595 results about "Motion analysis" patented technology

A device comprised of at least a pair of accelerometers and a tilt sensor mounted in fixed relation to a datum plane defining surface (sole of a shoe) may be used for extracting kinematic variables including linear and rotational acceleration, velocity and position. These variables may be resolved into a selected direction thereby permitting both relative and absolute kinematic quantities to be determined. The acceleration is determined using a small cluster of two mutually perpendicular accelerometers mounted on a shoe. Angular orientation of the foot may be determined by double integration of the foot's angular acceleration (which requires a third accelerometer substantially parallel to one of the two orthogonal accelerometers). The two orthogonal accelerations are then resolved into a net horizontal acceleration or other selected direction which may be integrated to find the foot velocity in the selected direction. The average of the foot velocity corresponds to the subject's gait speed.

A system and method for analyzing and improving the performance of an athletic motion such as a golf swing requires: instrumenting a user with inertial sensors and video cameras and monitoring a golf swing or such other athletic motion of interest; drawing upon and contributing to a vast library of performance data for analysis of the test results; the analysis including scoring pre-defined parameters relating to component parts of the motion and combining the parameter scores to yield a single, kinetic index score for the motion; providing a real-time, information rich, graphic display of the results in multiple, synchronized formats including video, color coded and stepped frame animations from motion data, and data/time graphs; and based on the results prescribing a user-specific training regime with exercises selected from a library of standardized exercises using standardized tools and training aids.

There is a need for a technique to compensate for, or eliminate, motion-induced artifacts in patient-attached critical care monitoring instruments. Consequently, the invention is directed to improving pulse-oximetry by incorporating additional signals to aid in the triggering of the pulse-oximeter or in analyzing the data received by the pulse oximeter. This includes detecting when the patient moves and analyzing the pulse-oximetry data in light of the detected movement.

A method and concomitant apparatus for comprehensively representing video information in a manner facilitating indexing of the video information. Specifically, a method according to the inveniton comprises the steps of dividing a continuous video stream into a plurality of video scenes; and at least one of the steps of dividing, using intra-scene motion analysis, at least one of the plurality of scenes into one or more layers; representing, as a mosaic, at least one of the pluraliy of scenes; computing, for at least one layer or scene, one or more content-related appearance attributes; and storing, in a database, the content-related appearance attributes or said mosaic representations.

A method of selecting key-frames (230) from a video sequence (210, 215) by comparing each frame in the video sequence with respect to its preceding and subsequent key-frames for redundancy where the comparison involves region and motion analysis. The video sequence is optionally pre-processed to detect graphic overlay. The key-frame set is optionally post-processed (250) to optimize the resulting set for face or other object recognition.

Video encoding device including a video input processor, for receiving said video signal, a global controller, for controlling the global operation of the video encoding device, a motion estimation processor, a digital signal processor and a bit-stream processor, wherein the global controller stores encodes commands received from a host interface thereby programming the video input processor, the motion estimation processor, the digital signal processor and the bit-stream processor, the video input processor receives and stores the video signal in an external memory unit, the motion estimation processor retrieves the video signal from the memory unit, generates motion analysis of the video signal, stores the motion analysis in the memory unit and provides the motion analysis to the digital signal processor, the digital signal processor processes the video signal according to the motion analysis, thereby producing an encoding commands sequence and encoded data, the bit-stream processor produces an encoded video signal according to the encoding command sequence and the encoded data.

A handheld ultrasound instrument is disclosed having enhanced diagnostic modes including pulse/continuous wave Doppler, time-motion analysis, spectral analysis and tissue harmonic imaging. An external electrocardiograph (ECG) recording unit is also disclosed. The ECG unit is adaptable to be used with the handheld ultrasound instrument to provide for ECG monitoring while performing an ultrasound scan in B-mode, Doppler, color Doppler, M-mode, and CW/PW mode. The enhanced handheld ultrasound instrument further includes a security mechanism allowing any combination of the diagnostic modes to be enabled by the manufacturer, and later to enable or disable any one or group of the diagnostic modes. The invention also discloses a method for a manufacturer to maintain a database of handheld ultrasound instrument capabilities after the instruments enter the stream of commerce.

Detection of an omitted process in an event having of a sequence of processes includes: receiving video of an action area; receiving transaction data regarding a transaction occurring at the action area; detecting at least two different actor motion states in the video; detecting an event based on the motion states; and detecting the omitted process based on the detected event and the transaction data.

A system and method for measuring and analyzing motility within a body lumen such as the gastrointestinal (GI) tract, where an in vivo imaging device such as a capsule captures images and transmits the images to a processor, which calculates the motility of the device based on comparison of the images. Preferably, the processor compares the intensity of pairs of images or of elements of pairs of images, generates a variance for the compared images, and calculates the motility of the imaging device from the variances. The motility data may be presented to a user in various manners; for example, a plot of motility over time may be generated, or indications of low motility may be presented to the user of the system.

A system for automatically capturing an event of interest in a venue is disclosed, comprising a plurality of cameras for capturing video images of the event; and at least one processor communicatively connected to said plurality of cameras and con figured to execute a plurality of modules, said modules comprising a rectification module for combining the video images to form a wide-angle view; at least one of a motion analysis module configured for tracking salient blobs that are not part of a background of the wide-angle view, an activity analysis module configured for extracting temporal and spatial patterns from the wide-angle view, and a shape and appearance module configured for selecting one or more objects in the wide-angle view based on descriptors that are scale and rotational invariant; and a region of interest selector for selecting a viewpoint from the wide-angle view based on output from at least one of the motion analysis module, the activity analysis module, and the shape and appearance module, wherein the region of interest selector outputs the selected viewpoint for display. The system further comprises at least one audio recording device for capturing audio from the event; and means for synchronizing the video images and audio.

A method that integrates sensor data and video analysis to analyze object motion. Motion capture elements generate motion sensor data for objects of interest, and cameras generate video of these objects. Sensor data and video data are synchronized in time and aligned in space on a common coordinate system. Sensor fusion is used to generate motion metrics from the combined and integrated sensor data and video data. Integration of sensor data and video data supports robust detection of events, generation of video highlight reels or epic fail reels augmented with metrics that show interesting activity, and calculation of metrics that exceed the individual capabilities of either sensors or video analysis alone.

The present invention provides a motion analysis system for manufacturing of dental orthotics and prosthetics using computer aided means. The process includes measuring the relative function of one anatomical structure to another based on optical data and in some cases enhanced with other sensor data. The components of hard and soft tissue are used in analysis and where the data can be compared in a time series such that a computer generated occlusal surface from which either a treatment orthosis or prosthesis could be manufactured to aid with dental treatment.

The invention relates to a method and a system for analyzing, teaching and identifying the biomechanics of body motion from a video source. Repeatable body motion activities are analyzed as a series of positions of interest that trigger superimposed smart model animations. The properties of body part images, including location, scale and rotation are determined by a combination of manual and automatic means thereby tailoring the smart models to the underlying video images of the body in motion. Based on the proximity of the subject's actual motion to the ideal-or-expected motion defined for the smart models, quantitative characterizations of the motion performance are made.

A motion analysis device includes two posture angle sensors attached to a measurement object at locations distant from each other, a data acquisition section, a posture angle correction section, and a deformation amount calculation section. The data acquisition section acquires data of a first posture angle and a second posture angle respectively detected by the posture angle sensors. The posture angle correction section corrects a difference between the first posture angle and the second posture angle after starting a motion of the measurement object in accordance with a difference between the first posture angle and the second posture angle before starting the motion of the measurement object. The deformation amount calculation section calculates a deformation amount of the measurement object based on a difference between the first posture angle and the second posture angle corrected by the posture angle correction section.

A system and method for real-time quantitative analysis of heart wall motion is provided. A Doppler imaging system is used to monitor the movement of a heart, or other organ. A B-mode reference image of the target organ is made and then a region-of-interest is defined through the use of a gate. Then pulsed wave spectral tissue Doppler data of the region-of-interest is formed and used to determine the velocity of a region of the target organ. The system may be used for determining appropriate biventricular pacemaker settings for patients suffering from heart disease.

A compact, inexpensive, real-time device for computing dense stereo range and motion field images, which are fundamental measurements supporting a wide range of computer vision systems that interact with the real world, where objects move through three-dimensional space includes a novel algorithm for image-to-image comparison that requires less storage and fewer operations than other algorithms. A combination of standard, low-cost and low-power components are programmed to perform algorithm and performs realtime stereo and motion analysis on passive video images, including image capture, digitization, stereo and/or motion processing, and transmission of results.

The invention discloses a face unlocking method based on motion analysis. The method comprises the steps that image information is collected, if the image information contains face image information, face recognition is conducted on the face image information, and a recognized face image is obtained; if the recognized face image is matched with a preset face image, and prompt information is sent out to prompt a user to make a corresponding face motion according to the prompt information; a face motion image of the user is collected, and the face motion of the user is analyzed; if the face motion of the user is matched with the face motion which is made by the user according to the requirement of the prompt information, a terminal device is unlocked. According to the face unlocking method, users without permissions are prevented from logging in to the terminal device through pictures or videos in a cracking mode, and face unlocking safety is improved. The invention further discloses a face unlocking device and terminal based on motion analysis.

Virtual reality-based adaptive systems and methods are disclosed for improving the delivery of physical therapy and rehabilitation. The invention comprises an interactive software solution for tracking, monitoring and logging user performance wherever sensor capability is present. To provide therapists with the ability to observe and analyze different motion characteristics from the exercises performed by patients, novel visualization techniques are provided for specific solutions. These visualization techniques include color-coded therapist-customized visualization features for motion analysis.

The analysis tool is a system and method for providing athletic training and instruction as it pertains to a golf club swing motion, specially a golf putting stroke motion. The analysis tool provides analysis information to a user from the analysis of at least one video image recording device. The motion of the golf club during the swing or stroke is determined by processing the video image frame data collected by the video image recording device(s). The resulting measurements are displayed by the computer processing environment and presented to the user numerically or pictorially for the purposes of instruction and improvement.