI EIJI
SAKODA NAOKAZU
TSUJI TOSHIYUKI
TAKEDA HAJIME
MURAKAMI MASAO

Application Number:

PCT/JP2010/007038

Publication Date:

June 16, 2011

Filing Date:

December 02, 2010

Export Citation:

Click for automatic bibliography generation Help

Assignee:

KOBE STEEL LTD (JP)
TAKAHASHI EIJI
SAKODA NAOKAZU
TSUJI TOSHIYUKI
TAKEDA HAJIME
MURAKAMI MASAO

International Classes:

G01B11/24; B60C19/00; G01N21/88

Foreign References:

JP2005331274A	2005-12-02
JP2008111671A	2008-05-15
JPH05187843A	1993-07-27
JPH10160452A	1998-06-19
JP2008064486A	2008-03-21
JP2006284471A	2006-10-19
JP2008221896A	2008-09-25
JP2005331274A	2005-12-02

Other References: