| 摘要 |
The invention relates to a method and an apparatus for a non-contact, three-dimensional determination of the shape of a dental technology object ( 10 ) whereby, to determine the space coordinates of the object's surface points to be measured, a thin stripe of light projected onto the object is measured by at least two matrix cameras ( 32, 34 ) to determine two space coordinates (Z- Y-coordinate) of a coordinate system, and the third space coordinate (X coordinate) is ascertained by determining the position of the object arranged on a measuring table ( 22 ) which is rotatable about an axis of rotation ( 20 ). For allowing, in an easy manner, a non-contact determination of the shape of the dental technology object, whereby the constructive effort to determine the spatial coordinates is kept low and the shape acquisition should still be performed highly precisely and at high speed, it is provided that the matrix camera is a color matrix camera with first, second and third pixels, that the matrix camera captures light in a range of wave lengths characteristic for one type of the pixels (first pixels) and the values at least of one of the other types of the pixels (second and third pixels) are analyzed to determine the two first location coordinates (Y- and Z-coordinates).
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