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METHOD FOR THE PRE-PROCESSING OF A THREE-DIMENSIONAL IMAGE OF THE SURFACE OF A TYRE USING SUCCESSIVE B-SPLINE DEFORMATIONS
METHOD FOR THE PRE-PROCESSING OF A THREE-DIMENSIONAL IMAGE OF THE SURFACE OF A TYRE USING SUCCESSIVE B-SPLINE DEFORMATIONS
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机译:连续B样条变形的轮胎表面三维图像预处理方法。
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摘要
The invention relates to a method for inspecting the surface of a tyre by comparing same with a three-dimensional reference surface, said surfaces comprising embossed markings. The invention comprises the following steps consisting in: determining the three-dimensional profile of the surface to be inspected; extracting the contours of the graphical elements; locating the characteristic points on the surface to be inspected and pairing said points with the corresponding characteristic points of the reference surface, such as to create a set of pairs of paired points; associating a first reset B-Spline surface with the reference surface, by associating the characteristic points of said surface with the control points of the first reset B-Spline surface; and deforming the reference surface, by moving the control points of the first reset B-Spline surface so that they are superimposed on the characteristic points of the surface to be inspected with which they were paired.
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