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184 results about "Spatial registration" patented technology
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Model-based grayscale registration of medical images
ActiveUS20050013471A1Increase speedImprove reliabilityImage enhancementImage analysisPixel value differenceVisual perception
Numerical image processing of two or more medical images to provide grayscale registration thereof is described, the numerical image processing algorithms being based at least in part on a model of medical image acquisition. The grayscale registered temporal images may then be displayed for visual comparison by a clinician and / or further processed by a computer-aided diagnosis (CAD) system for detection of medical abnormalities therein. A parametric method includes spatially registering two images and performing gray scale registration of the images. A parametric transform model, e.g., analog to analog, digital to digital, analog to digital, or digital to analog model, is selected based on the image acquisition method(s) of the images, i.e., digital or analog / film. Gray scale registration involves generating a joint pixel value histogram from the two images, statistically fitting parameters of the transform model to the joint histogram, generating a lookup table, and using the lookup table to transform and register pixel values of one image to the pixel values of the other image. The models take into account the most relevant image acquisition parameters that influence pixel value differences between images, e.g., tissue compression, incident radiation intensity, exposure time, film and digitizer characteristic curves for analog image, and digital detector response for digital image. The method facilitates temporal comparisons of medical images such as mammograms and / or comparisons of analog with digital images.
Owner:HOLOGIC INC
Gas-mapping 3D imager measurement techniques and method of data processing
ActiveUS20170097274A1Shorten the timeReduced measurement timeMeasurement of fluid loss/gain rateScattering properties measurementsConfidence metricEngineering
Measurement approaches and data analysis methods are disclosed for combining 3D topographic data with spatially-registered gas concentration data to increase the efficiency of gas monitoring and leak detection tasks. Here, the metric for efficiency is defined as reducing the measurement time required to achieve the detection, or non-detection, of a gas leak with a desired confidence level. Methods are presented for localizing and quantifying detected gas leaks. Particular attention is paid to the combination of 3D spatial data with path-integrated gas concentration measurements acquired using remote gas sensing technologies, as this data can be used to determine the path-averaged gas concentration between the sensor and points in the measurement scene. Path-averaged gas concentration data is useful for finding and quantifying localized regions of elevated (or anomalous) gas concentration making it ideal for a variety of applications including: oil and gas pipeline monitoring, facility leak and emissions monitoring, and environmental monitoring.
Owner:BRIDGER PHOTONICS
Omnibearing obstacle detection method based on multi-sensor fusion
ActiveCN111583337AAlleviate sparseness of linesOvercome the disadvantage of low robustnessImage enhancementImage analysisEncoder decoderFeature extraction
The invention relates to an omnibearing obstacle detection method based on multi-sensor fusion. The method comprises the following steps: firstly, collecting images and laser point cloud data in different scenes through a laser radar and a camera; carrying out aerial projection on the laser point cloud data, carrying out feature extraction after two-dimensional gridding segmentation, and obtaininga target candidate box in an aerial view; obtaining an image region candidate box by using a one-stage target detection network model; and then fusing the target area candidate box and the image areacandidate box in the aerial view by using spatial registration; designing a segmentation sub-network of an encoder decoder structure in a three-dimensional space point cloud classification branch toclassify each point cloud to obtain an accurate category of an obstacle target in a three-dimensional space; and the three-dimensional candidate box position regression branch calculating the coordinate deviation and loss value of the predicted target and the marked target of the corresponding category, and outputting the deviated predicted obstacle position information to obtain more accurate position information of the three-dimensional space obstacle.
Owner:SOUTH CHINA UNIV OF TECH
System for remote data geocoding
InactiveUS20080133462A1Without expense and complexity and knowledgeNatural language data processingGeographical information databasesData setGeolocation
A system for accessing geographical data residing in a plurality of disparate data sets and determining spatial relationships between geographic locations specified in the disparate data sets, the system comprising: an accessing component for accessing geographical data residing in a plurality of disparate data sets; a registration component for establishing spatial registration between the geographical data residing in the disparate data sets; and a geospatial analysis engine for determining spatial relationships between geographic locations specified in the disparate data sets.
Owner:FIRST AMERICAN REAL ESTATE SOLUTIONS
Real time brachytherapy spatial registration and visualization system
A method and system for monitoring loading of radiation into an insertion device for use in a radiation therapy treatment to determine whether the treatment will be in agreement with a radiation therapy plan. In a preferred embodiment, optical sensors and radiation sensors are used to monitor loading of radioactive seeds and spacers into a needle as part of a prostate brachytherapy treatment.
Owner:IMPAC MEDICAL SYST
Opposed view and dual head detector apparatus for diagnosis and biopsy with image processing methods
The invention relates generally to biopsy needle guidance which employs an x-ray / gamma image spatial co-registration methodology. A gamma camera is configured to mount on a biopsy needle gun platform to obtain a gamma image. More particular, the spatially co-registered x-ray and physiological images may be employed for needle guidance during biopsy. Moreover, functional images may be obtained from a gamma camera at various angles relative to a target site. Further, the invention also generally relates to a breast lesion localization method using opposed gamma camera images or dual opposed images. This dual head methodology may be used to compare the lesion signal in two opposed detector images and to calculate the Z coordinate (distance from one or both of the detectors) of the lesion.
Owner:HAMPTON UNIVERSITY
Techniques for 3-D Elastic Spatial Registration of Multiple Modes of Measuring a Body
ActiveUS20080265166A1Material analysis using wave/particle radiationRadiation/particle handlingMultiple modesSimilarity measure
Techniques for registration of multiple measurement modes of a body include receiving first and second data from different modes. Each includes measured values with coordinate values. For two mechanically aligned modes, any nonrigid registration is performed. For some modes, the nonrigid registration includes a coarse transformation and multiple fine scale transformations. The coarse transformation maximizes a coarse similarity measure. The second data is subdivided into contiguous subregions. Fine transformations are determined between the subregions and corresponding portions of the first data to maximize a fine similarity measure. Subdividing and determining fine transformations repeats until stop conditions are satisfied. Transformations between the last divided subregions are interpolated. Any of the fine similarity measure, a search region, interpolation method, sub-division location, and the use of rigid or non-rigid fine transformations are adaptive to properties of the first or second data so that the registration is automatic without human intervention.
Owner:THE CLEVELAND CLINIC FOUND +1
Navigation system for intracerebral hemorrhage puncture surgery based on medical image model reconstruction and localization
InactiveCN109223121AEasy to observeEffectively Assist Minimally Invasive Oriented Puncture Operation of Cerebral HemorrhageSurgical needlesSurgical navigation systemsModel reconstructionDisplay device
A navigation system for intracerebral hemorrhage puncture surgery based on medical image model reconstruction and localization is disclosed in the embodiment of the invention, Positioned navigation system for intracerebral hemorrhage puncture surgery, including hosts, AR device and naked-eye 3D display device, The host computer receives the medical CT / MRI data of patients with intracerebral hemorrhage, reconstructs the model of multi-group patients with intracerebral hemorrhage, processes the model butt joint, obtains the three-dimensional virtual model of patients' skull and hematoma, and displays the three-dimensional virtual model on the naked eye 3D display device. The host computer receives the medical CT / MRI data of patients with intracerebral hemorrhage. According to the 3D virtualmodel and the angle depth information, the host computer simulates the operation navigation and connection to import the AR device. AR devices are used for feature point detection, spatial registration between virtual hematoma and real hematoma, real-time catheter tracking, holographic display of virtual hematoma and virtual catheter, voice and somatosensory interaction with physicians. The embodiment of the invention can reduce medical cost and provide human-computer interaction function.
Owner:广州狄卡视觉科技有限公司
Multistage decision fusing and classifying method for hyperspectrum and infrared data
InactiveCN102592134AImprove accuracyImprove stabilityCharacter and pattern recognitionObject ClassAlgorithm
The invention discloses a multistage decision fusing and classifying method for hyperspectrum and infrared data. The multistage decision fusing and classifying method comprises the following steps of: firstly, carrying out noise suppression processing and spatial adjustment on the hyperspectrum and infrared data; secondly, establishing a hyperspectrum and infrared data combined characteristic space according to the characteristics of the hyperspectrum and infrared data; thirdly, monitoring and classifying the combined characteristic space established in the second step to obtain a ground object classification decision according to the ground object categories to be classified and a training sample; fourthly, determining ground object classes required to be subjected to small-object strengthening decision extraction according to the object size and carrying out small-object strengthening decision extraction by using the combined characteristic space established in the second step; fifthly, carrying out end member extraction and abundance estimation on hyperspectrum data subjected to noise suppression in the first step to obtain an abundance decision; and sixthly, designing a fusingrule and fusing the classification decision acquired in the third step, the small-object strengthening decision acquired in the fourth step and the abundance decision acquired in the fifth step to obtain a fusion and classifying result.
Owner:BEIHANG UNIV
Method for interferometer based spectral imaging of moving objects
InactiveUS6088099ARadiation pyrometryInterferometric spectrometryFull spectral imagingSpatial registration
A method for spatial registration and spectral correction for interferometer based spectral imaging which can be used to obtain spectral images of a moving object, the method comprising the steps of (a) using an interferometer based spectral imager for acquiring spatial and spectral information of the moving object; and (b) correcting the spatial and spectral information for movements of the moving object via a spatial registration and spectral correction procedures for obtaining corrected spatial and spectral information.
Owner:APPLIED SPECTRAL IMAGING
Real-time puncture navigation system and navigation method thereof
ActiveCN106063726AImprove convenienceImprove accuracySurgical needlesSurgical navigation systemsUltrasound imagingResonance
The invention discloses a real-time puncture navigation system, which comprises a puncture needle; a host computer to display puncture navigation space of a multimodal image based on the fusion of a magnetic resonance image prior to a surgery and an ultrasonic image during the surgery; an ultrasonic detecting device comprising an ultrasonic probe and an ultrasonic imaging apparatus wherein the ultrasonic probe sends acquired ultrasonic data to the ultrasonic imaging apparatus for processing and outputs the ultrasonic image during the surgery for display and transmission to the host computer; a space registering device comprising a magnetic locator and a calibration body die wherein the magnetic locator receiver is fixedly arranged on the ultrasonic probe through a probe fixture, the calibration body die calibrates the corresponding positions of the magnetic locator receiver and the ultrasonic image plane during the surgery and the magnetic locator receiver acquires the space position of the ultrasonic probe so as to further obtain the space position of the ultrasonic image plane during the surgery; and reality augmented glasses in connection with the host machine and the puncture needle. According to the invention, no special ultrasonic probe and imaging apparatus are needed, making the system not limited to specific puncture parts, and achieving convenient and high puncture navigation.
Owner:SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
Model-based grayscale registration of medical images
ActiveUS7668358B2Enhancing speed and reliabilityEasy to compareImage enhancementImage analysisImaging processingVisual comparison
Numerical image processing based on a model of medical image acquisition of two or more medical images to provide grayscale registration is described. The grayscale registered temporal images may then be displayed for visual comparison and / or further processed by a computer-aided diagnosis system for detection of medical abnormalities therein. A parametric method includes spatially registering two images and performing gray scale registration of the images. A parametric transform model, e.g., analog to analog, digital to digital, analog to digital, or digital to analog model, is selected based on the image acquisition method(s) of the images, i.e., digital or analog / film. Gray scale registration involves generating a joint pixel value histogram from the two images, statistically fitting parameters of the transform model to the joint histogram, generating a lookup table, and using the lookup table to transform and register pixel values of one image to the pixel values of the other image.
Owner:HOLOGIC INC
Techniques for 3-D elastic spatial registration of multiple modes of measuring a body
ActiveUS7948503B2Material analysis using wave/particle radiationRadiation/particle handlingMultiple modesSimilarity measure
Techniques for registration of multiple measurement modes of a body include receiving first and second data from different modes. Each includes measured values with coordinate values. For two mechanically aligned modes, any nonrigid registration is performed. For some modes, the nonrigid registration includes a coarse transformation and multiple fine scale transformations. The coarse transformation maximizes a coarse similarity measure. The second data is subdivided into contiguous subregions. Fine transformations are determined between the subregions and corresponding portions of the first data to maximize a fine similarity measure. Subdividing and determining fine transformations repeats until stop conditions are satisfied. Transformations between the last divided subregions are interpolated. Any of the fine similarity measure, a search region, interpolation method, sub-division location, and the use of rigid or non-rigid fine transformations are adaptive to properties of the first or second data so that the registration is automatic without human intervention.
Owner:THE CLEVELAND CLINIC FOUND +1
Ultrahigh resolution panorama speed dome AIO (All-In-One) system
ActiveCN103501409ASolve the contradictions that cannot be obtained at the same timeFast and precise focus positioningTelevision system detailsImage analysisInformation processingSpatial registration
The invention relates to an image information processing technology, and provides an ultrahigh resolution panorama speed dome AIO (All-In-One) system, a video stitching method and a spatial registration method of the ultrahigh resolution panorama speed dome AIO system. A device comprises an engine base element, a panorama stitching video camera comprising multiple cameras, a speed dome, a controller, a shell and a support. The video stitching method comprises the steps of lookup table calculation, stitching line calculation, image fusion and the like. The spatial registration method comprises the steps of establishing a panorama stitching image coordinate system, uniformly dividing a panorama stitching image into a plurality of rectangular regions, sampling, calculating a mapping relation of sampling points and calculating a non-sampling point mapping relation by adopting a bilinear interpolation method. According to the ultrahigh resolution panorama speed dome AIO system, the video stitching method and the spatial registration method, provided by the invention, not only can panorama monitoring be realized, but also a high-resolution monitoring scene can be provided at the same time, and quick and accurate focus location, zoom out and zoom in and quick and stable browsing of an interested target can be realized through registration linkage between a panorama real-time stitching camera and the speed dome.
Owner:NAT UNIV OF DEFENSE TECH +1
Interventional planning navigation system based on CT-MRI fusion and navigation method thereof
ActiveCN110464459AHelp with positioningHigh precisionImage enhancementImage analysisCt guidanceNavigation system
The invention discloses an interventional planning navigation system based on CT- MRI fusion and a navigation method thereof. The system comprises: a preoperative planning module that segments a prostate region and an urethra from a MRI image, marks a suspicious lesion region, and then constructs a three-dimensional structure, and finally plans an optimal puncture path; a spatial positioning module that is used to complete spatial registration of a CT image and the MRI image of a patient and obtains a transformation matrix from magnetic locator space and a CT image space; a puncture guiding module that is used to obtain a position and a posture of a puncture needle, so as to guide travel of the puncture needle. The interventional planning navigation system of the invention facilitates to locate a suspicious lesion without changing CT guidance by combining imaging advantages of the CT and the MRI, thereby specifying a target area of diagnosis and treatment, and improving accuracy of prostate interventional surgery; and fully combines multimodal medical image information, a spatial positioning technology and a three-dimensional visualization technology to make guidance to operation more intuitive and to improve convenience of prostate interventional surgery.
Owner:LISHUI CENT HOSPITAL +1
Multi-sensor multi-target cooperative detection information fusion method and system
ActiveCN111860589AHuge advantages of coordinated search and rescueLow costCharacter and pattern recognitionRadio wave reradiation/reflectionAlgorithmOriginal data
The invention discloses a multi-sensor multi-target cooperative detection information fusion method.acquiring original data of radar measurement equipment; preprocessing the original data to obtain processed data; performing sensor information registration according to a time registration algorithm and a space registration algorithm, so that all sensors obtain observation information at the same moment and at the same time and space; trace point-track association is carried out according to a target association algorithm and the maneuvering target model to obtain a target track; track-track association is carried out according to a K-means algorithm to obtain an accurate track; and performing fusion processing on the processing data according to a fusion algorithm to obtain an accurate track and real-time motion parameters of the tracking target. The multi-target cooperative detection information fusion scheme provided by the invention has the advantages of flexible configuration, strong universality and good expandability; and real-time data processing is carried out through the airborne data processing unit, so that the task load of a remote control center is reduced, and the timeliness and safety of the scheme are improved.
Owner:SUN YAT SEN UNIV
Method and system for high speed measuring of microscopic targets
InactiveUS7199882B2Overcome limitationsBeam/ray focussing/reflecting arrangementsPhotoelectric discharge tubesDigital dataTriangulation
A system including confocal and triangulation-based scanners or subsystems provides data which is both acquired and processed under the control of a control algorithm to obtain information such as dimensional information about microscopic targets which may be “non-cooperative.” The “non-cooperative” targets are illuminated with a scanning beam of electromagnetic radiation such as laser light incident from a first direction. A confocal detector of the electromagnetic radiation is placed at a first location for receiving reflected radiation which is substantially optically collinear with the incident beam of electromagnetic radiation. The system includes a spatial filter for attenuating background energy. The triangulation-based subsystem also includes a detector of electromagnetic radiation which is placed at a second location which is non-collinear with respect to the incident beam. This detector has a position sensitive axis. Digital data is derived from signals produced by the detectors. In this way, data from at least one triangulation-based channel is acquired in parallel or sequentially with at least one slice of confocal image data having substantially perfect temporal and spatial registration with the triangulation-based sensor data. This allows for fusion or further processing of the data for use with a predetermined measurement algorithm to thereby obtain information about the targets.
Owner:ELECTRO SCI IND INC
Road gradient detection method
The invention relates to a road gradient detection method in the technical field of road design engineering. The road gradient detection method comprises the following steps of: acquiring a contour map and a roading map of a region to be detected; scanning and carrying out space registering to acquire a contour grid scattergram and a roading grid scattergram; digitally processing to acquire a roading vector scattergram and a roading vector scattergram and carrying out irregular triangular network conversion processing to acquire a contour irregular triangular network; extracting all nodes to acquire an elevation scattergraph and carrying out spatial interpolation to acquire an elevation scattergram; extracting and adding road elevation information into the roading vector scattergram and expanding and smoothing an average value to acquire an expanded road elevation scattergram; and extracting the elevation differences and the level distances of grids to acquire the gradient information of each road. The invention has high accuracy, strong practicability, simplicity, easy leaning, short time and avoidance of human factor influence.
Owner:SHANGHAI JIAO TONG UNIV
Time-of-flight triangulation based methods of device spatial registration for multiple-transducer therapeutic ultrasound systems
Embodiments disclosed herein relate to a therapeutic ultrasound device spatial registration method and apparatus. The method enables locating a tissue target and surrounding tissue structures affecting the available acoustic beam paths to the target, relative to each individual therapeutic and diagnostic (e.g., imaging) transducer, in a device comprising a plurality of such transducers. By locating the target and tissue structures relative to each therapeutic transducer and / or array (e.g., in “local” coordinates) assists in transforming the locations relative to any transducers, enabling determination of which therapeutic transducers to use to treat the target, and specification of their respective ultrasound powers or energy, focal locations and beam patterns. The registration method employs a plurality of emitter and receiver acoustic sensors on, respectively, a plurality of imaging and therapeutic transducer device panels.
Owner:OTSUKA MEDICAL DEVICES
Shipborne water bank line overwater and underwater integrated measurement system integrated method
ActiveCN105352476AMeet the requirements of the upper and lower positionsAvoid repeated calibration workProgramme controlComputer controlSystems designData acquisition
The invention provides a shipborne water bank line overwater and underwater integrated measurement system integrated method; integration of hardware of a measurement system is realized through design of a multi-sensor lift platform of an integrated mapping device, and requirements of changing sensor upper and lower positions under different operating conditions of a measurement ship are met. The system designs a data acquisition display control software framework to realize multi-sensor collaborative data acquisition, point cloud real-time display and the like. Through point cloud data preprocessing, data interpolation, spatial registration and other steps, multi-source data are subjected to fusion and resolution, so as to obtain a point cloud product for solving problems of difficult-and-inappropriate-to-reach island topographic measurement and marine unit coastal zone and mud flat topographic survey. The method realizes water bank line overwater and underwater integrated measurement, overcomes limitation of a traditional measurement technology, greatly improves the efficiency of measurement, and provides a bran-new measuring technological means for high-precision three-dimensional measurement problems required by wisdom navigation channels, digital water conservancy, wharfs, bank lines, off-lying sea islands and various engineering construction.
Owner:QINGDAO XIUSHAN MOBILE SURVEYING CO LTD
Image display panel employing a broad-band polarizing/reflective backlighting structure and a pixelated array of reflective-type of filtering elements
InactiveUS6333773B1Avoiding shortcoming and drawbackHigh color imageSolar heating energyTelevision system detailsColor imageSpatial registration
Owner:REVEO
Multiband fusion detection method based on unmanned platform
InactiveCN106096604AInstructions are accurateCharacter and pattern recognitionImaging qualityImage resolution
The invention discloses a multiband fusion detection method based on an unmanned platform. An infrared image sequence and a visible light image sequence obtained on the unmanned platform are subjected to spatial registration, then, the registered infrared image sequence and visible light image sequence can be preprocessed, the preprocessed infrared image sequence and visible light image sequence can be subjected to image fusion, and finally, the fused image sequence is subjected to dim small multi-target detection processing to output the state data and the number information of a target. An infrared and optical image fusion technology is adopted to realize the accurate detection of the target. The defects that the unmanned platform is poor in imaging quality and a single infrared detector is low in resolution and is not favorable for accurately identifying the target are solved. In addition, an algorithm is superior to a traditional target detection algorithm, can more easily detect and identify the target, can provide an accurate target instruction for a defensive system and a confrontation system, and can be widely applied to various types of complex-background accurate detection systems of dim small targets.
Owner:西安电子科技大学昆山创新研究院
CT View Window
A method for verifying a spatial registration of an anatomical region is provided. The method may track a spatial pose of at least one checkpoint defined within the anatomical region, track a spatial pose of a probe tip in proximity to the anatomical region at the checkpoint, map a spatial proximity between the probe tip and the anatomical region onto a visual representation of the anatomical region based on the tracked spatial poses, quantify a deviation between the mapped spatial proximity and an actual spatial proximity in response to a verification request where the verification request is initiated by a user and indicative of the actual spatial proximity between the probe tip and the anatomical region, and generate a graphical index indicative of a degree of accuracy of the spatial registration of the anatomical region based on the quantified deviation.
Owner:MAKO SURGICAL CORP
Method for integration processing of comprehensive track data
InactiveCN105512157AGuaranteed accuracyEnsure consistencySpecial data processing applicationsRelevant informationInformation integration
The invention relates to the field of control center data processing and especially relates to a method for integration processing of comprehensive track data. The method aims to solve the technical problem that the invention discloses a method for the integration processing of the comprehensive track data aiming at problems existing in the prior art, wherein flight tracks output by control center systems are integrated; flight plan tracks are established; relevant information is output according to demands of control centers; and thus comprehensive information integration among the control centers is realized. The method provided by the invention is characterized in that the data of each control center is analyzed and treated by time rectification, space rectification and quality analysis; then normal data, laggard data and abnormal data are processed separately; and thus the comprehensive track data integration is realized.
Owner:THE SECOND RES INST OF CIVIL AVIATION ADMINISTRATION OF CHINA
Material identification using multiple images
ActiveUS20140035943A1Easy to useTexturing/coloringCathode-ray tube indicatorsData setRelative intensity
A computer-implemented method of image processing for materials analysis is provided. At least three image datasets are obtained, these representing intensity values of image pixels and being in common spatial registration. The image datasets are processed so as to assign a comparison measure to each pair of image datasets, the comparison measure for a given pair of image datasets being representative of the difference between the spatial intensity information within the pair. A number of image datasets are then selected using the comparison measures. A colour difference measure is defined which represents the difference between pairs of colours of a colour set. Colours are assigned to the selected image datasets such that pairs of the selected image datasets which have substantially different spatial intensity information are assigned respective colours which have a substantially different colour difference measure. A number of the selected image datasets are then combined together to form an output colour image dataset for the formation of a colour image. The combination is such that each pixel of the colour image takes on a colour according to the relative intensities and colours of the selected image datasets so that if the pixel intensity of one dataset is substantially greater than the sum of the pixel intensities for all the other selected datasets, then the output colour in the respective part of the image will substantially match the colour assigned to that image dataset.
Owner:OXFORD INSTR NANOTECH TOOLS
Star image registration and target track extraction method based on NoC framework and device thereof
ActiveCN105631870AGood secondary developmentFunctionally scalableImage enhancementImage analysisState of artData stream
The application discloses a star image registration and target track extraction method based on an NoC framework and a device thereof. The method comprises the steps of camera calibration, time registration, preprocessing, space registration and movement track extraction. According to the method and the device, functions of high-precision image registration and target precise track extraction of two paths of 1080p sky background videos can be completed simultaneously. The device is compatible with a standard TCP / IP protocol and an HDMI interface protocol, and the system operates under a Linux operating system so that the device has high transportability, and the defects in the prior art that the existing method has difficulty in performing high-precision star image registration and precise track extraction of small space movement targets and the existing platforms based on a CPU framework and the embedded multicore systems composed of a few cores have difficulty in performing real-time complex processing on two paths of 1080p video data streams can be effectively overcome. Meanwhile, the device also has the advantage of low power consumption.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Mark point-free robust neuro-navigation automatic registration method
PendingCN109965979AImprove registration accuracyReduce the numberSurgical navigation systemsCharacter and pattern recognitionPoint cloudImaging processing
The present invention belongs to the technical fields of medical image processing and application, and particularly relates to a mark point-free robust neuro-navigation automatic registration method.The registration method uses extraction and matching based on three-dimensional surface features, after a point cloud obtained by a laser scanner and a point cloud obtained by CT / MRI are used to obtain a coordinate transformation between the two point clouds to achieve the coarse registration, the registration method of iteration of the most adjacent points is used, a result of the coarse registration is then subjected to the registration with the point cloud representing a patient space reconstructed by CT in neuro-navigation to realize the automatic registration of the neuro-navigation. Themethod has better robustness and convenience than a neuro-navigation spatial registration method in the prior art based on surface matching.
Owner:上海复旦数字医疗科技股份有限公司
Global optimization-based neural navigation automatic space registration method
InactiveCN105701788AImprove efficiencySpeed up the solutionImage analysisDiagnosticsImaging processingPoint cloud
The invention belongs to the medical image processing and application field and relates to a global optimization-based neural navigation automatic space registration method. The method includes the following steps that: the point cloud of the whole head surface of a patient is obtained through scanning, and the point cloud is converted into a patient space; normalization processing is performed on the point cloud in the patient space and point cloud in an image space reconstructed by an image device, and the coordinates of the point cloud in the patient space and the point cloud in the image space reconstructed are unified to be within [- 1, 1] <3>; a Go-ICP algorithm-based global optimization spatial registration method is adopted to perform automatic registration on the two point clouds; and the two point clouds are fused, and are unified into the same space. As indicated by clinical practice results, the method of the invention has the advantages of simple implementation, convenient use and reliable precision, and is convenient to apply to clinical application, can be integrated in an existing navigation system and can improve the registration accuracy of the navigation system and reduce registration time.
Owner:FUDAN UNIV
Color mis-registration measurement using an infra-red color density sensor
A xerographic system (8) includes a moving photoreceptor (10) and multiple toner development systems (12, 14) arranged to selectively dispose regions of toner on the moving photoreceptor. A toner density sensor (40) is arranged to measure toner density on the moving photoreceptor over a sensor area (A). A toner coverage monitor (64) operatively connected with the toner density sensor (40) monitors toner coverage based on measurements by the toner density sensor of toner coverage calibration regions disposed on the moving photoreceptor by the multiple toner development systems. A spatial registration monitor (66) also operatively connected with the toner density sensor (40) monitors spatial registration of the multiple toner development systems based on measurements by the toner density sensor of spatial registration calibration regions disposed on the moving photoreceptor by the multiple toner development systems.
Owner:XEROX CORP
Apparatus For Generating Needle Insertion Path For Interventional Robot
InactiveUS20160157887A1Eliminate the problemProgramme-controlled manipulatorSurgical needlesEngineeringNeedle insertion
Disclosed is a apparatus for generating a needle insertion path for an interventional robot, which provides a needle insertion path for intervention by inserting a needle. The apparatus includes a patient-side optical tool located on a patient for showing a position of an intervention target part among parts of the patient, a robot-side optical tool located on an interventional robot for showing a position of the interventional robot, and a needle path calculator configured to track positions of the patient-side optical tool and the robot-side optical tool to perform spatial registration on a local coordinate system of the patient-side optical tool based on the position of the patient-side optical tool with respect to a robot base coordinate system based on the position of the robot-side optical tool, and calculate a needle insertion path with respect to robot base coordinate system, based on a result of the spatial registration.
Owner:CUREXO
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