Invention Grant
- Patent Title: Analysis of the digital image of the external surface of a tyre and processing of false measurement points
- Patent Title (中): 分析轮胎外表面的数字图像和处理假测量点
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Application No.: US14112448Application Date: 2012-03-21
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Publication No.: US09230318B2Publication Date: 2016-01-05
- Inventor: Jean-Paul Zanella , Claire Moreau , Guillaume Noyel , Yusi Shen
- Applicant: Jean-Paul Zanella , Claire Moreau , Guillaume Noyel , Yusi Shen
- Applicant Address: FR Clermont-Ferrand CH Granges-Paccot
- Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN,MICHELIN RECHERCHE ET TECHNIQUE S.A.
- Current Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN,MICHELIN RECHERCHE ET TECHNIQUE S.A.
- Current Assignee Address: FR Clermont-Ferrand CH Granges-Paccot
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: FR1153345 20110418
- International Application: PCT/EP2012/055016 WO 20120321
- International Announcement: WO2012/143198 WO 20121026
- Main IPC: G06K9/00
- IPC: G06K9/00 ; G06T7/00 ; G01M17/02 ; G06T3/00 ; G06T5/00 ; G06T5/30 ; G01N21/952
Abstract:
A method for processing an image of a surface of a tire to be inspected is described. A three-dimensional digital image is captured of the surface, and each pixel of a plane of the image is assigned an item of information relating to an elevation of the pixel with respect to the surface. By utilizing of a morphological operator that uses a structuring element, a first transformation of the image of the surface is performed with aid of an opening and then of a closing, so as to tailor a grey level of pixels situated abnormally above or below the surface.
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