Carl Zeiss Industrielle Messtechnik Gmbh

Carl Zeiss Optotechnik Gmbh

Markus Basel

Marcus Steinbichler

Thomas Mayer

Alexander Frey

Christian Schleith

Herbert Daxauer

Tom Jaeckel

A method for determining an exposure, in particular an exposure time, for a recording in a method for determining the 3D coordinates of an object is provided, in which a pattern is projected onto the object and the light reflected by the object is recorded. To improve such a method, a recording of the object is produced with a predetermined exposure, in particular exposure time. A mask image of this recording is produced, in which mask image the regions of the object lying within the measurement volume are depicted. The exposure, in particular the exposure time, for the recording is determined depending on the predetermined exposure, in particular exposure time, depending on the mean greyscale value in the regions, lying within the measurement volume, of the recording with a predetermined exposure and depending on an ideal greyscale value.

Method for determining the exposure time for a 3D recording

In a method for determining the 3D coordinates of an object a pattern () is projected onto the object () by a projector (), the light reflected by the object () is captured by a camera (), and the shots recorded by the camera () are evaluated. Reference marks () on and/or beside the object () are recorded by a reference camera (). The reference camera () has a larger field of view () than the camera (). To improve such method, the reference camera () is connected with the camera () or with a 3D sensor () which comprises the projector () and the camera ().

Method and apparatus for determining the 3D coordinates of an object

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Raubling, Germany

Markus Basel