3100results about "Mechanical counters/curvatures measurements" patented technology

An integrated system is described in which digital image data of a patient, obtained from a variety of image sources, including CT scanner, X-Ray, 2D or 3D scanners and color photographs, are combined into a common coordinate system to create a virtual three-dimensional patient model. Software tools are provided for manipulating the virtual patient model to simulation changes in position or orientation of craniofacial structures (e.g., jaw or teeth) and simulate their affect on the appearance of the patient. The simulation (which may be pure simulations or may be so-called “morphing” type simulations) enables a comprehensive approach to planning treatment for the patient. In one embodiment, the treatment may encompass orthodontic treatment. Similarly, surgical treatment plans can be created. Data is extracted from the virtual patient model or simulations thereof for purposes of manufacture of customized therapeutic devices for any component of the craniofacial structures, e.g., orthodontic appliances.

The top-view profiles of repeating structures in a wafer are characterized and parameters to represent variations in the top-view profile of the repeating structures are selected. An optical metrology model is developed that includes the selected top-view profile parameters of the repeating structures. The optimized optical metrology model is used to generate simulated diffraction signals that are compared to measured diffraction signals.

A portable coordinate measurement machine comprises an articulated arm having jointed arm segments. The arm includes a base having an integrated magnet mount therein for attaching the arm to a magnetic surface.

A device and method for measuring deviations in shape of a generally cylindrical workpiece is disclosed. The device enables measurement of a number of shape-defining parameters while the workpiece is positioned in a machine tool, so that the workpiece does not have to be removed from the machine tool in order for the measurements to be taken. A steadying rest, for use on machine tools to hold a workpiece, especially one having a longitudinal central axis that is rotationally unsymmetrical or unstable with respect to the machining tool, in position to enable measurement of the shape defining parameters and shape deviations while the workpiece is mounted on the machine tool, is also disclosed.

A method for inspecting a honeycomb structured body of the present invention is a method for inspecting a honeycomb structured body comprising a pillar-shaped honeycomb fired body having a multitude of cells placed in parallel with one another in the longitudinal direction with a cell wall therebetween, the method comprising: measuring the shape of the honeycomb structured body in the longitudinal direction through preparing a contact measurement apparatus including a reference surface, a rail disposed perpendicularly to the reference surface, and a measurement probe including a contacting probe configured to move along the rail; contacting one end face of the honeycomb structured body with the reference surface; and moving the measurement probe in a direction nearing the reference surface to contact the contacting probe with the other end face of the honeycomb structured body.

A Railroad Surveying and Monitoring System configured on a mobile platform for surveying, monitoring, and analyzing rail position and superstructure and terrain substructure of railroad tracks (20a,b) or other structures. The system employs two or more High Accuracy Differential Global Positioning System devices (110,112), ground penetrating radar devices (116), terrain conductivity instruments (118), optical cameras (124), and data receivers and processors (126), which in turn process, display, and store the data in a usable database. Precise coordinate data generated from a High Accuracy Global Positioning System provides both location data for subsurface sensors and surface sensors and rail position coordinates to monitor track displacements during track inspection in real time.

A measuring method and system involving a measuring coordinate probe, which can be moved precisely, by appropriate actuators, with respect to a positioning platform (60) on which the probe is mounted; and whose position relative capable to said positioning platform (60) can be measured, by suitable encoders (780). The invention can be carried out with probes, actuators and encoders of different nature. The actuators (730) preferably allow the motion of the probe according to two or more independent degrees of freedom, so that the probe itself can be moved in a plane, or in a three-dimensional region of space, and its orientation can be chosen, within some suitable limits. The method and system of the invention provide very exact local measurement, even if the platform (60) does not deliver the very best precision

A method of calibrating a probe mounted on a machine in which the probe has a probe calibration matrix which relates the probe outputs in three orthogonal axes to the machine's X, Y and Z coordinate system. A datum ball mounted on the machine is bi-directionally scanned by the probe in one or more planes. For each plane, the mean direction of two approximate probe vectors in the plane is rotated about an axis orthogonal to that plane until the apparent material condition from the scan in each direction is the same. This process may be iterative. The mean values of the directions of the probe vectors for each plane are rotated, thus forming a corrected probe calibration matrix. The datum ball is preferably bi-directionally scanned in three orthogonal planes.

A system for inspecting railroad ties in a railroad track includes a light generator, an optical receiver and a processor. The light generator is oriented to project a beam of light across the railroad track while moving along the railroad track in a travel direction. The optical receiver is oriented to receive at least a portion of the beam of light reflected from the railroad track and configured to generate image data representative of a profile of at least a portion of the railroad track. The processor is configured to analyze the image data by applying one or more algorithms configured to find boundaries of a railroad tie and determine one or more condition metrics associated with the railroad tie.

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.

A method is provided for assembling a measurement device for use in measuring a machine component. The method includes providing a coordinate measuring machine (CMM). The method also includes combining ultrasonic inspection (UT) capabilities and CMM capabilities to form an inspection probe. The inspection probe is installed on the CMM so that the inspection probe measures external boundaries of the machine component with the CMM capabilities and substantially simultaneously measures internal boundaries of the machine component with the UT capabilities.

A surface-tracking measuring machine is provided, in which measurement range is enlarged while keeping a measuring force, responsivity, resolution thereof. For the object, the surface-tracking measuring machine has a frame (10), a probe (11) swingably supported by the frame (10) and having a tracer (15) at an end thereof, a measuring force controller (21) for controlling the measuring force applied to the probe, a displacement detector (31) for detecting a displacement of the probe, a measuring force detector (41) for detecting the measuring force applied to the probe, and a controller (51) for comparing a measuring force detected value detected by the measuring force detector and a previously commanded measuring force command value and to control the measuring force controller so that the measuring force detected value is equal to the measuring force command value.

The present invention relates to an improved method for the simultaneous calibration and qualification of a non-contact probe on a localizer using a single artifact, in which non-contact probe readings and localizer readings are synchronised using parameters determined simultaneously with calibration and qualification. The invention also relates to a non-contact probe and other devices, and a computer program for performing the invention.

A 3D shape measurement apparatus for measuring a 3D shape of an object existing on a measurement area, comprising, a pattern projection unit for projecting a pattern having a periodicity onto the measurement area, and a capturing unit for capturing an image of the area where the pattern is projected, wherein the measurement area is specified by a reference plane, a projection area of the pattern projection unit, and a capturing area of the capturing unit, and the pattern projection unit projects the pattern to be focused on the reference plane. The apparatus further comprises a first calculation unit for calculating phase information of a pattern of the captured image, a second calculation unit for calculating defocus amounts of the pattern in the captured image, and a third calculation unit for calculating a 3D shape of the object based on the phase information and the defocus amounts.

A surface scan measuring device, a surface scan measuring method, a surface scan measuring program and a recording medium storing such a program which can appropriately adjust the scanning speed, the sampling pitch and other measurement parameters according to the surface condition of a workpiece are provided. The surface scan measuring device includes a radius of curvature computing section (543) for computing the radius of curvature of the scanning point from the measurement data acquired during the ongoing scanning operation, a moving speed deciding section (544) for deciding the moving speed of the scanning probe according to the computed radius of curvature and a sampling pitch deciding section (546) for deciding the sampling pitch according to the computed radius of curvature.

A downhole caliper instrument utilizing a magneto resistive sensor to determine the position of a caliper arm which extends to touch the surface of the borehole wall.

The present invention is directed to a method for custom fitting an article to a human being having the steps of defining a first set of human body dimensions to be reported by the human being, defining a second set of human body dimensions to be inferred from said first set of human body dimensions, providing a first mathematical model relating said second set of human body dimensions to said first set of human body dimensions, wherein said mathematical model has been generated by statistical analysis of a human anthropometric database, obtaining a first set of values of said first set of body dimensions by report of the human being, computing a second set of values of said second set of human body dimensions from said first set of values of said first set of human body dimensions by using said first mathematical model, defining a set of article dimensions, providing a second mathematical model relating said article dimensions to said first set of human body dimensions and said second set of human body dimensions, computing a third set of values of said set of article dimensions from said first set of values of said first set of human body dimensions and said second set of values of said second set of human body dimensions by using said second mathematical model.

PCT No. PCT/FR96/01545 Sec. 371 Date Mar. 31, 1998 Sec. 102(e) Date Mar. 31, 1998 PCT Filed Oct. 6, 1996 PCT Pub. No. WO97/13614 PCT Pub. Date Apr. 17, 1997A device for measuring and/or checking the diameter of a cylindrical part (2) moving orbitally about an axis (3) during a grinding process. The device comprises a measuring head (7) coupled to a holder (18, 22) which is provided with a member (26) for engaging the circumference of the part (2), and is movably mounted in a direction parallel to itself on a frame (31) so that it can follow the orbital motion of the part (2). Grinding is performed by means of a tool (1) moving transversely to said axis (3), and the frame (31) is moved transversely to said axis and synchronised with the motion of the tool (1).

The present invention relates to adaptive 3D scanning wherein a scan sequence for obtaining full geometrical coverage of a physical object are created automatically and specifically for the physical object, by using a method and a system for producing a 3D computer model of a physical object, wherein the method comprises the following steps providing a scanner system, said scanner system comprising a scanner, and a computer connectable to and/or integrated in said scanner, said computer comprising a virtual model of said scanner, entering shape information of the physical object into the computer, creating in said computer a visibility function based on said virtual model and the shape information, said visibility function being capable of evaluating the coverage of areas of interest of the physical object by at least one predetermined scan sequence, establishing at least one scan sequence based on the evaluation of the visibility function, performing a scan of the physical object using said at least one scan sequence, and obtaining a 3D computer model of the physical object.