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1. 发明申请

WO2017085651A1 METHOD AND LINE FOR CHECKING TYRES FOR VEHICLE WHEELS 审中-公开
标题翻译：车轮检查轮胎的方法和生产线
公开(公告)号：WO2017085651A1
公开(公告)日：2017-05-26
申请号：PCT/IB2016/056914
申请日：2016-11-17
申请人： PIRELLI TYRE S.P.A.
发明人： BOFFA, Vincenzo , CANTU', Marco , REGOLI, Fabio , BALLARDINI, Valeriano
IPC分类号： G01M17/02 , G01B11/00
CPC分类号： G01M17/027 , G01B11/25
摘要： The invention relates to a method and line for checking a tyre (2) for vehicle wheels in which it is provided to determine whether the tyre (2) is made according to a known model among a plurality of known models. If the tyre (2) is made according to a known model, the tyre (2) is inspected to search for any manufacturing defects by acquiring data representative of at least part of the surface of the tyre (2) through a set of image acquisition devices (282) set according to a setting associated with the known model of the tyre. If the tyre (2) is made according to an unknown model, the following steps are carried out in succession: • acquiring a first profile (300) of the tyre (2), wherein the acquisition of said first profile comprises acquiring at least a first part (301, 302) of the first profile (300) through first profile-acquisition devices (280) arranged according to predetermined positions; · determining a setting for second profile-acquisition devices (278) based on the first profile (300) acquired; • acquiring a second profile (400) of the tyre (2) through the second profile- acquisition devices (278) set according to the respective determined setting; · determining a setting for said set of image acquisition devices (282) based on the second profile (400) acquired; • cataloguing said unknown model as a known model and adding it to said plurality of known models, associating the setting thus determined therewith.
摘要翻译：本发明涉及一种用于检查车轮的轮胎（2）的方法和生产线，其中设置有用于确定轮胎（2）是否根据多个已知的模型。如果根据已知模型制造轮胎（2），则通过一组图像采集获取代表轮胎（2）的至少部分表面的数据来检查轮胎（2）以搜索任何制造缺陷装置（282）根据与轮胎的已知模型相关联的设定而设定。如果根据未知模型制造轮胎（2），则依次执行以下步骤：·获取轮胎（2）的第一轮廓（300），其中获取所述第一轮廓包括获取至少一个通过根据预定位置布置的第一轮廓获取装置（280）的第一轮廓（300）的第一部分（301,302）＆middot; 基于所获取的第一简档（300）确定第二简档采集设备（278）的设置; ·通过根据相应确定的设置设置的第二轮廓获取设备（278）获取轮胎（2）的第二轮廓（400）＆middot; 基于所获取的第二简档（400）确定所述一组图像采集设备（282）的设置; ●将所述未知模型编目为已知模型，并将其添加到所述多个已知模型中，将由此确定的设置与之关联。

2. 发明申请

WO2017001968A1 METHOD AND APPARATUS FOR DETECTING DEFECTS ON THE SURFACE OF TYRES 审中-公开
标题翻译：检测轮胎表面缺陷的方法和装置
公开(公告)号：WO2017001968A1
公开(公告)日：2017-01-05
申请号：PCT/IB2016/053678
申请日：2016-06-21
申请人： PIRELLI TYRE S.P.A.
发明人： VANDINI, Lara , BALLARDINI, Valeriano , GHIDOTTI PIOVAN, Alessandro , REGOLI, Fabio
IPC分类号： G01M17/02 , G06T7/00 , G01N21/956
CPC分类号： G06T7/001 , G01M17/027 , G06T7/12 , G06T7/136 , G06T2207/20021 , G06T2207/20216 , G06T2207/20224 , G06T2207/30164
摘要： Method and related apparatus for detecting defects on a surface of a tyre, comprising: - providing the tyre (200); - acquiring at least one digital image of a portion of the surface, wherein each pixel of the image is associated with a luminosity value representative of the reflectivity and/or diffusivity and/or colour of a point of the surface corresponding to said each pixel; - calculating, for each pixel of the image, a first parameter representative of the second derivative calculated in said pixel on said luminosity values; - establishing whether each pixel belongs to a proposed defect as a function of said first parameter.
摘要翻译：用于检测轮胎表面上的缺陷的方法和相关装置，包括： - 提供所述轮胎（200）; - 获取所述表面的一部分的至少一个数字图像，其中所述图像的每个像素与表示对应于所述每个像素的所述表面的点的反射率和/或扩散率和/或颜色的亮度值相关联; - 对于所述图像的每个像素，计算表示所述像素在所述亮度值上计算的二次导数的第一参数; - 确定每个像素是否属于所提出的缺陷，作为所述第一参数的函数。

3. 发明申请

WO2018020415A1 METHOD AND STATION FOR CHECKING TYRES FOR VEHICLE WHEELS 审中-公开
标题翻译：用于检查车轮轮胎的方法和工作站
公开(公告)号：WO2018020415A1
公开(公告)日：2018-02-01
申请号：PCT/IB2017/054501
申请日：2017-07-25
申请人： PIRELLI TYRE S.P.A.
发明人： BOFFA, Vincenzo , TERSI, Luca , BALLARDINI, Valeriano
IPC分类号： G01M17/02
摘要： Method and station for checking a tyre (2) for vehicle wheels in a checking station (27). The checking station (27) comprises a background (49) with a support surface (36) lying on a plane perpendicular to a reference axis (Z), an image acquisition apparatus (47) to acquire at least one image (23) of the tyre arranged with a first outer lateral surface in contact with said support surface (37) and a second outer lateral surface (21) facing said image acquisition apparatus (47), an illumination system (50) and a computer (48) adapted to generate a working image (24) from said at least one acquired image (23) of the tyre. The method provides for the arrangement of the image acquisition apparatus (47), of the illumination system (50) and of the background (49) such as to generate a contrast, in said working image (24), between at least the entire second outer lateral surface (21) of the tyre and an area (22) circumferentially surrounding said tyre (2), said circumferentially surrounding area (22) corresponding to at least one part of the background (49), including at least one part of the support surface (36). The method also provides for the generation of the working image (24) from the acquired images and the processing of the working image (24) to carry out at least one checking procedure of the tyre (2) wherein the second outer lateral surface (21) of the tyre is distinguished from the circumferentially surrounding area (22) by means of said contrast.
摘要翻译：用于在检查站（27）中检查轮胎（2）以用于车轮的方法和工位。检验台（27）包括具有位于垂直于参考轴线（Z）的平面上的支撑表面（36）的背景（49），图像采集装置（47），用于采集至少一个图像（23）轮胎，其布置有与所述支撑表面接触的第一外侧表面和面对所述图像采集装置的第二外侧表面;照明系统和计算机，来自轮胎的所述至少一个采集图像（23）的工作图像（24）。该方法提供图像采集装置（47），照明系统（50）和背景（49）的布置，以便在所述工作图像（24）中在至少整个第二所述轮胎的外侧表面（21）和周向地围绕所述轮胎（2）的区域（22），所述周向周围区域（22）对应于所述背景（49）的至少一部分，所述至少一部分包括所述轮胎支撑表面（36）。该方法还提供从所获取的图像生成工作图像（24）以及处理工作图像（24）以执行轮胎（2）的至少一个检查程序，其中第二外侧表面（21））通过所述对比度与周向环绕区域（22）区分开来。

4. 发明申请

WO2017175099A1 APPARATUS AND METHOD FOR CHECKING TYRES 审中-公开
标题翻译：用于检查轮胎的装置和方法
公开(公告)号：WO2017175099A1
公开(公告)日：2017-10-12
申请号：PCT/IB2017/051822
申请日：2017-03-30
申请人： PIRELLI TYRE S.P.A.
发明人： BOFFA, Vincenzo , HELD, Alessandro , REGOLI, Fabio , BALLARDINI, Valeriano , CASADIO TOZZI, Giuseppe
IPC分类号： G01N21/95
摘要： Apparatus (1) for checking tyres, comprising : a support frame (2); a flange (3); and an acquisition system (4) of three-dimensional images of a surface of a tyre, the acquisition system being mounted on the support frame and comprising : a matrix camera (5), a linear laser source (7), and a reflecting surface (12) which intersects the propagation axis (9) of the linear laser beam and the optical axis (6) of the matrix camera (5), wherein a first angle (50) formed between a first section (14) and a second section (31) of the optical axis (6) mutually symmetrical with respect to a normal to the reflecting surface in the respective point of incidence to the reflecting surface, is obtuse, and wherein a second angle (51) formed between a first section (16) and a second section (32) of the propagation axis (9) mutually symmetrical with respect to a normal to the reflecting surface in the respective point of incidence to the reflecting surface, is obtuse.
摘要翻译：一种用于检查轮胎的设备（1），包括：支撑框架（2）;支撑框架法兰（3）; 和轮胎表面的三维图像的采集系统（4），所述采集系统安装在所述支撑框架上并且包括：矩阵相机（5），线性激光源（7）和反射表面（12），其与线性激光束的传播轴（9）和矩阵相机（5）的光轴（6）相交，其中第一部分（14）和第二部分其特征在于，相对于反射面入射到反射面的相应入射点的法线相互对称的光轴（6）的第一角度（31）是钝角，并且其中在第一部分（16））和传播轴（9）的第二部分（32）相对于入射到反射表面的相应入射点处的反射表面的法线相互对称，是钝的。

5. 发明申请

WO2017115230A1 METHOD FOR MANAGING A TYRE CHECKING APPARATUS AND APPARATUS FOR TYRE CHECKING ADAPTED TO OPERATE ACCORDING TO SAID METHOD 审中-公开
标题翻译：用于管理用于轮胎检查的轮胎检查设备和设备的方法，所述轮胎检查设备适于根据所述方法操作
公开(公告)号：WO2017115230A1
公开(公告)日：2017-07-06
申请号：PCT/IB2016/057883
申请日：2016-12-21
申请人： PIRELLI TYRE S.P.A.
发明人： BOFFA, Vincenzo , REGOLI, Fabio , BALLARDINI, Valeriano , MONTI, Stefano , TERSI, Luca
IPC分类号： B29D30/00 , G01M17/02
CPC分类号： B29D30/0061 , B29D2030/0066 , G01M17/027
摘要： Method for managing a tyre checking apparatus, said apparatus (1) comprising : an optical structure (430) for said check, said optical structure (430) comprising at least a first optical tool (43a); a first member (40a) adapted to move said first optical tool (43a). Said tyre checking comprises at least a first sequence of checks executed on a first tyre in a first duration, followed by a second sequence of checks executed on a second tyre in a second duration. Said method comprises: executing, by means of said optical structure (430), a first check (C1) on said first tyre; executing, by means of said optical structure (430), a second check (C2) on said first or second tyre; wherein said first check (C1) and said second check (C2) are separated by a time interval (T1) shorter than or equal to the sum of said first duration and second duration; wherein said first optical tool (43a) is not used for tyre checking during said time interval (T1); wherein said method comprises verifying said first optical tool (43a) during said time interval (T1). A tyre checking apparatus (1) is also described, adapted to operate according to said method.
摘要翻译：一种用于管理轮胎检查设备的方法，所述设备（1）包括：用于所述检查的光学结构（430），所述光学结构（430）至少包括第一光学工具（43a）; 第一构件（40a），适于移动所述第一光学工具（43a）。所述轮胎检查包括在第一持续时间内在第一轮胎上执行的至少第一检查序列，随后在第二持续时间内在第二轮胎上执行的第二检查序列。所述方法包括：借助于所述光学结构（430）在所述第一轮胎上执行第一检查（C1）; 借助于所述光学结构（430）在所述第一轮胎或第二轮胎上执行第二检查（C2）其中所述第一检查（C1）和所述第二检查（C2）以短于或等于所述第一持续时间和第二持续时间之和的时间间隔（T1）分开; 其中所述第一光学工具（43a）在所述时间间隔（T1）期间不用于轮胎检查; 其中所述方法包括在所述时间间隔（T1）期间验证所述第一光学工具（43a）。还描述了一种轮胎检查设备（1），其适于根据所述方法进行操作。

6. 发明申请

WO2017001970A1 METHOD AND APPARATUS FOR DETECTING DEFECTS ON THE SURFACE OF TYRES 审中-公开
标题翻译：检测轮胎表面缺陷的方法和装置
公开(公告)号：WO2017001970A1
公开(公告)日：2017-01-05
申请号：PCT/IB2016/053680
申请日：2016-06-21
申请人： PIRELLI TYRE S.P.A.
发明人： GHIDOTTI PIOVAN, Alessandro , BALLARDINI, Valeriano , BOFFA, Vincenzo , REGOLI, Fabio , DI STEFANO, Luigi
IPC分类号： G01M17/02 , G06T7/00 , G01N21/956
CPC分类号： G06T7/001 , G01M17/027 , G06K9/2027 , G06K9/2036 , G06K9/6214 , G06T7/12 , G06T7/136 , G06T2207/20021 , G06T2207/20216 , G06T2207/20224 , G06T2207/30164
摘要： Method and related apparatus for detecting defects on a surface of a tyre, comprising: providing the tyre (200); acquiring a digital image comprising a structure comprising sections representative of linear elements of a pattern in a surface portion and representative of possible elongated defects, said sections of the structure having a respective orientation; providing a model of the pattern in the surface portion, wherein each pixel is associated with a first index representative of whether the pixel belongs or not to a pattern section and a second index representative of an at least local orientation of the pattern section passing through said pixel; calculating for each pixel of the structure a third index representative of the orientation of the structure section passing through said pixel; and establishing, for each pixel of the structure having a corresponding pixel in the pattern model belonging to the pattern, whether said pixel of the structure belongs to a proposed defect on the basis of the comparison between the third index and the second index associated with the corresponding pixel in the pattern model.
摘要翻译：一种用于检测轮胎表面上的缺陷的方法和相关装置，包括：提供轮胎（200）; 获取数字图像，其包括包括表示表面部分中的图案的线性元素的部分并且代表可能的细长缺陷的结构的结构，所述结构的所述部分具有相应的取向; 提供表面部分中的图案的模型，其中每个像素与表示所述像素是否属于图案部分的第一索引相关联，以及表示所述图案部分的至少局部取向通过所述图案部分的第二索引像素; 对结构的每个像素计算代表穿过所述像素的结构部分的取向的第三索引; 以及对于属于所述模式的所述模式模型中具有对应像素的所述结构的每个像素，基于所述第三索引与所述第二索引相关联的所述第二索引之间的比较来确定所述结构的所述像素是否属于所提出的缺陷模式模型中的相应像素。

7. 发明申请

WO2015004587A1 METHOD AND APPARATUS FOR CONTROLLING TYRES IN A TYRE PRODUCTION LINE 审中-公开
标题翻译：在轮胎生产线上控制轮胎的方法和装置
公开(公告)号：WO2015004587A1
公开(公告)日：2015-01-15
申请号：PCT/IB2014/062912
申请日：2014-07-07
申请人： PIRELLI TYRE S.P.A.
发明人： BOFFA, Vincenzo , PECE, Gabriele , BALLARDINI, Valeriano
IPC分类号： G01M17/02 , G01N21/17 , G01B11/16 , G01B11/24 , G01N21/88
CPC分类号： G01N21/954 , G01M17/027 , G01N21/17 , G01N21/8851 , G01N21/95 , G01N21/952 , G01N2021/8887
摘要： Method, and relative apparatus (100), for controlling tyres in a production line, comprising: predisposing a tyre (200) to be controlled; elastically deforming a lateral wall portion of the tyre by imparting a compression force on an outer contact surface of the lateral wall portion, the compression force having axial direction and sense directed towards the middle line plane; illuminating an inner and/or outer surface of the lateral wall portion and detecting an image of the illuminated surface; generating a control signal representative of the detected image; and analysing the control signal in order to detect the possible presence of flaws on the lateral wall portion.
摘要翻译：用于控制生产线中的轮胎的方法和相关设备（100），包括：倾向于要控制的轮胎（200）; 通过在侧壁部分的外接触表面上施加压缩力来使轮胎的侧壁部分弹性变形，所述压缩力具有轴向方向和朝向中间线平面的感觉; 照亮所述侧壁部分的内表面和/或外表面并检测所述被照射表面的图像; 产生表示所检测图像的控制信号; 并且分析控制信号以便检测侧壁部分上可能存在缺陷。

8. 发明申请

WO2017115239A1 METHOD FOR SETTING UP A TYRE CHECKING APPARATUS, SETUP DEVICE USED IN SAID METHOD 审中-公开
标题翻译：用于设置轮胎检查装置的方法，在所述方法中使用的设置装置
公开(公告)号：WO2017115239A1
公开(公告)日：2017-07-06
申请号：PCT/IB2016/057921
申请日：2016-12-22
申请人： PIRELLI TYRE S.P.A.
发明人： BOFFA, Vincenzo , MARCHINI, Maurizio , REGOLI, Fabio , BORACCO, Stefano , CANTU', Marco , BALLARDINI, Valeriano , MONTI, Stefano
IPC分类号： G01M11/02 , G01M17/02 , G01B21/04
CPC分类号： G01M17/027 , G01B11/25 , G01B21/042 , G01M11/0264
摘要： Method for setting up a tyre checking apparatus, said apparatus (1) comprising at least: a support base (34) for a tyre (2); a first acquisition device (430) and a second acquisition device (43a) for acquiring images representative of said tyre (2) positioned on said support base (34); a first robotic member (40a) for moving said second acquisition device (43a). Said method comprises: providing a setup device (100) comprising : a first wall (110) having first predefined shapes (F1); a second wall (120) having second predefined shapes (F2), said second wall (120) being substantially parallel and non-coplanar to said first wall (110); a top surface (130); a central reference (140) arranged on said top surface (130). Said method also comprises: executing at least one of a first set-up and a second set-up. Said first set-up sets the first acquisition device (430), and comprises: positioning said setup device (100) on said support base (34) in a first position (PI); carrying out a first group of movements relative to said setup device (100); executing a calibration of said first acquisition device (430) as a function of said first predefined shapes (F1) and second predefined shapes (F2). Said second set-up sets said first robotic member (40a) that moves said second acquisition device (43a) and comprises: positioning said setup device (100) on said support base (34) in a second position (P2); carrying out a second group of movements relative to said setup device (100); executing a configuration of said first robotic member (40a) as a function of positions taken by said central reference (140). The invention also describes a setup device (100) adapted for being used in said method.
摘要翻译：所述装置（1）至少包括：用于轮胎（2）的支撑基座（34）;用于在所述支撑基座（34）与所述轮胎第一采集装置（430）和第二采集装置（43a），用于采集代表位于所述支撑基座（34）上的所述轮胎（2）的图像; 用于移动所述第二采集装置（43a）的第一机器人构件（40a）。所述方法包括：提供设置装置（100），其包括：具有第一预定形状（F1）的第一壁（110）具有第二预定形状（F2）的第二壁（120），所述第二壁（120）与所述第一壁（110）基本平行且不共面; 顶表面（130）; 布置在所述顶表面（130）上的中央参考（140）。所述方法还包括：执行第一建立和第二建立中的至少一个。所述第一装置设定第一采集装置（430），并且包括：将所述设定装置（100）定位在所述支撑基座（34）上的第一位置（PI）中; 执行相对于所述设置装置（100）的第一组运动; 根据所述第一预定形状（F1）和第二预定形状（F2）执行所述第一采集装置（430）的校准。所述第二装置设定移动所述第二采集装置（43a）的所述第一机器人构件（40a），并且包括：在第二位置（P2）将所述设定装置（100）定位在所述支撑基座（34）上; 执行相对于所述设置装置（100）的第二组运动; 根据所述中央参考（140）所采取的位置执行所述第一机器人构件（40a）的配置。本发明还描述了适用于所述方法的设置装置（100）。

9. 发明申请

WO2017103872A1 METHOD AND DEVICE FOR CHECKING TYRES 审中-公开
标题翻译：用于检查轮胎的方法和设备
公开(公告)号：WO2017103872A1
公开(公告)日：2017-06-22
申请号：PCT/IB2016/057711
申请日：2016-12-16
申请人： PIRELLI TYRE S.P.A.
发明人： HELD, Alessandro , BOFFA, Vincenzo , PECORARO, Daniele , BALLARDINI, Valeriano , ENGELSBERGER, Josef , LEITNER, Bernd
IPC分类号： G01M17/02
CPC分类号： G01M17/027
摘要： The present invention relates to a device (10) for checking a tyre (200), the device (10) comprising: a detection system (104) comprising a camera (105) having an optical plane (107) passing through the camera (105) and defining a focal plane (121); a first light source (110), a second light source (108) and a third light source (109) adapted for emitting a first light radiation, a second light radiation and a third light radiation, respectively to illuminate a surface portion of said tyre at or close to said focal plane (121), said second light source (108) and said third light source (109) being arranged at opposite sides with respect to said optical plane (107); where said first light source (110) is fixed with respect to said detection system (104) and said second light source (108) and third light source (109) are adapted to be movable from a first inactive configuration where they are controlled to not emit said second light radiation and third light radiation and wherein the distance (d2, d3) of said second light source (108) and of said third light source (109) from said focal plane (121) is greater than the distance (dl) of said first light source (110) from said focal plane (121) to an active configuration wherein they are adapted for emitting at least one among said second light radiation and said third light radiation and wherein the distance (d2, d3) of said second source (108) and of said third source (109) from said focal plane (121) is equal to or less than the distance (dl) of said first source (110) from said focal plane (121); and a drive and control unit (140) adapted for activating said detection system (104) to acquire a first image and at least a second image of a first surface portion and a second surface portion of said tyre (200) in said inactive configuration and in said active configuration, respectively.
摘要翻译：本发明涉及一种用于检查轮胎（200）的装置（10），所述装置（10）包括：检测系统（104），其包括具有光学平面的照相机（105） 107）穿过照相机（105）并限定焦平面（121）; 第一光源（110），第二光源（108）和第三光源（109），所述第一光源适于分别发射第一光辐射，第二光辐射和第三光辐射以照射所述轮胎的表面部分在所述焦平面（121）处或附近，所述第二光源（108）和所述第三光源（109）相对于所述光学平面（107）布置在相对侧; 其中所述第一光源（110）相对于所述检测系统（104）是固定的，并且所述第二光源（108）和第三光源（109）适于从它们被控制到不控制的第一不活动配置发射所述第二光辐射和第三光辐射，并且其中所述第二光源（108）和所述第三光源（109）距所述焦平面（121）的距离（d2，d3）大于所述距离（d1）将所述第一光源（110）从所述焦平面（121）移动到主动配置，其中它们适于发射所述第二光辐射和所述第三光辐射中的至少一个，并且其中所述第二光源（110）的距离（d2，d3）所述第一光源（108）和来自所述焦平面（121）的所述第三光源（109）的距离等于或小于所述第一光源（110）距所述焦平面（121）的距离（d1）。以及驱动和控制单元（140），其适于启动所述检测系统（104）以获取所述轮胎（200）的第一表面部分和第二表面部分的处于所述不活动构造的第一图像和至少第二图像，以及在所述活动配置中。

10. 发明申请

WO2016103131A1 METHOD AND APPARATUS FOR DETECTING DEFECTS ON TYRES IN A TYRE PRODUCTION PROCESS 审中-公开
标题翻译：用于检测轮胎生产过程中的轮胎缺陷的方法和装置
公开(公告)号：WO2016103131A1
公开(公告)日：2016-06-30
申请号：PCT/IB2015/059771
申请日：2015-12-18
申请人： PIRELLI TYRE
发明人： MONTI, Stefano , BALLARDINI, Valeriano , REGOLI, Fabio
IPC分类号： G01M17/02 , G06T7/00
CPC分类号： G01M17/027 , B29D30/00 , G06T7/001 , G06T2207/20036 , G06T2207/20192
摘要： A method and apparatus for detecting defects on tyres in a tyre production process are described. The method comprises receiving (202) a reference image (l ref ) of a surface portion of a reference tyre substantially defects-free, comprises providing (203) a sample tyre to be analysed, comprises illuminating (204) a surface portion of the sample tyre with a raking light source, comprises acquiring (205) a sample image (l cmp ) of the illuminated surface portion of the sample tyre, comprises extracting (207) the edges from the reference image and from the sample image and respectively generating an edge reference image (l ref_edg ) comprising the edges included in the reference image and an edge sample image (l cmp_edg ) comprising the edges included in the sample image, comprises carrying out a dilation (208) of the edges of the edge reference image (l ref_edg ) and generating therefrom a dilated edge reference image (l ref_edg_di ), comprises comparing (209) the edge sample image (l cmp_edg ) with respect to the dilated edge reference image (l ref_edg_di ) and generating an edge image of possible defects (I edg_pd ) comprising the edges that are included in the edge sample image and are not included in the dilated edge reference image, and comprises identifying as possible defects the edges included in the edge image of possible defects.
摘要翻译：对轮胎制造工序中的轮胎的缺陷检测方法和装置进行说明。该方法包括接收（202）基本上无缺陷的参考轮胎的表面部分的参考图像（lref），包括提供（203）待分析的样品轮胎（203），包括照射（204）样品轮胎的表面部分具有耙光源，包括获取（205）样本轮胎的被照射表面部分的样本图像（lcmp），包括从参考图像和样本图像中提取（207）边缘并分别产生边缘参考图像（lref_edg）包括包括在参考图像中的边缘和包括包含在样本图像中的边缘的边缘样本图像（lcmp_edg），包括执行边缘参考图像（lref_edg）的边缘的扩张（208）并从其生成扩展边缘参考图像（lref_edg_di）包括将边缘样本图像（lcmp_edg）相对于扩张边缘参考图像（lref_edg_di）进行比较（209）并生成可能的边缘图像缺陷（Iedg_pd）包括边缘样本图像中包括的边缘并且不包括在扩张边缘参考图像中，并且包括将包括在可能缺陷的边缘图像中的边缘识别为可能的缺陷。

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