Abstract: The invention relates to an apparatus (1) and a method for contactless measuring of an object surface (2). In the proposed method, a temporally variable temperature distribution on the object surface (2) is generated by serially imprinting a plurality of thermal patterns (9) on the object surface (2). Subsequently, a thermal image of the object surface (2) is recorded by at least one thermal imaging camera (16, 17) at each of a plurality of successive recording instants, so that a respective sequence of thermal image values is acquired for points in an image plane (18, 19) of the thermal imaging camera or each of the thermal imaging cameras (16, 17).

Abstract: A device, for spatially measuring surfaces, includes a projector for projecting patterns into an object space, two cameras for recording pictures of a surface in the object space, and a control and evaluation unit for activating the cameras and evaluating the pictures. The projector includes a light source, a projection lens, at least one rotatably arranged pattern structure, and a drive for rotating the at least one pattern structure. The control and evaluation unit to: activate the cameras for simultaneously recording a picture at each of a plurality of successive points in time; identify corresponding points in the picture planes of the cameras, by way of evaluating a correlation function between the sequences of brightness values acquired for potentially corresponding points and maximizing a value of the correlation; and determine spatial coordinates of surface points by way of triangulation on the basis of the identified corresponding points.

Abstract: Method and device for non-contact measuring of surface contours. A sequence of stripe patterns, formed from a plurality of stripes of equal stripe direction are projected on a surface to be measured, wherein the stripe patterns are each aperiodic and have a sinusoidal brightness distribution and wherein, during the projecting of each of the stripe patterns, at least one image of the surface is captured by at least one camera. By the stripe pattern projected on the surface, corresponding points in the image planes of a camera and of a projection device used for projecting, or in the image planes of the cameras, are then identified by maximizing a correlation between sequences of brightness values recorded for each of the points, whereupon spatial coordinates of surface points on the surface are determined via triangulation on the basis of points identified as corresponding.

Abstract: A device, for spatially measuring surfaces, includes a projector for projecting patterns into an object space, two cameras for recording pictures of a surface in the object space, and a control and evaluation unit for activating the cameras and evaluating the pictures. The projector includes a light source, a projection lens, at least one rotatably arranged pattern structure, and a drive for rotating the at least one pattern structure. The control and evaluation unit to: activate the cameras for simultaneously recording a picture at each of a plurality of successive points in time; identify corresponding points in the picture planes of the cameras, by way of evaluating a correlation function between the sequences of brightness values acquired for potentially corresponding points and maximizing a value of the correlation; and determine spatial coordinates of surface points by way of triangulation on the basis of the identified corresponding points.

Abstract: A device and a method for non-contact recording of spatial coordinates of a surface includes a sensor head and a controller connected to the sensor head. The sensor head is designed as a portable hand-held device, a projector and two cameras. The controller is also designed as a portable device, with an electrochemical energy source housed in the controller or in the sensor head for power supply to the sensor head and the controller and no cable connection of the sensor head or the controller is provided to further stationary components of the device.

Abstract: The invention relates to a device for the contactless detection of a three-dimensional contour, comprising a projector with an imaging element and a projection lens for depicting a stripe pattern that is generated on the imaging element in an object space. The invention further comprises a camera arrangement for the surveillance of the object space from two different directions, having two camera lenses. The projector and the camera arrangement are housed together in a measurement head that can be handheld. The invention further relates to a method for detecting a three-dimensional contour using said device.

Abstract: The invention relates to a method for determining the spatial co-ordinates of an object, whereby the object is illuminated with patterns of light from at least two directions by means of a projection device. A calibrating camera and at least one measuring camera at least partially record the patterns of light projected onto the object, the calibrating camera being fixed in relation to the object. The projection device is calibrated by means of at least four phase measuring values, the measuring camera is calibrated using at least two phase measuring values, the three-dimensional co-ordinates of the object are calculated using at least one phase measuring value. The projection device and the measuring camera are thus transferred together into the desired positions.

Abstract: The invention relates to a method for determining the spatial co-ordinates of an object, whereby the object is illuminated with patterns of light from at least two directions by means of a projection device. A calibrating camera and at least one measuring camera at least partially record the patterns of light projected onto the object, the calibrating camera being fixed in relation to the object. The projection device is calibrated by means of at least four phase measuring values, the measuring camera is calibrated using at least two phase measuring values, the three-dimensional co-ordinates of the object are calculated using at least one phase measuring value. The projection device and the measuring camera are thus transferred together into the desired positions.

Abstract: This invention concerns a device for non-contact measurement of the surface of a three dimensional object in a measuring chamber with a projection device which projects a strip structure on the surface of an object, an observing device for recording the strip structure at measuring points on the surface of the object, a device for moving the object together with the observing device around a first axis of rotation, and an evaluation unit for determining the co-ordinates of the measuring points using the phase values of the strip structure in a predetermined co-ordinate system. A device (8) for moving the object about at least a second axis of rotation (D2) independent of the first axis of rotation (D1) and a calibration unit are provided, where the calibration unit (10) can determine the position of the second rotational axis (D2) in the predetermined co-ordinate system.