Abstract: A method for parameterizing a scene having a surface, on which at least two objects are disposed, using a camera disposed at a distance from the objects. The method includes: a) using the camera, producing an image of the scene, the image containing image data regarding the objects; b) recognizing at least two objects in the image by evaluation of the image data and assigning each recognized object to a specific object class; c) estimating an object size of each of the at least two recognized objects in accordance with at least one surface parameter characterizing the surface; d) for each of the at least two objects: calculating an individual probability that the object has the object size estimated in measure c); e) calculating a scene probability from the at least two calculated individual probabilities.

Abstract: A workpiece processing machine that includes: a beam emission head for providing a beam for processing the workpiece, an optical interferometer for splitting, redirecting, and detecting the beam, an adjustment element for changing a second portion of a power of the beam redirected from a retroreflector to a detector, and a control unit for actuating the adjustment element to control a ratio between a first power portion of the beam redirected from the workpiece to the detector and the second power portion of the beam redirected from the retroreflector to the detector to a target ratio.

Abstract: A method for identifying disruptions during a machining process, more particularly during a cutting process, includes: machining, more particularly cutting, a workpiece while moving a machining tool, in particular a laser machining head, and the workpiece relative to one another, recording an image of a region on the workpiece to be monitored, the region to be monitored being an interaction region of the machining tool with the workpiece, and evaluating the image of the region to be monitored. For the purpose of identifying at least one disruption of the machining process, the presence or the lack of a local intensity drop in an intensity profile within the interaction region is detected, during the evaluation of the image, in an advancement direction of the machining process. There is also described an associated machining apparatus.

Abstract: Methods for determining the quality of a weld of a workpiece welded by laser-beam welding, wherein at least a partial region of a molten pool and/or of a surrounding area of the molten pool is observed by means of a measuring system during the laser-beam welding and the quality of the weld of the welded workpiece is determined on the basis of the observation result. At least one characteristic value that correlates with molten pool oscillation of the molten pool is observed during the laser-beam welding and a measure of an amplitude of the molten pool oscillation and/or a measure of a frequency of the molten pool oscillation is determined from the observed time curve of the characteristic value. A probability and/or a frequency for the occurrence of hot cracks at the weld of the workpiece is inferred.

Abstract: A method for monitoring, in particular for controlling, a cutting process on a workpiece, includes focusing a machining beam, in particular a laser beam, on the workpiece, detecting a region of the workpiece to be monitored, the region including an interaction region in which the machining beam interacts with the workpiece, and determining at least one characteristic variable of the cutting process, in particular of a kerf formed during the cutting process, on the basis of the detected interaction region. In a fusion cutting process, a cutting front length of a cutting front formed at the kerf is determined as a characteristic variable on the basis of the detected interaction region. A corresponding device for monitoring, in particular for controlling, a cutting process on a workpiece, is also provided.

Abstract: A workpiece processing machine that includes: a beam emission head for providing a beam for processing the workpiece, an optical interferometer for splitting, redirecting, and detecting the beam, an adjustment element for changing a second portion of a power of the beam redirected from a retroreflector to a detector, and a control unit for actuating the adjustment element to control a ratio between a first power portion of the beam redirected from the workpiece to the detector and the second power portion of the beam redirected from the retroreflector to the detector to a target ratio.

Abstract: Methods for determining the quality of a weld of a workpiece welded by laser-beam welding, wherein at least a partial region of a molten pool and/or of a surrounding area of the molten pool is observed by means of a measuring system during the laser-beam welding and the quality of the weld of the welded workpiece is determined on the basis of the observation result. At least one characteristic value that correlates with molten pool oscillation of the molten pool is observed during the laser-beam welding and a measure of an amplitude of the molten pool oscillation and/or a measure of a frequency of the molten pool oscillation is determined from the observed time curve of the characteristic value. A probability and/or a frequency for the occurrence of hot cracks at the weld of the workpiece is inferred.

Abstract: A method for signaling to a central facility a fault of at least one subscriber line connected to a switching center via a respective connection line having a UK0 interface includes permanently activating the at least one subscriber line using the switching center. Each of the at least one subscriber line is monitored using a respective monitoring device looped into a UK0 interface on the respective connection line. A connection to the central facility is established via a separate subscriber line in response to a fault of a first of the at least one subscriber line detected by the respective monitoring device. An item of information related to the first subscriber line is transmitted to the central facility.

Abstract: The invention relates to a method for signaling a fault of at least one subscriber line to be monitored to a central facility and relates to a monitoring system for monitoring such a subscriber line. Up to now, it has been possible to continuously monitor ISDN base terminals. However, it bas been shown that not all messages and deactivations are logged in the switching center during the occurrence of a fault in an ISDN terminal. For this reason, the aim of the invention is to provide a method and monitoring system with which subscriber lines are permanently monitored and each fault message can be immediately reported to a central facility. To this end, at least one subscriber line to be monitored is firstly activated and is monitored by using a monitoring device (70, 72) that is looped in the UKO interface (20, 22) of a corresponding connection line (30, 32).

Abstract: The invention relates to a method that can be used in telecommunications networks, in particular comprising ISDN connections, to identify, retain and localize an interruption of speech/data channels. Currently, an impaired connection in the signaling channel cannot be differentiated from an unimpaired connection. The input of a tone which is continuously transmitted allows a pause in speech to be differentiated from an interruption of the speech/data channel from a measuring standpoint. It is therefore possible to measure and localize an interruption in an impaired connection. Alternatively, instead of creating a tone, a definable bit pattern can also be input into the B channel.