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1002results about "Direction/deviation determining electromagnetic systems" patented technology
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Active camera video-based surveillance systems and methods
InactiveUS20050104958A1Quality improvementTelevision system detailsCharacter and pattern recognitionActive cameraImaging data
A video surveillance system comprises a sensing unit capable of being operated in a first mode and second mode and a computer system coupled to the sensing unit. The computer system is adapted to receive and process image data from the sensing unit, to detect and track targets, and to determine whether the sensing unit operates in the first mode or in the second mode based on the detection and tracking of targets.
Owner:OBJECTVIDEO
Single-camera tracking of an object
InactiveUS6973202B2Ultrasonic/sonic/infrasonic diagnosticsImage enhancementOptical trackingVideo camera
Owner:VARIAN MEDICAL SYSTEMS
Automatic tracking lighting equipment, lighting controller and tracking apparatus
Automatic tracking lighting equipment for automatically tracking a target to be illuminated. A spotlight is supported for pivoting in horizontal and vertical directions on a ceiling surface. A horizontal drive mechanism changes the horizontal angle of the spotlight and a vertical drive mechanism changes the vertical angle of the spotlight. A CCD camera picks up the image of a target area to be illuminated. An image recognition unit processes the image from the CCD camera to recognize the target to be illuminated and to specify its coordinates. A coordinate calculation unit calculates how far to move the spotlight based on a distance of the target to be illuminated. A movable control unit converts the output of the coordinate calculation unit into drive signals for the horizontal drive mechanism and for the vertical drive mechanism and outputs drive signals to pivot the spotlight in a desired direction.
Owner:MATSUSHITA ELECTRIC WORKS LTD
System and method for video content analysis-based detection, surveillance and alarm management
A surveillance system and method for the automatic detection of potential alarm situation via a recorded surveillance content analysis and for the management of the detected unattended object situation. The system and method are operative in capturing surveillance content, analyzing the captured content and providing in real time a set of alarm messages to a set of diverse devices. The system provides event based debriefing according to captured objects captured by one or more cameras covering different scenes. The invention is implemented in the context of unattended objects (such as luggage, vehicles or persons), parking or driving in restricted zones, controlling access of persons into restricted zones, preventing loss of objects such as luggage or persons and counting of persons.
Owner:QOGNIFY
Haptic guidance system and method
ActiveCN101160104AUltrasonic/sonic/infrasonic diagnosticsOperating tablesGuidance systemComputerized system
A surgical apparatus includes a surgical device, configured to be manipulated by a user to perform a procedure on a patient, and a computer system. The computer system is programmed to implement control parameters for controlling the surgical device to provide at least one of haptic guidance to the user and a limit on user manipulation of the surgical device, based on a relationship between an anatomy of the patient and at least one of a position, an orientation, a velocity, and an acceleration of a portion of the surgical device, and to adjust the control parameters in response to movement of the anatomy during the procedure.
Owner:MAKO SURGICAL CORP
Vision based real-time object tracking system for robotic gimbal control
ActiveUS10095942B2Improve accuracyImprove reliabilityTelevision system detailsImage analysisVision basedComputer science
Using various embodiments, methods, systems, and apparatuses for controlling a camera pivoting device (e.g., mechanical gimbal) are described. In one embodiment, the system comprises a main computing device, a gimbal stabilizer controller, and a computer vision camera, and / or a user camera. The system is able to track a target object using the computer vision camera even while the target object is moving, the base of the pivoting device is moving (e.g., when a user controlling the camera moves), or a combination of thereof. The camera pivoting device of the embodiments disclosed herein can be mounted on to any number of devices / objects that can provide mobility and / or transportation.
Owner:REFLEX ROBOTICS
Detector for optically detecting at least one object
ActiveUS20140291480A1Improve long-term stabilityOptical rangefindersMaterial analysis by optical meansOptical axisLight beam
A detector (110) for determining a position of at least one object (112) is proposed. The detector (110) comprises:at least one transversal optical sensor (130), the transversal optical sensor (130) being adapted to determine a transversal position of at least one light beam (138) traveling from the object (112) to the detector (110), the transversal position being a position in at least one dimension perpendicular to an optical axis (116) of the detector (110), the transversal optical sensor (130) being adapted to generate at least one transversal sensor signal;at least one longitudinal optical sensor (132), wherein the longitudinal optical sensor (132) has at least one sensor region (136), wherein the longitudinal optical sensor (132) is designed to generate at least one longitudinal sensor signal in a manner dependent on an illumination of the sensor region (136) by the light beam (138), wherein the longitudinal sensor signal, given the same total power of the illumination, is dependent on a beam cross-section of the light beam (138) in the sensor region (136);at least one evaluation device (142), wherein the evaluation device (142) is designed to generate at least one item of information on a transversal position of the object (112) by evaluating the transversal sensor signal and to generate at least one item of information on a longitudinal position of the object (112) by evaluating the longitudinal sensor signal.
Owner:BASF AG
System and method for tracking a subject
An image tracking system for generating digitized image frames of a moving object using an image capture device and a position control device. The image capture device and determining a location value for an object image within each of the digitized image frames. The position control device is coupled to the image capture device to receive the location value of the object image and generates a plurality of control signals which are sent to the position manipulating device. The position control device also uses the plurality of control signals and generates a plurality of rotational movements which position the image capture device, such that the location value of the object image remains within a center region of each of the digitized image frames and such that rotation along different rotation axis occurs independently.
Owner:VERGHESE GILBERT
Arbitrary object tracking augmented reality applications
ActiveUS7050078B2Accurate trackingInput/output for user-computer interactionCathode-ray tube indicatorsGraphicsVideo image
Video images of objects in a real-world environment are taken from the perspective of a viewer. The user's field of view may be captured in the video images that are processed to select a segment of the video image or an object depicted in the video image. An image such as a computer-generated annotation or graphic overlay way be registered to the segment, and therefore track the segment from the user's field of view of the segment, without prior knowledge of the spatial relationship of the segment to the real-world environment according to a centroid for an interframe difference of the video image associated with the selected object. The image may be displayed in the user's field of view or in the video image. The computer-generated image tracks the movement of the segment with respect to the video image.
Owner:ACCENTURE GLOBAL SERVICES LTD
Three-dimensional coordinate measuring device
ActiveUS7372581B2Easy to moveReduce necessityPosition fixationColor television detailsMeasurement deviceAngle of view
An optical camera three-dimensional coordinate measuring system for use with objects to be measured is described. The system may include a compact, easily moveable, and rotatable, target of known dimensions comprising a spherical surface to be placed in contact with the object to be measured at different points along the object to be measured thereby eliminating the necessity of using a larger extended probe contact tip extending from the target to the object to be measured. At least one or more light emitting source may be located in a known position in the target such as the center of the spherical surface for example. At least two cameras located at different and known coordinate locations for receiving light from the light emitting source from different optical perspectives may be included. The position in three dimensional coordinates of the object to be measured is computed from the images taken by the cameras.
Owner:FARO TECH INC
System for determination of a location in three dimensional space
InactiveUS6141104AReduce the impact of interferenceNarrow downInput/output for user-computer interactionPosition fixationThree-dimensional spaceMathematical correlation
An optical improvement for angular position sensors, which may be used to determine the spatial coordinates of a small source of light (or other energy) in a 3-dimensional volume. Such sensors normally include a linear photosensitive image detector such as a photodiode array or a charge-coupled device (CCD). An irregular pattern of parallel slits is described which increases the amount of light gathered while avoiding the undesirable characteristics of lens optics for this application. One optimal type of irregular pattern is the uniformly redundant array. A mathematical correlation function together with a polynomial interpolation function can determine the displacement of the image on the detector and thereby the location of the source relative to one angular dimension. Given the locations and orientations of several sensors in a 3-dimensional coordinate system and given the angles measured by each, the location of the point source can be computed.
Owner:IMAGE GUIDED TECH
Tracking system calibration using object position and orientation
ActiveUS20100302378A1Television system detailsElectromagnetic finder monitoring/testingOptical axisOptical transducers
To calibrate a tracking system, a computing device receives positional data of a tracked object from an optical sensor as the object is pointed approximately toward the optical sensor. The computing device computes a first angle of the object with respect to an optical axis of the optical sensor using the received positional data. The computing device receives inertial data corresponding to the object, wherein a second angle of the object with respect to a plane normal to gravity can be computed from the inertial data. The computing device determines a pitch of the optical sensor using the first angle and the second angle.
Owner:SONY COMPUTER ENTERTAINMENT INC
Method and system for imaging target detection
InactiveUS6072889AImproved target discriminationDirection controllersCharacter and pattern recognitionTerrainComputer vision
A system and method for imaging target detection includes scanning a target area to produce an image of the target area and discriminating a target by identifying image pixels of similar intensity levels, grouping contiguous pixels with similar intensity levels into regions, calculating a set of features for each region and qualifying regions as possible targets in response to the features; discriminating the background by identifying image pixels of similar intensity levels, grouping contiguous pixels of similar intensity levels into regions, calculating a set of features for each background region and qualifying background regions as terrain characteristics in response to the features and analyzing the qualified terrain characteristics and qualified target candidates to determine and prioritize targets.
Owner:RAYTHEON CO
Conferencing system and method for the automatic determination of preset positions corresponding to participants in video-mediated communications
InactiveUS7057636B1Automatically determineTelevision system detailsImage analysisVideo mediated communicationVideo camera
A video conferencing system and method which automatically determines the appropriate preset camera parameters corresponding to participants participating in the video conference. A camera zooms out or pans the video conference space and looks for participants based on their faces. When a participant is detected, the preset camera parameters for that participant are calculated for when the center of the participant is in the center of the camera's view. This is continued for all the participants in the room. The optimal position for each participant and corresponding camera parameters are determined based on cultural preferences. Updates in the presets can be made periodically by the camera zooming out or panning the room. Multiple cameras can be used to continually update the presets.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
Method for simultaneous visual tracking of multiple bodies in a closed structured environment
Simultaneous tracking of multiple objects in a sequence of video frames captured by multiple cameras may be accomplished by extracting a foreground elements from a background in a frame, segmenting objects from the foreground surface, tracking objects within the frame, globally tracking positions of objects over time across multiple frames, fusing track data of objects obtained from multiple cameras to infer object positions, and resolving conflicts to estimate most likely object positions over time. Embodiments of the present invention improve substantially over existing trackers by including a technique for extraction of the region of interest that corresponds to a playing field, a technique for segmenting players from the field under varying illuminations, a template matching criteria that does not rely on specific shapes or color coherency of objects but on connected component properties, and techniques for reasoning about occlusions and consolidating tracking data from multiple cameras.
Owner:UATC LLC
Method and apparatus for adding a graphic indication of a first down to a live video of a football game
InactiveUS6141060AIncrease speedLose accuracyTelevision system detailsColor signal processing circuitsGraphicsExact location
Pan, tilt and zoom sensors are coupled to a broadcast camera in order to determine the field of view of the broadcast camera and to make a rough estimate of a target's location in the broadcast camera's field of view. Pattern recognition techniques can be used to determine the exact location of the target in the broadcast camera's field of view. If a preselected target is at least partially within the field of view of the broadcast camera, all or part of the target's image is enhanced. The enhancements include replacing the target image with a second image, overlaying the target image or highlighting the target image. Examples of a target include a billboard, a portion of a playing field or another location at a live event. The enhancements made to the target's image can be seen by the television viewer but are not visible to persons at the live event.
Owner:SPORTSMEDIA TECH CORP
Method and apparatus for object tracking prior to imminent collision detection
ActiveUS20050131646A1Pedestrian/occupant safety arrangementAnti-collision systemsCollision detectionComputer vision
A method and apparatus for performing collision detection is described. An object is detected within a first operational range of an object tracker. A classification of the object is determined using the object tracker. The object tracker tracks the object. The object is detected within a second operational range of a collision detector. A safety measure is activated based on the classification using the collision detector.
Owner:SRI INTERNATIONAL
Deterent for unmanned aerial systems
ActiveUS20170192089A1Defence devicesDirection/deviation determining electromagnetic systemsNon destructiveAutomated algorithm
A system (100) for providing an integrated multi-sensor detection and countermeasure against commercial unmanned aerial systems / vehicles (44) and includes a detecting element (103, 104, 105), a tracking element (103,104, 105) an identification element (103, 104, 105) and an interdiction element (102). The detecting element detects an unmanned aerial vehicle in flight in the region of, or approaching, a property, place, event or very important person. The tracking element determines the exact location of the unmanned aerial vehicle. The identification / classification element utilizing data from the other elements generates the identification and threat assessment of the UAS. The interdiction element, based on automated algorithms can either direct the unmanned aerial vehicle away from the property, place, event or very important person in a non-destructive manner, or can disable the unmanned aerial vehicle in a destructive manner. The interdiction process may be over ridden by intervention by a System Operator / HiL.
Owner:XIDRONE SYST INC
Motion tracking using image-texture templates
Image templates are extracted from video images in real-time and stored in memory. Templates are selected on the basis of their ability to provide useful positional data and compared with regions of subsequent images to find the position giving the best match. From the position data a transform model is calculated. The transform model tracks the background motion in the current image to accurately determine the motion and attitude of the camera recording the current image. The transform model is confirmed by examining pre-defined image templates. Transform model data and camera sensor data are then used to insert images into the live video broadcast at the desired location in the correct perspective. Stored templates are periodically updated to purge those that no longer give valid or significant positional data. New templates extracted from recent images are used to replace the discarded templates.
Owner:DISNEY ENTERPRISES INC
Detector comprising a transversal optical sensor for detecting a transversal position of a light beam from an object and a longitudinal optical sensor sensing a beam cross-section of the light beam in a sensor region
ActiveUS9389315B2Improve long-term stabilityPhotometry using reference valueOptical rangefindersOptical axisLight beam
Owner:BASF SE
Range adaptable system for determining the angular position and distance of a radiating point source and method of employing
ActiveUS7027634B2Accurate measurementMaterial analysis by optical meansPosition fixationDetector arrayImage scale
A patterned mask is located at a distance from a linear detector array. A point radiating source illuminates the aperture to cast an image onto the array. A computer is employed to identify frequencies in the frequency domain to determine the image scale and shift along the detector array axis. Determination of the magnification of the aperture image is made employing frequency domain techniques, the aperture pattern being re-scaled to match that of the actual image, so that determination of pattern shift can be made. A first embodiment of the present invention has two variations, one of which employs the use of multiple single frequency components and phase methodology, the second of which uses multiple single frequency components as well as a variable frequency component. In a second embodiment, a composite image is also used except that only one single frequency component is used in addition to a non-periodic function.
Owner:NORTHERN DIGITAL
Detector for determining a position of at least one object
ActiveUS9665182B2Reduce measurement errorInput/output for user-computer interactionDirection/deviation determining electromagnetic systemsLight beamBeam cross section
Owner:BASF SE
Photovoltaic system power tracking method
ActiveUS9291696B2Power maximizationImprove system reliabilitySolar heating energyElectric signal transmission systemsSolar lightPower flow
Owner:SOLAREDGE TECH LTD
Collision Avoidance Warning And Taxi Guidance Device
The present invention relates to a collision avoidance warning system for an aircraft (1). The system comprises a light source (8, 9), sensors (10, 11, 12) mounted on the aircraft (1) and processing means for determining the dimensions and location of an object (15) relative to the aircraft (1) so as to determine whether a collision alert is to be given. The present invention is particularly suited to providing collision alert warnings on the ground, such as when the aircraft (1) is taxiing and manoeuvring on runways and in aircraft hangars.
Owner:BUTLER K S +1
Target type estimation in target tracking
InactiveUS6278401B1Easy to integrateEase of evaluationRadio wave direction/deviation determination systemsDirection/deviation determining electromagnetic systemsMultiple hypothesis trackingPattern recognition
The present invention is in general related to target type estimation in target tracking systems. The invention enables a low complexity estimation of target type, using, e.g. ESM sensor data, by the introduction of an ambiguity restoring procedure in certain likelihood calculations. The invention further enables the systematic use of target type probability information in the calculation of strobe track crosses and their associated quality which is particularly useful for deghosting purposes. Methods for utilisation of target type probability information in the processes of strobe tracking, association, track quality evaluation and multiple hypothesis tracking are also disclosed.
Owner:SAAB AB
System for enhancing a video presentation
InactiveUS6252632B1Maximizing intensityImprove abilitiesTelevision system detailsColor signal processing circuitsVideo imageCable television
A system for enhancing the television presentation of an object that can highlight the object without obscuring the image of the object. The system receives a first video image, matches a second video image to a portion of the first video image corresponding to the image of the object. Specific pixels within the portion of the first video image which are not part of the image of the object are modified using a pixel from the second video image.
Owner:FOX SPORTS PRODN
Automatic registration of images in digital terrain elevation data
A method of registering reconnaissance image data with map data is disclosed, comprising recording image data at a plurality of positions, together with the role, pitch and height above mean sea level data from an airborne navigation system and imaging system, and recording altitude of a reconnaissance craft from an altimeter; obtaining a difference between said recorded altitude data, and an altitude calculated from said navigation system data and a map data; selecting a difference data having a lowest standard deviation, and at a position of said selected difference data generating a three dimensional surface data using a bi-quadratic equation; generating a bi-quadratic surface of each of a plurality of positions for which data is recorded; generating a difference data between said bi-quadratic surface data, and height data obtained from said map, and minimising an error between bi-quadratic surface data and said height data by translating said position data relative to said map data, until minimum error is achieved; registering said image data with said map data after applying a said translation of said image data.
Owner:ATLANTIC INERTIAL SYST
System and method for assuring high resolution imaging of distinctive characteristics of a moving object
InactiveUS20050244033A1Less likelihoodSolve the real problemCharacter and pattern recognitionColor television detailsHigh resolution imagingPan tilt zoom
A system and method for assuring a high resolution image of an object, such as the face of a person, passing through a targeted space are provided. Both stationary and active or pan-tilt-zoom cameras are utilized. The at least one stationary camera acts as a trigger point such that when a person passes through a predefined targeted area of the at least one stationary camera, the system is triggered for object imaging and tracking. Upon the occurrence of a triggering event in the system, the system predicts the motion and position of the person. Based on this predicted position of the person, an active camera that is capable of obtaining an image of the predicted position is selected and may be controlled to focus its image capture area on the predicted position of the person. After the active camera control and image capture processes, the system evaluates the quality of the captured face images and reports the result to the security agents and interacts with the user.
Owner:IBM CORP
Object recognizing apparatus for vehicle and the method thereof
A stereoscopic optical system images a stereoscopic picture image, a stereoscopic image processing section calculates a three-dimensional distance distribution from the stereoscopic picture image, and an object recognizing section recognizes objects from the distance distribution information to calculate a relative position of the objects with respect to the vehicle. On the other hand, a travelling amount of the vehicle is detected by a steering sensor and a rear wheel rotation sensor. Then, an object positional information calculating section calcuLates a new relative position of the objects based on the relative position information memorized in a memory section and the calculated travelling amount of the vehicle and the memory section memorizes the new positional information. And, a bumping judgment outputting section judges the possibility of bumping against the objects based on the new relative position of the objects with reference to memorized information about the external shape of the vehicle. If it is judged therein that there is a possibility of bumping, the bumping judgment outputting section outputs a warning signal to an indicating section.
Owner:FUJI JUKOGYO KK
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