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1. 发明授权

US09189841B2 Method of checking the appearance of the surface of a tyre 有权
标题翻译：检查轮胎表面外观的方法
公开(公告)号：US09189841B2
公开(公告)日：2015-11-17
申请号：US14348156
申请日：2012-09-27
申请人： Guillaume Noyel , Dominique Jeulin , Estelle Parra-Denis , Michel Bilodeau
发明人： Guillaume Noyel , Dominique Jeulin , Estelle Parra-Denis , Michel Bilodeau
IPC分类号： G06T7/00
CPC分类号： G06T7/0004 , G06K9/6234 , G06K9/6247 , G06K9/6269 , G06K2209/19 , G06T7/001 , G06T2207/20021 , G06T7/004 , G06T7/0048
摘要： A tire appearance detection method includes: capturing an original grey-level image of an inner surface of a tire, and transforming the original image into an orthonormal space with an x-axis (OX) representing a circumferential direction and with a y-axis (OY) representing a radial direction; applying a series of filters to the original image, to obtain a multivariate image; splitting the multivariate image according to a predefined tiling in axial and circumferential directions, to obtain multivariate sub-images of the inner surface of the tire; transforming each of the multivariate sub-images into one-dimensional vectors using selected descriptors, to obtain a simplified multivariate image of the inner surface of the tire; transforming the simplified multivariate image into a common reduced factorial space; and locating sub-images of the inner surface of the tire containing an anomaly using a classifier suitable for identifying an area of the common reduced factorial space containing an anomaly.
摘要翻译：轮胎外观检测方法包括：捕获轮胎的内表面的原始灰度图像，并且将原始图像转换成具有代表圆周方向的x轴（OX）和具有y轴的正交空间（OX） OY）表示径向; 对原始图像应用一系列滤波器，获得多变量图像; 根据轴向和圆周方向上的预定平铺分割多变量图像，以获得轮胎内表面的多变量子图像; 使用所选择的描述符将每个多变量子图像变换为一维向量，以获得轮胎内表面的简化多变量图像; 将简化的多变量图像转换为共同的缩减因子空间; 以及使用适合于识别包含异常的公共缩减阶乘空间的区域的分类器来定位包含异常的轮胎的内表面的子图像。

2. 发明授权

US09196034B2 Method of fast analysis of the relief elements featuring on the internal surface of a tyre 有权
标题翻译：快速分析轮胎内表面上的浮雕元件的方法
公开(公告)号：US09196034B2
公开(公告)日：2015-11-24
申请号：US14348209
申请日：2012-09-27
申请人： Guillaume Noyel , Dominique Jeulin , Estelle Parra-Denis , Michel Bilodeau
发明人： Guillaume Noyel , Dominique Jeulin , Estelle Parra-Denis , Michel Bilodeau
IPC分类号： G06T7/00
CPC分类号： G06T7/001 , G06T7/0004 , G06T7/337 , G06T2207/10028 , G06T2207/30108
摘要： In a method of fast analysis of relief elements featuring on an inner surface of a tire, a three-dimensional image of the surface is captured, and each pixel of the image is assigned a greyscale value proportional to a topographical elevation of a point corresponding to the pixel, so as to obtain a starting image. The image is transformed into an orthogonal reference frame (OXY) in which an abscissa axis (OX) represents circumferential values and an ordinate axis (OY) represents radial values. Each point of the surface, i.e., each pixel, is assigned an altitude gradient value (f(p)) by comparing an elevation of the point with an elevation of a discrete and reduced number of points arranged on a straight line passing through a pixel being considered (p) and oriented in a circumferential direction.
摘要翻译：在对轮胎内表面上的浮雕元件进行快速分析的方法中，捕获表面的三维图像，并且将图像的每个像素分配为与对应于图像的点的地形高程成比例的灰度值像素，以获得起始图像。图像被变换为正交参考帧（OXY），其中横轴（OX）表示圆周值，纵轴（OY）表示径向值。通过将点的高程与布置在穿过像素的直线上的离散和减少数量的点的高度进行比较，将表面的每个点（即，每个像素）分配给高度梯度值（f（p））被考虑（p）并且在圆周方向上定向。

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