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507 results about "Surface scanning" patented technology

A surface test is a scan of a hard drive that is performed to look for bad sectors. Data stored in a bad sector can be corrupted or lost, and identifying bad sectors allows them to be flagged so that the computer knows not to use them in the future.

Orthodontic treatment planning using biological constraints

The invention relates to planning orthodontic treatment for a patient, including surgery, using biological constrains such as those arising from bone, soft tissue, and roots of patient's teeth. The invention disclosed herein provides capability to vary the movement ratio between the teeth and bone and soft tissue through treatment simulation to assess the risk factor associated with a particular treatment plan. The invention further provides capability to monitor results of the treatment to determine the actual movement ratio between the teeth and bone and soft tissue and update the database. Additionally, a method and apparatus are disclosed enabling an orthodontist or a user to create an unified three dimensional virtual craniofacial and dentition model of actual, as-is static and functional anatomy of a patient, from data representing facial bone structure; upper jaw and lower jaw; facial soft tissue; teeth including crowns and roots; information of the position of the roots relative to each other; and relative to the facial bone structure of the patient; obtained by scanning as-is anatomy of craniofacial and dentition structures of the patient with a volume scanning device; and data representing three dimensional virtual models of the patient's upper and lower gingiva, obtained from scanning the patient's upper and lower gingiva either (a) with a volume scanning device, or (a) with a surface scanning device. Such craniofacial and dentition models of the patient can be used in optimally planning treatment of a patient.
Owner:ORAMETRIX COM

Control method of manipulator grabbing control system based on binocular stereoscopic vision

The invention discloses a control method of a manipulator grabbing control system based on binocular stereoscopic vision. The control method comprises the following steps: camera parameters are calibrated, and a teaching manipulator is used for realizing conversion of a camera coordinate system and a manipulator coordinate system; line laser performs an arc surface scanning cloud motion, and a camera acquires images; laser lines of the images shot by the camera are respectively extracted; the positions of the laser lines are precisely determined by using a sub pixel algorithm; the homonymy point matching is performed for the laser lines extracted in the images; three-dimensional space coordinates of all points on the laser lines are calculated through a triangular measuring principle to finish scanning of workpieces in a scene so as to obtain point cloud data in the viewing field of the camera; a workpiece point cloud template is built, a manipulator grabbing point position is selected, and the obtained point cloud data is matched with the workpiece point cloud template to calculate a conversion relation of the two; the manipulator grabbing point position in the point cloud template is converted to a present coordinate, is converted to a coordinate under the manipulator coordinate system, and is transferred to the manipulator; and the manipulator finishes actuation actions.
Owner:HENAN ALSONTECH INTELLIGENT TECH CO LTD

Metro tunnel fracture surface deformation detection system

ActiveCN101943577AWith long-term useWith automatic monitoringMeasurement devicesRailway auxillary equipmentData processing systemEngineering
The invention discloses a metro tunnel fracture surface deformation detection system, belonging to the tunnel engineering monitoring technical field. The system comprises a fracture surface scanning device, a mileage positioning device, an electrical equipment control device, a power source, a track detection vehicle and a station data processing system, wherein, the fracture surface scanning device, the mileage positioning device and the electrical equipment control device are arranged on the track detection vehicle; the power source is respectively connected with the fracture surface scanning device, the mileage positioning device and the electrical equipment control device through a power source convertor to supply power for the fracture surface scanning device, the mileage positioning device and the electrical equipment control device; a PLC controller is arranged in the electrical equipment control device; a rotary coder in the mileage positioning device, a sensor in the fracture surface scanning device and a rotary table stepped driver are respectively connected with the PLC controller; the PLC controller is connected with a wireless communicator through a wireless communicator in the station data processing system. The whole detection system of the invention has high portable integration degree, automatic operation process, convenient operation, low specialty technical requirements, rapid operation speed, extremely-time section surface measuring and high measuring precision, and the system precision is less than 3mm.
Owner:上海地铁盾构设备工程有限公司
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