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86 results about "Isosurface" patented technology
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An isosurface is a three-dimensional analog of an isoline. It is a surface that represents points of a constant value (e.g. pressure, temperature, velocity, density) within a volume of space; in other words, it is a level set of a continuous function whose domain is 3D-space.
Automatic analysis in virtual endoscopy
A computer system and a computer-implemented method are provided for interactively displaying a three-dimensional rendering of a structure having a lumen and for indicating regions of abnormal wall structure. A three-dimensional volume of data is formed from a series of two-dimensional images representing at least one physical property associated with the three-dimensional structure. An isosurface of a selected region of interest is created by a computer from the volume of data based on a selected value or values of a physical property representing the selected region of interest. A wireframe model of the isosurface is generated by the computer wherein the wireframe model includes a plurality of vertices. The vertices are then grouped into populations of contiguous vertices having a characteristic indicating abnormal wall structure by the computer. The wireframe model is then rendered by the computer in an interactive three-dimensional display to indicate the populations of abnormal wall structure.
Owner:WAKE FOREST UNIVERSITY
Bi-level iso-surface compression
InactiveUS7847799B2Extreme simplicityIncrease the compression ratioImage codingCharacter and pattern recognitionRemote computerContext based
Methods, structures and systems for encoding and decoding isosurface data. An encoder process takes volume data and an isolevel as input and produces compressed isosurface data as output. The compressed isosurface data produced by an encoder process is composed of an occupancy image record, an optional intersection points record, and an optional normal vectors record. An occupancy image is compressed with a context-based arithmetic encoder. Compressed isosurface data can be stored in a data storage device or transmitted through a communication medium to a remote computer system, where the decoder process is executed. The decoder processes take compressed surface data as input and produce surface data as output. The decoder processes first reconstructs the occupancy image by decoding the occupancy image record. An in-core isosurface decoder process produces a polygon mesh as a surface representation. An out-of-core isosurface decoder process produces a set of oriented points as a surface representation.
Owner:ACTIVISION PUBLISHING
Bi-level iso-surface compression
InactiveUS7230616B2Extreme simplicityIncrease the compression ratioImage codingCharacter and pattern recognitionAlgorithmImage compression
Methods, structures and systems for encoding and decoding isosurface data. An encoder process takes volume data and an isolevel as input and produces compressed isosurface data as output. The compressed isosurface data produced by an encoder process is composed of an occupancy image record, an optional intersection points record, and an optional normal vectors record. An occupancy image is compressed with a context-based arithmetic encoder. Compressed isosurface data can be stored in a data storage device or transmitted through a communication medium to a remote computer system, where the decoder process is executed. The decoder processes take compressed surface data as input and produce surface data as output. The decoder processes first reconstructs the occupancy image by decoding the occupancy image record. An in-core isosurface decoder process produces a polygon mesh as a surface representation. An out-of-core isosurface decoder process produces a set of oriented points as a surface representation.
Owner:ACTIVISION PUBLISHING
Indoor scene 3D reconstruction method based on Kinect
ActiveCN106803267ALess redundancyImprove real-time performanceDetails involving processing stepsImage enhancementPoint cloudRay casting
The invention discloses an indoor scene 3D reconstruction method based on Kinect and solves the technical problem of the real-time reconstruction of an indoor scene 3D model and avoidance of excessive redundant points. The method comprises steps of: obtaining the depth data of an object by using Kinect and de-nosing and down-sampling the depth data; obtaining the point cloud data of a current frame and calculating the vector normal of each point in the frame; using a TSDF algorithm to establish a global data cube, and using a ray casting algorithm to calculate predicted point cloud data; calculating a point cloud registration matrix by using an ICP algorithm and the predicted point cloud data, fusing the obtained point cloud data of each frame into the global data cube, and fusing the point cloud data frame by frame until a good fusion effect is obtained; rendering the point cloud data with an isosurface extraction algorithm and constructing the 3D model of the object. The method improves the registration speed and the registration precision, is fast in fusion speed and few in redundancy points, and can be used for real-time reconstruction of the indoor scene.
Owner:XIDIAN UNIV
Method and apparatus for visualization of 3D voxel data using lit opacity volumes with shading
InactiveUS6940507B2Improve visual qualityFacilitate cognitionCharacter and pattern recognitionSeismic signal processingVoxelVolumetric data
A volume rendering process is disclosed for improving the visual quality of images produced by rendering and displaying volumetric data in voxel format for the display of three-dimensional (3D) data on a two-dimensional (2D) display with shading and opacity to control the realistic display of images rendered from the voxels. The process includes partitioning the plurality of voxels among a plurality of slices with each slice corresponding to a respective region of the volume. Each voxel includes an opacity value adjusted by applying an opacity curve to the value. The opacity value of each voxel in each cell in the volume is converted into a new visual opacity value that is used to calculate a new visual opacity gradient for only one voxel in the center of each cell. The visual opacity gradient is used to calculate the shading, used to modify the color of individual voxels based on the orientation of opacity isosurfaces passing through each voxel in the volume, in order to create a high quality, realistic image.
Owner:SCHLUMBERGER TECH CORP
Model based reconstruction of the heart from sparse samples
A parametric model representing a portion of a heart is constructed using a statistical prior of the shape from a dataset of other instances of the portion. Using a mapping electrode, electrical data is acquired in a plurality of locations in the portion of the heart of a subject. The parametric model is fitted to the electrical data and the statistical prior to produce an isosurface of the portion of the heart and a reconstruction of its shape.
Owner:BIOSENSE WEBSTER (ISRAEL) LTD
Human body organ three-dimensional surface rebuilding method and system
ActiveCN101249019AAccurate reconstructionConforms to smooth continuous propertiesDiagnosticsComputer-aided planning/modellingHuman bodyCell restriction
The invention discloses a method for reconstructing three-dimensional surface of human organs and a system thereof, aiming to solve the problems in the prior cavity surface reconstruction method, including rough reconstruction surface and inability to reconstruct surface of multi-furcate complex organ cavity. The method comprises the following steps of collecting spatial position information of a plurality of points on the surface of an organ; adding one or more restriction points containing spatial position information; constructing and solving a function according to the spatial position information at the sampling point and the restriction points; and performing isosurface extraction of all points with the same functional value of the sampling point to obtain a reconstructed surface of the organ. The inventive method and system can accurately reconstruct the surface model of multi-furcate complex organs, and can obtain smooth surface model, which nearly approaches to the geometry of the original cavity.
Owner:SHANGHAI MICROPORT EP MEDTECH CO LTD
Automatic analysis in virtual endoscopy
A computer system and a computer-implemented method are provided for interactively displaying a three-dimensional rendering of a structure having a lumen and for indicating regions of abnormal wall structure. A three-dimensional volume of data is formed from a series of two-dimensional images representing at least one physical property associated with the three-dimensional structure. An isosurface of a selected region of interest is created by a computer from the volume of data based on a selected value or values of a physical property representing the selected region of interest. A wireframe model of the isosurface is generated by the computer wherein the wireframe model includes a plurality of vertices. The vertices are then grouped into populations of contiguous vertices having a characteristic indicating abnormal wall structure by the computer. The wireframe model is then rendered by the computer in an interactive three-dimensional display to indicate the populations of abnormal wall structure.
Owner:WAKE FOREST UNIV HEALTH SCI INC
Method and system for forming an object proxy
InactiveUS6831642B2Work lessLess polygons and associated vertices3D-image rendering3D modellingComputer scienceComputer program
Owner:RPX CORP +1
Bi-level iso-surface compression
InactiveUS20070206007A1Extreme simplicityIncrease the compression ratioImage codingCharacter and pattern recognitionImage compressionCommunications media
Owner:ACTIVISION PUBLISHING
Method for carrying out human skeleton three-dimensional modeling by utilizing CT image
PendingCN110570515AReduce the workload of interpolation calculationEasy to handleImage enhancementImage analysisVoxelBinary segmentation
The technical scheme of the invention is as follows: the method comprises the following steps: firstly, using medical CT for scanning human skeletons to obtain a DICOM format image map; increasing theresolution of the image sequence along the CT scanning direction by adopting a slice gradient interpolation method, selecting a maximum entropy segmentation method based on the probability distribution of each gray level of the image to determine a threshold parameter, and carrying out binary segmentation processing on the image according to the calculated threshold parameter; obtaining a certainnumber of discrete three-dimensional structure feature points of a two-dimensional plane of a CT scanning skeleton tomographic map, defining tetrahedral voxels of an isosurface by utilizing the distances between the three-dimensional structure feature points, generating a tetrahedral voxel set through a volume fitting method to obtain an accurate topological structure model, and generating a human skeleton three-dimensional model formed by splicing and fitting the tetrahedral voxels.
Owner:TIANJIN POLYTECHNIC UNIV
Ore body modeling method, device and system based on borehole data and storage medium
ActiveCN109326002AImprove efficiencyQuality improvement3D modellingGeological explorationComputer science
The invention discloses an ore body modeling method, device and system based on borehole data and a storage medium. The method comprises the following steps of carrying out the discrete sampling on borehole data sampled by geological exploration to obtain discrete sampling points; extracting the sampling points of a sample section and converting into contact point constraints; extracting the sampling points of a non-sample section and converting into out-of-plane point constraints; constructing a discrete point distance field according to the contact point constraint and the out-of-plane pointconstraint; spatially interpolating the distance field of the discrete points to construct an implicit function distance field which is used to characterize the distribution of the distance field ofthe ore body boundary; sampling the distance field of the implicit function and calculating based on a reference isosurface extraction algorithm to obtain a three-dimensional model of the ore body. The ore body 3D modeling can be carried out directly based on the borehole data, which saves the troubles of manual interpretation of ore body profile and effectively improves the efficiency and qualityof ore body modeling.
Owner:CENT SOUTH UNIV
Method and Apparatus for Determining 3D Shapes of Objects
An apparatus and method determine a 3D shape of an object in a scene. The object is illuminated to cast multiple silhouettes on a diffusing screen coplanar and in close proximity to a mask. A single image acquired of the diffusing screen is partitioned into subview according to the silhouettes. A visual hull of the object is then constructed according to isosurfaces of the binary images to approximate the 3D shape of the object.
Owner:MITSUBISHI ELECTRIC RES LAB INC
Plaque classification method for coronary CT images
ActiveCN108932714AAutomatic classificationImage enhancementImage analysisCoronary ctClassification methods
The invention discloses a plaque classification method for coronary CT images. The method comprises: segmenting a coronary CTA sequence original image to obtain a coronary extraction map; extracting an coronary tree data isosurface, generating grid model data, calculating a normal vector, locating the start and end points from all points on a grid model, calculating the shortest path between the start point and the end point, and equidistantly filtering an obtained curve to obtain a center line and a radius; locating a bright spot in the coronary extraction map; locating a stenosis position and a stenosis section according to the radius and the curve; obtaining a coronary binary image with calcified plaque removed, obtaining the center line of the coronary binary image with calcified plaque removed, and calculating the radius; locating the stenosis position andthe stenosis section according to the radius and the curve, and determining that the plaque is a non-calcified plaque if the stenosis position is the same as the stenosis position in the step S04, otherwise determining that the plaque is a calcified plaque. The method can detect calcified and non-calcified plaques in CTA images and automatically classifies the plaques.
Owner:SUZHOU RAINMED MEDICAL TECH CO LTD
Non-convex hull surfaces
ActiveUS20150120260A1Computation using non-denominational number representationComplex mathematical operationsData setPolygon mesh
The invention is a computer implemented method, device, system, or article for reconstructing a surface of an object. In particular, the invention comprises estimating a non-convex hull signed distance function parameters from a data set of an object and evaluating the non-convex hull signed distance function on vertices of a volumetric mesh. The invention further comprises approximating the zero level set of the non-convex hull signed distance function by a polygonal mesh using an isosurface algorithm to provide surface reconstruction of an object.
Owner:BROWN UNIVERSITY
Three-dimensional modeling method, device and system based on implicit function and storage medium
The embodiment of the invention discloses a three-dimensional modeling method, device and system based on an implicit function and a storage medium. The method comprises the steps of obtaining sampling point information corresponding to a to-be-modeled object collected by collection equipment; constructing spatial interpolation points based on the sampling point information to obtain an implicit function for representing a three-dimensional model geometric domain of the to-be-modeled object; segmenting the three-dimensional model according to the sizes of voxel units divided by grids in a three-dimensional direction to obtain a spatial regular data field; determining a set of seed points, and obtaining a seed voxel set based on the seed voxels corresponding to the seed points in the set ofseed points; extracting a seed voxel serving as an initial search voxel from the seed voxel set, adding the initial search voxel into a growth voxel queue according to a set rule, and traversing thegrowth voxel queue to carry out equivalent surface extraction for determining the boundary of the three-dimensional model; and constructing a three-dimensional model of the to-be-modeled object according to an isosurface extraction result.
Owner:CENT SOUTH UNIV
Scalable method for rapidly detecting potential ground vehicle under cover using visualization of total occlusion footprint in point cloud population
InactiveUS20050063593A1Easy to detectCharacter and pattern recognitionGround vehiclesVisual perception
Methods, computer-readable media, and systems for facilitating detection of an object in a point cloud of three-dimensional imaging data representing an area of study where the object potentially is obscured by intervening obstacles are provided. The imaging data is processed to identify elements in the point cloud having substantially common attributes signifying that the identified elements correspond to a feature in the area of study. An isosurface is generated associating the elements having substantially common attributes. A reversed orientation visualization model for a region of interest is generated. The reversed orientation visual model exposes areas of total occlusion that potentially signify presence of the object.
Owner:THE BOEING CO
Three-dimensional model reconstructing method for keeping fracture line of jaw bone
The invention discloses a three-dimensional model reconstructing method for keeping a fracture line of a jaw bone. The method is characterized by comprising the following steps that 1, CT data, in accordance with a Dicom protocol, of an injured jaw bone are input; 2, a surface model of the jaw bone is extracted by using a Marching Cube isosurface algorithm; 3, a segmentation algorithm which combines a Gaussian mixture model with Graph Cut is used for rapidly completing segmentation of broken bone blocks and a main bone block; 4, automatic replacement is conducted on the broken bone blocks on the basis of the symmetry, and a complete jaw bone model is obtained by splicing the broken bone blocks and the main bone block; 5, positioning devices which are each composed of a pair of coupling block devices are additionally arranged on the seams of the complete model obtained through splicing; 6, a complete three-dimensional solid model is obtained through assembling according to the positioning devices. By means of the three-dimensional model reconstructing method for keeping the fracture line of the jaw bone, in a jaw bone repairing operation, particularly when chimerism, fixation and repair are conducted between the broken bone blocks and between the broken bone blocks and the main bone block, the fracture line information of the defect parts is kept, so that errors in the operation are reduced, the wounds of a patient are reduced, the process of the operation is accelerated, and the operation effect is guaranteed.
Owner:HEFEI UNIV OF TECH
A river course three-dimensional modeling method based on multi-attribute supervoxel and graph cutting
InactiveCN109242968AHelp complement each otherFully portrayedImage analysisCharacter and pattern recognitionAlgorithmLinear relationship
The invention provides a river course three-dimensional modeling method based on multi-attribute supervoxel and graph cutting, belonging to the field of geological body three-dimensional model construction. Aiming at the shortcomings of single seismic attribute describing river course, the invention provides a multi-attribute fusion method based on improved local linear embedding, the preferred attributes are fused into new attributes by ISOLLE algorithm, Considering the non-linear relationship between seismic attribute data, a non-linear fusion method is adopted, the fusion attribute is better than the previous attribute, and the accuracy of river edge and region description is improved, which lays a good foundation for the next segmentation and reconstruction. The invention is based on the river course segmentation method of supervoxel and graph cutting, and generates three-dimensional supervoxel through simple linear iterative algorithm, and the generated supervoxel is well close tothe edge of the river course, and has good homogeneity, and then obtains the final segmentation result by combining the graph cutting frame, and obtains the three-dimensional model of the river course surface in the way of extracting the isosurface.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Vertebra CT image three-dimensional visualization method
InactiveCN108510580AImprove execution efficiencyDoes not affect the drawing effect3D modellingVoxelFinite difference method
The invention discloses a vertebra CT image three-dimensional visualization method and belongs to the medical field. In order to solve the problem that a large quantity of voxels and equivalent pointsare processed in the process of performing three-dimensional reconstruction visualization through a traditional Marching Cubes algorithm, the vertebra CT image three-dimensional visualization methodmakes improvement on the theoretical basis of the traditional Marching Cubes algorithm, wherein when subdivision configuration of triangular patches in the voxels is determined, a golden section method is utilized to calculate intersection points of an isosurface and voxel edges, the triangular patches are fitted into the isosurface, normal vectors of the triangular patches are calculated, a central difference method is adopted to solve gradient values of eight vertexes inside the voxels, and display, rotation, scaling and other interactive operation are completed through a VTK (VisualizationToolkit). In this way, transparent and semi-transparent visual function setting is realized, it is convenient for doctors and researchers to perform observation and analysis from arbitrary angles, andthe method provides a theoretical basis and technical support for observation of vertebra internal and external structure information and treatment and research in a later period.
Owner:HARBIN UNIV OF SCI & TECH
Roll paper slitting and scheduling optimization method and system based on non-linear integer programming
InactiveCN109272145AImprove solution efficiencyImprove work efficiencyForecastingResourcesNonlinear integer programmingRecording duration
Owner:BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
System and method for generating curvature adapted isosurface based on delaunay triangulation
ActiveUS20080129727A1Generate efficientlyOptimize the numberComputation using non-denominational number representationImage data processing detailsComputer graphics (images)Space partitioning
Provided are a system and method for extracting a curvature adapted mesh from a three dimensional implicit function data. The system includes an initial mesh generation module, a curvature geometry module, a space division module, and a final mesh extraction module. The initial mesh generation module generates an initial mesh by receiving implicit function data. The curvature geometry module receives the initial mesh from the initial mesh generation module, calculates a directional curvature of a curved surface, generates a Delaunay vertex set used for Delaunay triangulation, and recalculates an implicit function. The space division module generates Delaunay triangulation information by performing Delaunay triangulation based on the generated Delaunay vertex set from the curvature geometry module, and the final mesh extraction module receives the generated Delaunay triangulation information from the space division module and the three dimensional implicit function data updated at the curvature geometry module, and extracts a final mesh the received three dimensional implicit function data.
Owner:ELECTRONICS & TELECOMM RES INST
Method for quickly obtaining three-dimensional isosurface of radar reflectivity data
ActiveCN109031234AQuick fetchImprove acquisition efficiencyWave based measurement systemsEconomic benefitsRadar reflectivity
The invention provides a method for quickly obtaining a three-dimensional isosurface of a radar reflectivity data, which comprises following steps: normalizing a radar 3D scan data; constructing a hexahedral mesh of radar data points; and calculating the three-dimensional isosurface of the radar reflectivity data. According to the method for quickly obtaining a three-dimensional isosurface of a radar reflectivity data, the data of radar products can be well applied to 3D scenes by quickly obtaining three-dimensional isosurface of radar reflectivity data, which can provide effective decision-making for the reduction and prevention of meteorological disasters, and has good social and economic benefits; meanwhile, the response time of relevant departments to disasters can be shortened throughthe ability to quickly acquire the shape of rainfall clouds.
Owner:NANJING UNIV OF INFORMATION SCI & TECH
Isosurface generation method and visualization system
ActiveUS20200082618A1Effective displayValid conversionImage enhancementImage analysisPattern recognitionVoxel
The present invention relates to a method and system for constructing isosurfaces from 3D data sets, such as 3D image data that are based on a cubic grid (voxel image data). Specifically, 3D image is rendered from a voxel image that can be generated by a variety of medical modalities. The present invention is a modification of the MCA that allows for constructing an isosurface without holes resulting from some cubes having ambiguous isosurface topology. Specifically, to avoid holes resulting from ambiguities, multiple isosurfaces having different resolution levels are generated for ambiguous cubes to resolve the ambiguity.
Owner:CANON USA
Isoline and isosurface drawing and early warning method based on practical measurement and forecasted rainfall quantity
ActiveCN106383373AEasy to understandDisaster Impact ReductionWeather condition predictionEngineeringIsosurface
The invention provides an isoline and isosurface drawing and early warning method based on practical measurement and forecasted rainfall quantity. Meanwhile, the forecasted rainfall isoline and isosurface drawing can be performed by considering the existing practically measured rainfall quantity and the future forecasted rainfall quantity; the forecasted rainfall quantity and the practically measured rainfall quantity are obtained; data of the forecasted rainfall quantity and the practically measured rainfall quantity is processed; the rainfall isoline and isosurface are drawn according to the treated forecasted rainfall quantity; therefore regions to be focally concerned in future can be directly known through the treated forecasted rainfall quantity isoline and isosurface; the emergency preparation time can be greatly brought forward. Further, early warning can be given out in advance on the basis of the comparison of the treated forecasted rainfall quantity with the measured station early warning threshold value, so that relevant responsible persons can take note of the regions possibly generating the dangerous conditions; the dealing measures can be taken in advance.
Owner:SICHUANG TECH CO LTD
Stratum stratification method based on anisotropic interpolation
The invention belongs to the technical field of stratum stratification, and provides a stratum stratification method based on anisotropic interpolation: exploring boreholes, recording stratum lithology names and stratum lithology depth ranges, establishing a cubic network according to the drilled holes during the exploration, and dispersing boreholes into multiple data points along the depth direction; selecting a stratum lithology name, and performing differentiated assignment on discrete data points in the boreholes according to whether the discrete data points in the boreholes fall within the stratum lithology depth range to serve as sample points; further performing anisotropic interpolation in the cubic network according to a specified trend in accordance with attribute values of the sample points to generate an attribute isosurface; and sequentially generating the attribute isosurfaces corresponding to the stratum lithology names according to the above operations, and dividing stratum stratification according to the lithological isosurfaces. In view of the situation that the artificial stratification is difficult or impossible due to more lithological duplication of site lithology and interbedding development and the like in an actual survey process, the stratification results of complex geological conditions can be obtained quickly and accurately by adopting the method.
Owner:深圳市秉睦科技有限公司
Evaluation method for dimension measurement uncertainty based on image isosurface segmentation method
ActiveCN110017797ASimple structureLow costUsing wave/particle radiation meansReference blockIsosurface
The invention relates to a evaluation method for dimension measurement uncertainty based on image isosurface segmentation method, which comprises the following steps: calculating the pixel size by thedistance between the central positions of two cylinders of the reference block and the distance between two circle centers on the cross-section CT image of the reference block; calculating the numberof pixels of the cylinder diameter on the cross-section CT image of the reference block according to the pixel size, and determining a gray segmentation threshold according to the number of pixels; then, establishing an industrial CT size measurement model; respectively calculating the standard uncertainty of the calibration length on the CT image of the reference block, the standard uncertaintyof the length of the part to be detected on the CT image of the detected workpiece and the standard uncertainty introduced by the length calibration error of the reference block; synthesizing standarduncertainty, and finally, calculating the extended uncertainty. The evaluation method for dimension measurement uncertainty based on image isosurface segmentation method has the advantages of low cost, high noise interference resistance and high accuracy, and the evaluation result is more reliable by fully considering the image noise influence and the error source influence.
Owner:CHINA WEAPON SCI ACADEMY NINGBO BRANCH
Point cloud data Poisson curved surface reconstruction method based on noise classification and MLS
ActiveCN108520550AEasy to handleIdeal smoothing effect3D-image renderingPoint cloudNoise classification
The invention discloses a point cloud data Poisson curved surface reconstruction method based on noise classification and MLS, and the method comprises the steps: classifying noise points and introducing the noise points to vector field estimation of a point cloud data isosurface for corresponding smoothing, forming a new sample point, and precisely calculating and correcting a point cloud data normal vector by using moving least squares (MLS), carrying out the surface reconstruction to form a three-dimensional surface with the abundant details, wherein the three-dimensional surface visually approaches to an actual model in a better way. The method effectively achieves the smoothing processing and hole restoration through the more accurate normal information assistance under the conditionthat the original reconstruction precision is not reduced, improves the reconstruction quality of a curved surface, and solves a problem of a non-closed curved surface in the conventional three-dimensional reconstruction technology.
Owner:NANJING UNIV OF INFORMATION SCI & TECH
Preserved context environmental system drawing method based on isosurface
ActiveCN101783025AAvoid ambiguityShorten the time3D-image rendering3D modellingData ingestionData store
The invention provides a preserved context environmental system drawing method based on isosurface, comprising the following steps: (a) storing three-dimensional data as three-dimensional texture data for the gray value index of the three-dimensional data; (b) sampling the three-dimensional data on each ray which enters the three-dimensional data, extracting isosurface coordinate data according to the gray value of a sampling point, and extracting the isosurface coordinate data on the ray; and (c) if the isosurface coordinate data is successfully extracted, continuing sampling subsequent three-dimensional data along the ray direction, and using the isosurface coordinate data and the current sampling point data to carry out image synthesis, or returning to step (b) to continue sampling the three-dimensional data. The method can realize the purpose of clearly displaying a special region of interest and reserving the periphery tissue structure information to obtain the effect similar to sectioning.
Owner:冯前进
Model based reconstruction of the heart from sparse samples
ActiveUS9576107B2Minimize objective functionMedical simulationDiagnostic recording/measuringData setIsosurface
Owner:BIOSENSE WEBSTER (ISRAEL) LTD
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