发明授权
- 专利标题: VORRICHTUNG UND VERFAHREN ZUM AUSWERTEN EINER BESCHAFFENHEIT EINES OBJEKTS
- 专利标题(英): Device and method for evaluating a characteristic of an object
- 专利标题(中): 装置和方法用于评价对象的纹理
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申请号: EP02772209.9申请日: 2002-08-26
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公开(公告)号: EP1421559B1公开(公告)日: 2006-03-15
- 发明人: HASSLER, Ulf , OECKL, Steven , WENZEL, Thomas , HANKE, Randolf , KOSTKA, Günther
- 申请人: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- 申请人地址: Leonrodstrasse 54 80636 München DE
- 专利权人: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- 当前专利权人: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- 当前专利权人地址: Leonrodstrasse 54 80636 München DE
- 代理机构: Zinkler, Franz
- 优先权: DE10141807 20010827
- 国际公布: WO2003019180 20030306
- 主分类号: G06T7/00
- IPC分类号: G06T7/00
摘要:
The invention relates to a device for evaluating a characteristic of an object. Said device comprises a system (10) for preparing a three-dimensional representation of an object, said representation containing information about the characteristic to be evaluated. The three-dimensional representation is sub-divided into a plurality of partial areas (12) which are then evaluated one by one, each partial area of the plurality of partial areas being examined (14) in a two-dimensional manner, in order to determine data relating to a location in a partial area, in which the characteristic differs from a pre-determined characteristic. Using the data relating to the locations in the individual partial areas, a three-dimensional coherence analysis (16) provides a three-dimensional description of a three-dimensional location, the characteristic of said location differing from the pre-determined characteristic. By sub-dividing the three-dimensional representation into a plurality of partial areas which can be analysed in a two-dimensional manner, effective image processing algorithms can be used. The three-dimensionality can then be achieved again by means of a coherence analysis of the two-dimensional data. In this way, a geometrical reference model is superfluous and the resulting high requirement for memory and calculation time is eliminated.
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