Abstract: A device for orientation and position detection of markings in three-dimensional space includes a marking unit, an optical image capture unit adapted to capture images thereof and an evaluation unit adapted to unambiguously determine the orientation and the position of the marking unit. The marking unit has exactly three markings arranged on a first straight line and exactly two markings arranged on a second straight line. The straight lines intersect in one of the markings so that there is exactly one common marking. The marking unit has a communication element arranged on the second straight line. Several marking units are provided, which are operatable simultaneously and which are adapted such that the marking units are distinguishable on the basis of the various communication elements. The evaluation unit is adapted to recognize all markings and/or communication elements in a captured image and to assign 2-dimensional image coordinates to them.

Abstract: A device for orientation and position detection of markings in three-dimensional space includes a marking arrangement, an optical image capture unit and an evaluation unit. The marking arrangement comprises two or more marking units each having three or more illuminating means arranged along a path. At least one marking unit belongs to a first marking unit type having at least three markings, and at least one other marking unit belongs to a second marking unit type having exactly two markings and a communication element arranged therebetween. At least one marking unit of the first type and at least one marking unit of the second type are arranged in a non-coplanar manner. The evaluation unit is adapted to recognize the marking units of the different types and to unambiguously determine the orientation and the position of the marking arrangement using the markings of recognized marking units of the different types.

Abstract: A device for orientation and position detection of markings in three-dimensional space includes a marking unit, an optical image capture unit adapted to capture images thereof and an evaluation unit adapted to unambiguously determine the orientation and the position of the marking unit. The marking unit has exactly three markings arranged on a first straight line and exactly two markings arranged on a second straight line. The straight lines intersect in one of the markings so that there is exactly one common marking. The marking unit has a communication element arranged on the second straight line. Several marking units are provided, which are operatable simultaneously and which are adapted such that the marking units are distinguishable on the basis of the various communication elements. The evaluation unit is adapted to recognize all markings and/or communication elements in a captured image and to assign 2-dimensional image coordinates to them.

Abstract: A method for determining a spatial correction of a primary ultrasonic emitter (2) by evaluating the ultrasonic signal emitted by the primary ultrasonic emitter (2) and received by at least three ultrasonic receivers (8, 9, 10) calibrated in space (11) is described, wherein the primary ultrasonic emitter (2) is arranged in a coplanar emitter array (5) with at least two secondary ultrasonic emitters (3, 4) and the nominal emission direction of the primary ultrasonic emitter (2) is known relative to the coplanar emitter array (5), and wherein the ultrasonic receivers (8, 9, 10) are positioned to receive ultrasonic signals from the primary ultrasonic emitter (2) and the at least two secondary ultrasonic emitters (3, 4) of the emitter array (5). The description is also concerned with a respective measurement device.