发明名称 |
METHOD FOR THE DETECTION OF A MARKER AFFIXED TO THE SURFACE OF AN OBJECT AND SYSTEM FOR IMPLEMENTING SAME |
摘要 |
The invention relates to a method for the detection of a marker affixed to the surface of an object, comprising the following operations: acquisition (40) of a photographic image (10) of a zone containing at least one marker (11); extraction of contours from the photographic image; detection of a marker-positioning contour from among the aforementioned contours, which corresponds to a set of confocal conics having a predetermined form; modelling of an image of the confocal conics in the form of a matrix comprising at least two symmetric matrices of order 3; analysis of said matrices in order to determine a perspective correction for the photographic image; detection, in the perspective-corrected photographic image, of an indexing element associated graphically with the positioning contour of the marker, and rotation-correction of the photographic image; detection, in the perspective- and rotation-corrected photographic image, of encoded data graphically associated with the positioning contour of the marker, and decoding (70) of said encoded data. The invention also relates to a marker-detection system using said method. |
申请公布号 |
WO2012076828(A2) |
申请公布日期 |
2012.06.14 |
申请号 |
WO2011FR52932 |
申请日期 |
2011.12.09 |
申请人 |
BOURY, SAMUEL;MEZZAROBBA, OLIVIER;GURDJOS, PIERRE;CHARVILLAT, VINCENT |
发明人 |
BOURY, SAMUEL;MEZZAROBBA, OLIVIER;GURDJOS, PIERRE;CHARVILLAT, VINCENT |
分类号 |
G06K19/06;G06K7/14 |
主分类号 |
G06K19/06 |
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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