17 results about "Motion tracking system" patented technology

Methods and systems for performing computer-assisted surgery, including robot-assisted image-guided surgery. Embodiments include marker devices for an image guided surgery system, marker systems and arrays for tracking a robotic arm using a motion tracking system, and image guided surgery methods and systems using optical sensors.

A staging system has to be calibrated to determine a location of a horizontal pivot axis of a target frame. A stage calibration light beam is generated and reflected from a target frame mirror. The target frame is pivoted between first and second positions and the locations of the stage calibration light beam are detected. The locations of the stage calibration light beam provide a value representing an orientation of the target frame mirror relative to the horizontal pivot axis. The orientation of the target frame mirror is then adjusted based on the value so that the target frame mirror is more normal to the horizontal pivot axis.

The utility model provides a kind of semiconductor equipment that can track wafer motion trajectory in real time, including transmission cavity, transfer cavity, process cavity and wafer motion tracking system;Mechanical arm for transmitting wafer is provided in transmission cavity;Transfer cavity and process cavity are connected with the side of transmission cavity;Wafer motion tracking system includes industrial camera, horizontal rotation mechanism for driving industrial camera to rotate in horizontal plane and vertical rotation mechanism for driving industrial camera to rotate in vertical plane;Horizontal rotation mechanism includes horizontal rotation motor, horizontal drive gear, horizontal rotation gear and thrust bearing, horizontal rotation motor is connected with horizontal drive gear, horizontal rotation gear is horizontally arranged on the top cover of transmission cavity with horizontal drive gear and the both interlock, thrust bearing is fixedly connected with horizontal rotation gear;Vertical rotation mechanism is connected with the horizontal rotation gear of the horizontal rotation mechanism and with industrial camera. The present application helps to improve production yield.

A molecular imaging system for imaging of an awake and freely moving small animal includes a cuboid animal cage for one or more small animals and an enclosure for receiving the animal cage. The cuboid animal cage and the enclosure are transparent to the radiation emitted by the animal. At least part of the animal cage is transparent to light. A detector assembly including multiple molecular imaging detectors immediately surrounds the enclosure for detecting radiation emitted by the small animal. The molecular imaging detectors and the enclosure cover at least three sides of the cuboid animal cage in a U-shaped manner. A motion tracking system for optical tracking of position and orientation of the animal with optical detectors synchronizes movement and molecular images. A computation unit processes data registered by the detector assembly and the motion tracking system.

The invention discloses a medical bed motion tracking system and method based on trinocular vision. The system adopts a non-equidistant compact three-camera layout, the left and middle base line is about 30cm, the left and right base lines are about 40cm, and all-angle dead-angle-free medical bed pose capture is realized by matching with medical spherical reflective mark points. Aiming at the shielding problem in a clinical environment, a dual anti-shielding strategy is adopted, trinocular redundancy characteristics are physically utilized, and binocular tracking is automatically switched when a monocular is shielded; a marker ball template is introduced in algorithm to match and repair damaged features. In a stereo matching link, an epipolar line and antipolar line dual verification mechanism is provided for a one-to-many mismatching problem, mismatching is eliminated through bidirectional projection consistency, uniqueness and accuracy of a matched triple are ensured, and high-precision three-dimensional reconstruction and pose tracking are further realized.

A motion tracking system for a robotic exoskeleton includes a computer device configured that is to: control a camera to capture the robotic exoskeleton when the robotic exoskeleton moves to obtain a plurality of images; for each image of the images, detect at least one of the two-dimensional markers in the image, obtain the position information and the appearance information contained in the at least one of the two-dimensional markers, determine an identity of the detected at least one of the two-dimensional markers based on the obtained appearance information, and obtain, based on the obtained position information, corresponding three-dimensional position and three-dimensional orientation; and output, by the computer device, the identity, the three-dimensional position and the three-dimensional orientation of the at least one of the two-dimensional markers as a tracking result of the robotic exoskeleton.

A method and system is for tracking motion of a wind turbine blade. A blade motion tracking system is for installation on a wind turbine blade with a blade root and tip. The system has at least one light module with at least a first light source, preferably adapted to emit light in the blade root direction. An optical measuring device at the blade root may receive light emitted from the first source. The optical measuring device may be a position sensitive detector identifying the first light source position relative to the position sensitive detector. A single light source located at, close to, or towards the tip, is sufficient to measure blade deflection. The first light source is modulated with a predefined frequency such that light from the first light source can be distinguished from ambient light and thereby minimize the influence of the ambient light conditions during detection.

The application discloses an ultrasonic image and pose data synchronous acquisition method and device, equipment, medium and product, relates to the ultrasonic image positioning field, and the device comprises an acquisition system host, a pulse generator, a positioning unit and an ultrasonic machine; the pulse generator simultaneously sends a synchronization pulse signal to the positioning unit and the acquisition system host; the ultrasonic probe acquires ultrasonic images; the positioning unit comprises a sensor and an electromagnetic signal generator; the sensor is arranged on the ultrasonic probe; the electromagnetic signal generator sends electromagnetic waves to the sensor and receives echo signals of the electromagnetic waves; the positioning unit is based on a motion tracking system, and the real-time pose data of the ultrasonic probe in the moving process is positioned according to the echo signals; the acquisition system host records the kernel time stamp of the synchronization pulse signal, synchronously acquires the ultrasonic images output by the ultrasonic probe and the pose signals output by the positioning unit, the application can accurately acquire the pose change in the moving process of the probe, and synchronously acquires the ultrasonic images and the pose signals.

Methods and systems for tracking movement of a person, includes: arranging sensors of a motion tracking system on a person; tracking movement with the sensors at least while the person performs a movement; digitally estimating, with a computing device, a position of the first joint or the sensor on the second body member, wherein the position of the first joint is estimated using measurements of the first sensor and its position is estimated using measurements of the first sensor and the sensor arranged on the second body member. The position is estimated while the movement is tracked. The method further includes digitally computing, an acceleration of the estimated position while movement is tracked; digitally computing a first comparison between the computed acceleration of the estimated position and acceleration measurements of the sensor arranged on the second body member; and digitally determining the movement performed based on the first comparison.

A system for processing video of a sporting activity is disclosed. The system comprises: a plurality of portable electronic devices, each of which comprises at least one camera for capturing video of the sporting activity; and one or more aggregated data processing devices. Each portable electronic device is configured to: generate, using its camera(s), video data representative of the sporting activity; perform processing of the video data to generate video analysis data; and transfer the video analysis data to the aggregated data processing device(s). The aggregated data processing device(s) are configured to perform processing of the video analysis data, so as to generate activity analysis data. Apparatus for holding a portable electronic device is also disclosed, which comprises a housing, within which the portable electronic device can be mounted and enclosed, and an active cooling system for cooling the portable electronic device.

A geofencing system for a surgical handpiece with a cutting surface, including: a motion tracking system configured to track a location of the surgical handpiece; and an event detector configured to: receive a current measurement signal indicating a current usage of the surgical handpiece; receive motion information regarding the surgical handpiece from the motion tracking system; determine if the cutting surface has exited a second surface of a bone opposite a first surface where the cutting surface entered the bone based upon the current measurement signal and the motion information; and stop the surgical handpiece when it is determined that the cutting surface has exited the second surface of the bone.

The invention relates to the technical field of medical information monitoring, in particular to a lung tumor motion trail tracking system in radiotherapy, which comprises a body surface information acquisition unit, an in-vivo information acquisition unit and a dynamic space-time fusion network, and is characterized in that the body surface information acquisition unit is used for acquiring body surface time sequence information of a patient and body surface space motion information of the patient; the in-vivo information acquisition unit is used for acquiring tumor motion information in the body of a patient, and the dynamic space-time fusion network model is used for fusing a body surface time sequence and body surface space motion information of the patient and establishing a mapping relation between the fused information and the tumor motion information in the body of the patient to form a tumor trajectory tracking model; the motion information acquisition module is used for acquiring tumor motion information in the body of the patient according to the body surface time sequence information and the body surface space motion information of the patient which are acquired in real time. The method has the beneficial effects that through accurate dynamic tracking and dose-level real-time feedback, the dose coverage of a tumor target region can be maximized, and meanwhile, the damage to surrounding normal tissues is minimized.

The invention provides a body surface respiratory movement tracking system and method based on a position sensing mark, which are used in the field of radiotherapy, and are characterized in that a visual mark generated based on a visual position sensing coding technology is arranged on clothes worn by a patient; detection and three-dimensional reconstruction of body surface marks are achieved through a binocular vision system to obtain body surface point clouds under respiratory movement, dimension reduction and fusion of body surface feature point clouds are achieved through PCA for the body surface point clouds at different moments, and body surface respiratory signals capable of being used for tumor movement tracking are extracted.

System and methods are provided for body motion tracking. The system includes one or more ultrasound systems configured to be worn by a subject and to acquire ultrasound data during motion of a first location on the subject. The system also includes one or more inertia measurement unit (IMU) systems configured to be worn on a second location on the subject and to measure inertia data associated with motion of the second location and a control system configured to integrate the ultrasound data and the inertia data to generate position data, the position data characterizing a motion of one of the first or second location on the subject.

System and methods are provided for body motion tracking. The system includes one or more ultrasound systems configured to be worn by a subject and to acquire ultrasound data during motion of a first location on the subject. The system also includes one or more inertia measurement unit (IMU) systems configured to be worn on a second location on the subject and to measure inertia data associated with motion of the second location and a control system configured to integrate the ultrasound data and the inertia data to generate position data, the position data characterizing a motion of one of the first or second location on the subject.

Examples described herein relate to computer vision-assisted analysis of motion of a person. An optical device of a motion tracking system captures a calibration image of the person. The calibration image is processed to determine at least two calibration length values based on distances between anatomical landmarks associated with at least one body member. The optical device captures an exercising image of the person while the person performs a predetermined exercise. The exercising image is processed to determine at least two target length values based on distances between the anatomical landmarks associated with the at least one body member. A depth-related parameter associated with a target body member of the person is determined based on the calibration length values and the target length values. The depth-related parameter is used in the motion tracking system to track motion of the person with respect to the predetermined exercise.