3123results about "Mechanical counters/curvatures measurements" patented technology

The invention relates to a measurement method for determining the position and the orientation of a moving assembly in a base frame of reference. According to the invention, the method comprises the steps of: taking an image of an optical reference mark associated with the moving assembly by means of a first camera having a focal axis lying in a direction that is known in the base frame of reference; taking an image of an optical reference mark associated with the first camera by means of a second camera associated with the moving assembly; measuring the distance between a point associated with the first camera and a point associated with the second camera by using self-contained measurement means that are independent of said first and second cameras; and computing the position and the orientation of the moving assembly in the base frame of reference on the basis of the images taken and of the measured distance.

A sensing device having a sensing arrangement with a sensing end (32) for coming into contact with a surface to be scanned of a body (26), a camera (30), and a connecting device (34) for rigidly connecting the camera with the sensing end, the camera being arranged such that it can detect a surface (12) which is provided with marks suitable to be automatically photogrammetrically evaluated and on which the body to be scanned has been placed, when the sensing end comes into contact with different points of the surface to be scanned of the body. The sensing device further has a photogrammetric evaluation program for a computing unit (18), the computing unit being configured such that image signals generated by the camera can be routed to the computing unit and the evaluation program can calculate the 3D coordinates of the surface to be scanned from the sequence of recorded and transmitted image sections using the marks (22) suitable to be automatically photogrammetrically evaluated. A method of detecting a three-dimensional spatial shape of a body, in particular the spatial shape of an interior of a hollow body, the method including the following steps: fastening the body to be digitized on a surface (12) which, at known positions, is provided with marks (22) suitable to be automatically photogrammetrically evaluated, and providing the sensing device. Further steps are the scanning of a point on the spatial shape to be detected by means of the sensing end (32) of the sensing arrangement (28), recording at least one section of the photogrammetrically marked surface by the camera (30) while the sensing end scans the point, a plurality of marks suitable to be photogrammetrically evaluated being detected, and repeating the steps of scanning and recording for a multitude of different points of the spatial shape to be detected. The recorded images are evaluated by an evaluation program.

An endoscope apparatus includes an electronic endoscope that picks up a measurement object and produces a picked-up-image signal; an image-processing unit that produces a image signal based on the picked-up-image signal; and an measurement processing unit that undertakes measurement processing to the measurement object based on the image signal. The measurement processing unit includes: a reference point-designating unit that designates two reference points on the measurement object; an approximate-outline—calculating unit that calculates an approximate outline by approximating the outline of the measurement object based on the reference points; and a loss-composing points-calculating unit that calculates loss-composing points that constitute a loss outline formed on the measurement object based on the reference points and the approximate outline. This enables loss size measurement upon designating two reference points, thereby reducing complex operations and improving operability.

A computer-implemented method of generating an inspection program for a computer-controlled coordinate measuring probe comprises the steps of:(a) receiving nominal geometry data for a component,(b) receiving inspection requirement data specifying one or more selected shape characteristics of the component,(c) determining from the nominal geometry data and the inspection requirement data an inspection path for a computer-controlled coordinate measuring probe, the inspection path enabling the measuring probe to measure actual component coordinates associated with the selected shape characteristics, and(d) generating an inspection program for moving the computer-controlled coordinate measuring probe along the inspection path.