Carl Zeiss Industrielle Messtechnik Gmbh

Andreas Lotze

Bernd Georgi

Steffen Kunzmann

Hubert Lettenbauer

Daniel Görsch

Dominik Schmid

Martin Rummel

A method is disclosed for correcting deviations in a production process of an article. Initially, measured 3D surface coordinates of a first article are obtained and used to create a virtual image of the first article that is displayed on a display apparatus that is fastened to the user's head. The virtual image is superimposed on a predefined model image of the article which is also displayed on the display apparatus to enable the user to detect any region(s) where the measured first article deviates from the predefined model. The user is then able, via a gesture (e.g., hand movement) or head movement, to select a particular region of deviation and control the desired corrective action to be performed on subsequently produced articles. The present method thereby enables the experienced user to subjectively select the region(s) requiring correction action and the degree and type of corrective action to be taken.

Method for correcting deviations in a production process of an article using a head-mounted display

A method and a device determine material interfaces in a test object. The novel method generates three-dimensional image data of the test object or uses already existing three-dimensional image data of the test object. Image values of the image data are, or were, obtained by invasive radiation. An evaluation line for evaluating the image data relative to the test object is determined, a location of a material interface of the test object is determined by evaluating the image data of image values along the evaluation line so that the value of the first partial derivative of the image values in the direction of the evaluation line has a local maximum at the location of the material interface.

Method and device for identifying material boundaries of a test object

The invention relates to a method for determining the co-ordinates of a workpiece (). According to said method: a first co-ordinate system, which has a fixed position in relation to the workpiece (), is defined; first co-ordinates of the workpiece () are measured using a first co-ordinate measuring device (); second co-ordinates of the workpiece () are measured using a second co-ordinate measuring device (); and a common set of co-ordinates is generated from the first co-ordinates and the second co-ordinates in the first co-ordinate system or in a second co-ordinate system, which has a fixed position in relation to the workpiece (). The method can be used in particular to determine co-ordinates of a plurality of workpieces () during and/or after the production and/or processing of the workpieces ().

Method for determining the coordinates of a workpiece

A method for measuring a workpiece includes the steps: measuring measurement points on the surface of a workpiece using a measuring device; evaluating the measured measurement points in such a manner that a predetermined desired geometry of the workpiece to be measured and an actual geometry defined by the measured measurement points are mapped one on top of the other with the aid of a fitting method. In order to be able to adapt or fit the predetermined desired geometry of the workpiece to a measured workpiece, which had been altered, the application of a fitting method is suggested. In this method, transformation parameters are additionally provided for the fitting. These parameters permit a defined transformation of the desired geometry or of the actual geometry with regard to a targeted change of shape of the desired geometry or of the actual geometry.

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Dresden, Germany

Andreas Lotze