Steinbichler Optotechnik Gmbh

Carl Zeiss Optotechnik Gmbh

Matthias Prams

Marcus Steinbichler

Thomas Mayer

Rainer Huber

Junli Sun

Horst Winterberg

Armin Maidhof

Tobias Huber

Berndhart Leitner

Makus Leitner

Stefan Otte

Emanuel Fuchs

A tire inspection apparatus for the optical inspection of a tire () comprises a housing with a support surface () for the tire () to be inspected; several measuring heads (), each of which comprises an optical measuring system, for inspecting the inside tread surface () and/or the external lateral surface () of the tire (); and a positioning device () for moving some or all of the measuring heads (--) into a rest position and into a measuring position. To improve a tire inspection apparatus of this type, the measuring heads (--) and the support surface () are installed without freedom of rotation.

Tire inspection apparatus, tire inspection system, and method for inspecting tires

In an improved method for the representation of the surface of an object, the actual 3D data () of the surface of the object are determined. The desired 3D data of the surface of the object are modified on the basis of the actual 3D data () of the surface of the object. The desired 3D data () of the surface of the object and the modified desired 3D data () of the surface of the object are used as the 3D representation data (FIG.).

Method for representing the surface of an object

In a method for the 3D digitalization of an object with variable surface a plurality of camera pictures of partial surfaces of the object () are taken and put together for determining the 3D coordinates of the partial surface of the object (). Camera pictures are taken of partial surfaces of the object (), which overlap at their edges. For each camera picture the 3D coordinates of the associated partial surface of the object () are determined. The 3D coordinates of these partial surfaces of the object () are matched and put together by a matching method. Each camera picture is divided into subframes (---) which overlap at their edges and which overlap with the subframes of adjacent camera pictures. To the subframes (-), the associated 3D coordinates from the camera pictures are assigned. The 3D coordinates of the subframes (-) are matched and put together by a matching method. The method can iteratively be carried out several times.

Method for 3D digitalization of an object with variable surface

A method serves to determine the 3D coordinates of an object. The 3D coordinates of a partial surface () of the object are determined by a 3D measuring device (), which includes one or more detectors () and whose position is determined by a tracking system. The 3D coordinates of an adjacent partial surface () of the object are determined by the 3D measuring device (). The 3D coordinates of an overlap region of he adjacent partial surfaces () are put together by a matching method. In doing so, an error function is determined and minimized iteratively. Furthermore, the error function of a detector () of the 3D measuring device () is determined.

Method for determining the 3D coordinates of the surface of an object

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Rohrdorf, Germany

Matthias Prams