发明名称 |
DETECCAO DE IRREGULARIDADES NUMA SUPERFICIE CONVEXA DO GENERO DE UM FLANCO DE UM PNEUMATICO COM FILTRAGEM PASSA-BANDA |
摘要 |
A device for the contactless detection of a potentially existing essentially edge-free irregularity in a convex surface, which has a structuring that is delimited by edges, comprises a unit for creating a three-dimensional representation of the surface, a unit for extracting the convexity from the three-dimensional representation of the surface and for smoothing the edges of the structuring so as to obtain a convex-free representation of the convex surface which exhibits the irregularity and the structuring, whose edges have now been smoothed, a unit for comparing the convex-free representation with a threshold value so as to identify areal regions of the convex-free representation which are determined by a predetermined relationship to the threshold value, and a unit for analyzing the areas of the identified regions, a region being detected as an irregularity if its area exceeds a predetermined area. When this device is used to carry out quality control of tires, bulges or constrictions can therefore be identified with certainty in real-time operation and can be distinguished from an inscription or marking which has been intentionally provided on the tire. |
申请公布号 |
PT1123483(E) |
申请公布日期 |
2005.01.31 |
申请号 |
PT19990944369T |
申请日期 |
1999.08.12 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWAND;RSCHUNG E.V. |
发明人 |
KOSTKA, GUENTHER;SCHMITT, PETER;HASSLER, ULF;HANKE, RANDOLF |
分类号 |
G01B11/25;G01M17/02;(IPC1-7):G01B21/20;G01B11/24 |
主分类号 |
G01B11/25 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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