Abstract: The invention relates to a method and a system for measuring an object (2) by means of stereoscopy, in which method a pattern (3) is projected onto the object surface by means of a projector (9) and the pattern (3), which is designated as a scene and is projected onto the object surface, is captured by at least two cameras (4.1, 4.2, 4.3, 4.4), wherein correspondences of the scene are found in the images captured by the cameras (4.1, 4.2, 4.3, 4.4) by means of a computing unit (5) using image processing, and the object (2) is measured by means of the correspondences found. According to the invention, the cameras (4.1, 4.2, 4.3, 4.4) are intrinsically and extrinsically calibrated, and a two-dimensional and temporal coding is generated during the pattern projection, by (a) projecting a (completely) two-dimensionally coded pattern (3) and capturing the scene using the cameras (4.1, 4.2, 4.3, 4.

Abstract: The invention relates to a method and a system for measuring an object (2) by means of stereoscopy, in which method a pattern (3) is projected onto the object surface by means of a projector (9) and the pattern (3), which is designated as a scene and is projected onto the object surface, is captured by at least two cameras (4.1, 4.2, 4.3, 4.4), wherein correspondences of the scene are found in the images captured by the cameras (4.1, 4.2, 4.3, 4.4) by means of a computing unit (5) using image processing, and the object (2) is measured by means of the correspondences found. According to the invention, the cameras (4.1, 4.2, 4.3, 4.4) are intrinsically and extrinsically calibrated, and a two-dimensional and temporal coding is generated during the pattern projection, by (a) projecting a (completely) two-dimensionally coded pattern (3) and capturing the scene using the cameras (4.1, 4.2, 4.3, 4.

Abstract: A method for calibrating a measuring system uses at least one camera for determining the position of an object in a reference three-dimensional coordinate system. The external and internal parameters of the camera are calibrated in various steps and the position of the camera is determined with the aid of external measuring means in accordance with three steps. In the first step, the internal camera parameters are ascertained and fixedly assigned to the internal camera. In a second step, the position of the internal camera in the measuring system is determined. In a third step, the orientation of the internal camera is ascertained in the reference three-dimensional coordinate system by evaluating camera images.

Abstract: The invention relates to a method for planning an inspection path (2) for at least one optical picture-taking device (4), particularly a camera, for inspecting a three-dimensional object (3). The picture-taking device (4) and the object (3) are movable relative to each other by means of a displacement device (5, 6).

Abstract: The method of inspecting the surface of a three-dimensional body, includes moving at least one camera and at least one illuminating device relative to the surface of the three-dimensional body, taking pictures of the areas of the surface to be inspected during the movement of the at least one camera relative to the areas of the surface to be inspected, transmitting the pictures taken to a computer and evaluating the pictures in the computer to find any defects that are present. A system for performing the method is also described. In order to obtain high inspection quality, the camera, illumination device and the surface to be inspected are brought into plural different defined geometric relationships with each other during the inspecting of each of the areas on the surface, at least for a time period required to take one picture.

Abstract: The invention relates to a sensor for measuring the surface of an object, having a contrasting unit (3) for projecting a pattern onto the surface of the object, and having a camera (4) for recording of the pattern projected onto the surface of the object, in which the contrasting unit (3) has an LED projector (5). To achieve high precision and great robustness, the camera (4) and the LED projector (5) are located in the longitudinal direction. In addition, respective deflecting mirrors (8, 11) are assigned to the camera (4) and the LED projector (5) and are located on opposite ends, in the longitudinal direction of the sensor (1), of the housing (2) of the sensor (1).

Abstract: Disclosed are a method and a system for inspecting a periodic structure (1) by means of an optical image recorder which is provided with a pixel structure (2) and whose recorded image (6) is compared to a faultless reference image (4) of the periodic structure (1). In order to be able to reliably detect faults with simple means, the phase angle (phase X, phase Y) of the periodic structure (1) relative to the pixel structure (2) of the optical image recorder is determined in at least one position (X, Y) of the reference image (4). The recorded image (6) is subdivided into inspection areas (7), and the phase angle (phase X, phase Y) of the periodic structure (1) relative to the pixel structure (2) of the image recorder is determined for each inspection area (7). In order to compare an inspection area (7) to the reference image (4), a reference image area (8) is then selected whose phase angle (phase X, phase Y) corresponds to the inspection area (7).

Abstract: In the method for locating flaws on the surface of a three-dimensional object the flaws are detected and located using one or more optical image-taking device. When a picture is taken showing a flaw the location of the flaw on the object is determined with great accuracy from the design data for the object, the optical imaging properties of the optical image-taking device, and the positions of the optical image-taking device and the object. A marking system for marking the position of the flaws on the object, which are detected by the method, is also described, which includes plural marking heads and displacement devices for positioning and/or activating the marking heads independently of each other.

Abstract: The invention relates to a method for calibrating measuring system (1) which is based on a camera (4) and is used for determining an object (2) position in a reference three-dimensional co-ordinate system (3), wherein the external and internal parameters of the camera are calibrated in various steps and the camera (4) position (6) is determined with the aid of external measuring means. In order to optimise a calibration process, the inventive method comprises at least three steps consisting in determining the internal parameters of said camera (4) and firmly assigning said parameters thereto, in determining the position (6) of the camera (4) mounted on the measuring system (1) and in determining the orientation (7) of the camera (4) in the reference three-dimensional co-ordinate system (3) by evaluating the images thereof.

Abstract: The invention relates to a sensor for measuring the surface of an object, having a contrasting unit (3) for projecting a pattern onto the surface of the object, and having a camera (4) for recording of the pattern projected onto the surface of the object, in which the contrasting unit (3) has an LED projector (5). To achieve high precision and great robustness, the camera (4) and the LED projector (5) are located in the longitudinal direction. In addition, respective deflecting mirrors (8, 11) are assigned to the camera (4) and the LED projector (5) and are located on opposite ends, in the longitudinal direction of the sensor (1), of the housing (2) of the sensor (1).

Abstract: The present invention relates to a method and a marking system for locating flaws on a three-dimensional object (2), particularly on its surface, the defective points being detected and located using an optical picture-taking device (3,4). To locate a flaw with great accuracy, it is provided that the design data related to the object (2), the optical imaging properties of the picture-taking device (3,4), and the position of the optical picture-taking device (3, 4) and the object (2) are known when the picture is taken, and that the location of the flaw on the object (2) is determined and optionally marked.

Abstract: A method for effecting the movement of a handling device with at least one actuating member which can be moved by means of a control device about one or several axes, wherein a) an optically recognizable object and a course of movement is indicated to the control device of the handling device or an image processing device, b) the area of movement and/or working area of the handling device is captured using a camera, c) the image thus captured is evaluated with an image processing device such that the predefined object is recognized and the position and/or state of movement thereof is determined, especially in relation to the handling device, d) the control or image processing device calculates a control command for one or several actuators of the handling device from the position and/or state of movement of the recognized object and the course of movement in relation to the object, e) the control device issues a control command to each actuator to be moved according to said control command, and f) steps b) to

Abstract: The present invention relates to a method for inspecting the surfaces of a three-dimensional body (2), with which at least one camera and at least one illuminating device are moved relative to the surface of the object, pictures are taken of the areas of the surface to be inspected during the movement of the camera relative to the surface, and the pictures are transmitted to a computer (11) and are evaluated therein. The invention also relates to a corresponding system. In order to obtain high inspection quality, the camera, illumination device and the surface are brought into a defined geometric relationship with each other during the inspection of each area to be inspected on the surface, at least for the period of time required to take a picture.

Abstract: The invention relates to a method for planning an inspection path (2) for at least one optical picture-taking device (4), particularly a camera, for inspecting a three-dimensional object (3). The picture-taking device (4) and the object (3) are movable relative to each other by means of a displacement device (5, 6).