摘要:
The invention relates to a method and device for geometrically determining features of a workpiece, comprising an image processing sensor having a first beam path, said first beam path comprising at least one front optical unit facing the workpiece to be measured, and an optical splitter being mounted on the side of the front optical unit facing away from the workpiece. Said optical splitter connects a second beam path to the image processing beam path, a common beam path being formed, and said second beam path being associated with a second optical sensor, the image processing sensor and the second sensor being designed to directly measure the surface of the workpiece. The front optical unit is formed as an asphere and/or has a longitudinal chromatic aberration.
摘要:
Die Erfindung bezieht sich auf ein Verfahren zur Erzeugung und Auswertung eines Bildes von zumindest einem Abschnitt eines Messobjekts in einem Koordinatenmessgerät mit einer Kamera, wobei das Koordinatenmessgerät eingesetzt wird, das Mittel zur Relativbewegung zwischen dem Messobjekt und der Kamera zur Verfügung stellt und in das der optische Sensor integriert ist, wobei von dem zumindest einen Abschnitt Einzelbilder mit der Kamera aufgenommen werden, von denen zumindest einige Einzelbilder sich jeweils zumindest teilweise überlappen, und wobei zur Erzeugung des Bilds die Einzelbilder oder Signale dieser in Bezug zueinander ausgerichtet und zu einem Gesamtbild als das Bild des zumindest einen Abschnitts überlagert werden, wobei die Auswertung des Gesamtbildes im Wesentlichen auf die überlappenden Bereiche der Einzelbilder beschränkt wird und/oder die Auswertung des Gesamtbildes oder eines Teils von diesem unter Zugrundelegung der überlappenden Bereiche der diese aufweisenden Einzelbilder erfolgt, wobei das Verfahren zur Bilderzeugung bei Autofokusmessungen oder für die Bilderzeugung für Bildverarbeitungsmessungen während einer Kamerabewegung eingesetzt wird.
摘要:
The invention relates to a method for determining dimensions of one or more workpieces by means of image processing algorithms. In order to make it possible to determine dimensions extremely accurately, images taken from a section through a reconstructed voxel volume of a three-dimensionally imaging measurement method are evaluated with the aid of the image processing.
摘要:
The invention relates to a method for measuring the geometry of an object (12), particularly a work piece or a tool, by means of a co-ordination measuring device (10). The geometry of an object (12) is recorded by an optical sensor (14), for example a camera, and is represented in the form of an image content (32). Geometric structures (60 70) in the image content adapted to the measurement of the object (12), such as geometric elements or contours, are selected and subsequently evaluated. The aim of the invention is to enable even non-experienced operators to carry out a measurement in a fast and fault-free manner. When the image content (32) is changed, it is automatically analysed in relation to the geometric structures (60-70) adapted to the object measurement (12), and the adapted structures are marked and prepared for subsequent evaluation.
摘要:
The invention relates to a method for determining the deviation in the measured geometric dimensions and/or position of an object from definable desired values of said dimensions and/or position. Before determining the deviations the measurement values of the dimensions and/or position of the object are adapted to the desired values, taking into consideration definable tolerance values of said desired values of the dimensions and/or position of the object.
摘要:
The invention relates to a method and an arrangement for measuring the structure of an object. The structure is scanned by touch, by means of a scanning element whose position is optically detected. The force produced after the contact between the scanning element and the object is determined and optionally adjusted to constant values.
摘要:
The invention relates to a computer tomography method for dimensionally determining features of a measurement object, through which a radiation is passed in several rotational positions, wherein measurement deviations due to the scattered radiation or other physical effects are corrected. In order to avoid or correct measurement deviations in particular due to scattered radiation or due to other physical effects such as beam hardening, afterglow effects, or the like, it is proposed, for example, that the radiographs are corrected by means of synthetic radiographs, calculated from a geometry that is determined in advance or know or from a model of the geometry, wherein the geometry or the model of the geometry at least roughly corresponds to the measurement object.