Analysis of the digital image of the internal surface of a tyre and processing of false measurement points

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United States of America Patent

PATENT NO 9117294
APP PUB NO 20140270390A1
SERIAL NO

14112460

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Abstract

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A method for processing an image of a surface of a tire under inspection is described. A three-dimensional digital image of the surface is captured and, for each point of the captured image, a grey-level value corresponding to an elevation is assigned to the point. Utilizing a first morphological operator that uses a rectangular key element, a closure-type first transformation of the image of the surface is carried out. Utilizing a second morphological operator that uses a rectangular key element, an opening-type second transformation of the surface is carried out. For each point of the image, a grey-level value equal to a minimum value between a grey-level value at that point obtained in a preceding step and a grey-level value at that point is assigned, so as to eliminate false measurement points.

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Patent Owner(s)

  • COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN;MICHELIN RECHERCHE ET TECHNIQUE S.A.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Moreau, Claire Clermont-Ferrand Cedex, FR 4 37
Noyel, Guillaume Clermont-Ferrand Cedex, FR 8 46
Shen, Yusi Clermont-Ferrand Cedex, FR 3 14
Zanella, Jean-Paul Clermont-Ferrand Cedex, FR 10 87

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