1702 results about "Three dimensional data" patented technology

A three-dimensional sense adjusting unit displays three-dimensional images to a user. If a displayed reaches a limit of parallax, the user responds to the three-dimensional sense adjusting unit. According to acquired appropriate parallax information, a parallax control unit generates parallax images to realize the appropriate parallax in the subsequent stereo display. The control of parallaxes is realized by optimally setting camera parameters by going back to three-dimensional data. Functions to realize the appropriate parallax are made into and presented by a library.

A scanning system that acquires three-dimensional images as an incremental series of fitted three-dimensional data sets is improved by testing for successful incremental fits in real time and providing a variety of visual user cues and process modifications depending upon the relationship of newly acquired data to previously acquired data. The system may be used to aid in error-free completion of three-dimensional scans. The methods and systems described herein may also usefully be employed to scan complex surfaces including occluded or obstructed surfaces by maintaining a continuous three-dimensional scan across separated subsections of the surface. In one useful dentistry application, a full three-dimensional surface scan may be obtained for two dental arches in occlusion.

A method for modeling an implant to be applied to a defect of a bone comprises the steps of obtaining a plurality of tomographic image data of the bone based on measurement data by MRI, producing three-dimensional image data of the bone based on the plurality of tomographic image data, and estimating a shape of a missing born that was previously present or should have been present in the defect of the bone to obtain three-dimensional data of the implant. The estimating step comprises the steps of estimating a provisional shape of the implant which has a contour conformable with the shape of a contour of periphery of the side walls of the defect at the distal surface of the bone and has a predetermined thickness; and deleting data of portions of the provisional shape of the implant that overlap the bone from the data of the provisional shape of the implant so that the three-dimensional data of the implant has an outer peripheral shape that is conformable with the shape of the side walls of the defect.

The invention belongs to the navigation field, and provides an electronic map looking down angle display control method and equipment, and the said method comprises: receiving the switch instruction of the electronic map looking down angle, switching the corresponding prospective projection calculation function, and generating the local three dimensional guide navigation image through the location data and three dimensional data of the surrounding equipment, displaying the said three dimensional guide navigation image. It is used in navigation field, provides an electronic map looking down angle display control method and equipment, and the said method goes like this: receiving the switch instruction of the electronic map looking down angle, switching the corresponding prospective projection calculation function, and generating the local three dimensional guide navigation image through the location data and three dimensional data of the surrounding equipment, displaying the said three dimensional guide navigation image. It increases guide navigation effect, meeting the requirement of multi perspective observation of consumers.

A method and apparatus for omni-directional image and 3-dimensional data acquisition with data annotation and dynamic rage extension method is capable of omni-directionally photographing, acquiring 3-dimensional images photographed by cameras having each different exposure amount in connection with the direction of height of an object, extending dynamic range, and generating an geographical information by entering an annotation such as photographing location and time into the photographed images, which can be connected with other geographical information system database. The apparatus includes one or more multi camera module(s) which are stacked and formed multi layers in the direction of height for acquiring 3-dimensional images and extending dynamic range of the 3-dimensional images, wherein each multi camera module includes a plurality of cameras symmetrically arranged with a specific point in a plane.

In accordance with preferred embodiments of the present invention, a method for imaging tissue, for example, includes the steps of mounting the tissue on a computer controlled stage of a microscope, determining volumetric imaging parameters, directing at least two photons into a region of interest, scanning the region of interest across a portion of the tissue, imaging a plurality of layers of the tissue in a plurality of volumes of the tissue in the region of interest, sectioning the portion of the tissue and imaging a second plurality of layers of the tissue in a second plurality of volumes of the tissue in the region of interest, detecting a fluorescence image of the tissue due to said excitation light; and processing three-dimensional data that is collected to create a three-dimensional image of the region of interest.

An object recognition system comprises a memory for storing a plurality of distance ranges with different distance labels associated with respective distance ranges. The controller converts measured distance values into distance labels according to distance ranges to which the distance values belong. The controller groups the sections or windows of a captured image based on assigned distance labels. Detection area or viewing area of the sensors is divided into a plurality of distance ranges according to tolerance of the measured distance such that broader distance range is defined as the distance from the system is larger. The controller scans the windows with distance labels using a template that defines a joining relationship for the windows and assigns each window with a cluster label that is a combination of the distance label and a occurrence indicia, which is the same for the windows that satisfy the joining relationship. The controller unites the windows having the same cluster labels into a cluster, generates three dimensional data of each of said clusters and combines the clusters that are positioned close to each other based on the three dimensional data to form a candidate of a physical object. The system includes a memory for storing three dimensional data of one or more physical objects that were recognized in previous recognition cycle. The controller infers a physical object which would be recognized in the current cycle based on the stored data and a speed of the vehicle relative to the physical object. The controller compares the inferred physical object with said candidate of a physical object to recognize a physical object.

A system for capturing live-action three-dimensional video is disclosed. The system includes pairs of stereo cameras and a LIDAR for generating stereo images and three-dimensional LIDAR data from which three-dimensional data may be derived. A depth-from-stereo algorithm may be used to generate the three-dimensional camera data for the three-dimensional space from the stereo images and may be combined with the three-dimensional LIDAR data taking precedence over the three-dimensional camera data to thereby generate three-dimensional data corresponding to the three-dimensional space.

Systems and methods for interacting effectively with three-dimensional data are provided such that a data acquisition system of an imaging system can be guided appropriately to gather relevant information from the object being imaged. In one embodiment, the imaging system includes the data acquisition system for obtaining a three-dimensional image of the object; and a processor coupled to the data acquisition system. The processor may be configured for receiving a user interface input based on interaction with the three-dimensional image, and for providing multiple parameters to the data acquisition system based on the user interface input. These parameters may be used for further acquisition by the data acquisition system.

A tissue-image creating unit creates a tissue image including depth values by volume rendering from three-dimensional tissue data stored in a three-dimensional data storage unit. A blood-flow data converting unit scatters a blood flow in three-dimensional blood-flow data stored in the three-dimensional data storage unit into particles, and converts the three-dimensional blood-flow data into three-dimensional particle data. A blood-flow image creating unit creates a blood-flow image including depth values from the three-dimensional particle data. A composite-image creating unit then creates a composite image by coordinating the order of rendering particles and tissue based on the depth values of respective pixels included in the tissue image and the depth values of respective particles included in the blood-flow image. A display control unit then controls display of the composite image so as to be displayed in order onto a monitor included in an output unit.

An input device with three-dimensional, six-degrees-of-freedom data input for a computer having a tracker with an array of tracking points defining a first axis and a second axis or plane is described. Light reflected from, or given off from the tracking points, is captured by a camera. From the two-dimensional images captured, three-dimensional data relating to the position and orientation of the input device may be obtained from the relative positions of the tracking points by a provided algorithm and lookup table. The use of one of the tracking points as an on-off indicator of the tracker's orientation towards or away from the camera greatly expands the use of such technology from limited hemispherical tracking to all-round, full-spherical tracking. In the preferred embodiment of the invention, tracking points on the input device which is in the form of a planar “T”-shape wand with a cross piece and a camera allow computer users to input natural swinging movements into a virtual environment for gaming or other three-dimensional applications.

The invention relates to a combined three-dimensional digital imaging method of digital speckle projection and phase measuring profilometry. The method comprises the following steps: (1), a random digital speckle pattern is projected onto an object and acquired through two cameras on left and right sides; (2), a sinusoidal fringe pattern is projected onto the object, and a corresponding sinusoidal fringe pattern is acquired; (3), the folded phase value of a coding fringe pattern is calculated; (4), a series of points (Pr1 to Prn) on the right camera corresponding to a point P1 on the left camera are searched according to the folded phase value; (5), the point Pr on the right camera corresponding to the point P1 is fixed in the position of P1 according to the acquired digital speckle pattern; (6), processes of the step (4) and (5) are performed to all points on the left and right cameras, to find all the corresponding point pairs; (7), the corresponding point pairs are re-established into three-dimensional point cloud data. The method has the advantages that the imaging speed is fast, small calculated amount, accurate result, and the method is suitable for the fields of on-line three-dimensional detection and dynamic three-dimensional data acquisition with higher accuracy and speed requirements.

The surface shape of a three-dimensional object is acquired with an optical sensor. The sensor, which has a projection device and a camera, is configured to generate three-dimensional data from a single exposure, and the sensor is moved relative to the three-dimensional object, or vice versa. A pattern is projected onto the three-dimensional object and a sequence of overlapping images of the projected pattern is recorded with the camera. A sequence of 3D data sets is determined from the recorded images and a registration is effected between subsequently obtained 3D data sets. This enables the sensor to be moved freely about the object, or vice versa, without tracking their relative position, and to determine a surface shape of the three-dimensional object on the fly.

A computer system and method solve the problem of getting a useful three-dimensional representation of an object like the spine using a small amount of data. This is done by gathering three-dimensional data in the form of a set of 2D computer tomography (CT) slices of a patient's bones and a coaxial set of 2D CT scout images, which are digital two-dimensional X-ray images that can be produced by a CT scanner; extracting from each of these three-dimensional data sets a corresponding stack of 2D contours; and constructing a 3D geometric model of the object. The main features of spinal deformation are captured by integrating these two sets of three-dimensional data, and constructing from them a three-dimensional geometric model of the spine. Scouts are usually used to monitor CT scan acquisition. Here, they are also used as an essential source of data.

A method and device for displaying an indication of the quality of the three-dimensional data for a surface of a viewed object are disclosed, wherein overlays are displayed on pixels of an image corresponding to surface points, indicating the predicted accuracy or availability of the three-dimensional coordinates of those surface points.

A face authentication system includes a data input section for obtaining three-dimensional data concerning a face area of a subject at multiple points, and a processor for performing a registration process or a verification process of authentication data of the subject based on the three-dimensional data. The processor has a quality rater for rating a quality of the three-dimensional data with respect to each of the points of the three-dimensional data to generate quality data, and a quality distribution deriving section for deriving a distribution of the quality with respect to the face area, based on the quality data.

An imaging system and methods for resolving elements of interest through and obscuring environment by removing undesired signals from the intervening, obscuring environment is disclosed. A passive hyperspectral imaging sensor is calibrated and integrated into a system having a positioning and attitude detection system and an instrument control and data acquisition system that records data from sensors in a three-dimensional data cube having two spatial dimensions and a spectral dimension. Either an active detection and ranging system or a look-up-table approach or both are used to remove the noise generated by the intervening, obscuring environment from the data relevant to the elements of interest.

A dental article is fabricated from an SMC material using three-dimensional data captured from natural dentition to guide a computer-controlled milling machine. The three-dimensional data may include scans of an original tooth structure and a prepared tooth surface to characterize all surfaces of a dental article, or certain features may be created within a computer-assisted design environment taking account of occlusion, proximal contacts, and the like. In addition the model applied to a computer-controlled milling machine may account for shrinkage of the SMC material during any post-milling curing steps in order to ensure an accurate fit to the prepared tooth surface.

An improved imaging system includes a memory-storage unit, a multiple-dimensional image processor configured to convert information within a multiple-dimensional data set to a two-dimensional representation in a plane orthogonal to an operator-identified view axis, and an image-rendering device configured to display the two-dimensional representation of a volume-of-interest contained within the three-dimensional data set, wherein the two-dimensional representation is responsive to pixel values associated with a faceplate orthogonal to the view axis. A method for viewing information includes identifying a view axis that intersects a multiple-dimensional data set, modifying the multiple-dimensional data set to align the multiple-dimension data set responsive to the view axis, locating a portion of a structure-of-interest along a vector parallel to view axis, associating a set of pixels with a faceplate, and generating a composite view in accordance with the faceplate.

A method for processing three-dimensional data that defines a three-dimensional scene, and determining and displaying lines-of-sight (LOS) and viewsheds on all visible surfaces of the scene, includes: i) assigning at a user-selected location at least one viewpoint in the scene; ii) applying ray tracing from locations in the scene to the viewpoint to determine locations in the scene that are in a line of sight (LOS) and outside the LOS of the viewpoint, thus determining the viewshed relative to the viewpoint; and iii) color-coding every visible surface in the scene. The color coding then differentially indicates the locations in the line of sight (LOS) and outside the LOS of the viewpoint, producing a display of a color-coded viewshed relative to the viewpoint. Additionally ray tracing can be applied from locations above the scene to determine headroom contours for those locations in the scene.

A view image providing device and method are provided. The view image providing device may include a panorama image generation unit to generate a panorama image using a cube map including a margin area by obtaining an omnidirectional image, a mesh information generation unit to generate 3-dimensional (3D) mesh information that uses the panorama image as a texture by obtaining 3D data, and a user data rendering unit to render the panorama image and the mesh information into user data according to a position and direction input by a user.

The invention relates to a structuring method for a three-dimensional visualizing system of an urban synthesis pipeline network. The method comprises the following steps: establishing a central database for the urban synthesis pipeline network; establishing a two-dimensional texture database; setting a spatial data engine; reading and modeling to the central database and the texture database through the spatial data engine to construct overground and underground two-dimensional views and a three-dimensional visualization scene; and establishing a corresponding relation between two and three dimensional data planes and visual planes, wherein the data planes correspond to and the geographic coordinates of the two-dimensional view and the three-dimensional scene of the system, the visual planes correspond to various spacial geographical object models in the three-dimensional scene and map symbols of the two-dimensional view, the purpose of two-dimensional and three-dimensional linkage isachieved, the function which is not easy to realize in the three-dimensional scene or the macroscopic function is realized through the two-dimensional view, the function which cannot be realized in the two-dimensional view or the function which is less real is realized through the three-dimensional scene, so that the purpose of complementing each other is achieved, and the effective management ofthe urban synthesis pipeline network is further realized.

User interaction with a device is sensed using a three-dimensional imaging system. The system preferably includes a library of user profiles and upon acquiring a three-dimensional images of a user can uniquely identify the user, and activate appliances according to user preferences in the user profile. The system can also use data from the acquired image of the user's face to confirm identity of the user, for purposes of creating a robust biometric password. Acquired three dimensional data can measure objects to provide automated, rapid and accurate measurement data, can provide image stabilization data for cameras and the like, and can create virtual three-dimensional avatars that mimic a user's movements and expressions and can participate in virtual world activities. Three-dimensional imaging enables a user to directly manipulate a modeled object in three-dimensional space.

The present invention provides for methods and an apparatus for evaluating objects having three dimensional features. One method involves using both two dimensional data sets to improve the processing of three dimensional data sets. The two dimensional data set can be used to pre-qualify the three dimensional data set, or may be used to locate that data within the three dimensional data set that is characteristic of the three dimensional feature. The invention may include a sensor configured to capture both three dimensional and two dimensional data. The present invention provides for an efficient technique to evaluate three dimensional data. The present invention also solves heretofore unrecognized problems associated with geometric distortion.

The invention discloses a device and a method for structure-reconstruction-based subcutaneous vein three-dimensional visualization, which can acquire three-dimensional space information of a vein and skin. The method comprises the following steps: step 1, performing parameter calibration for three cameras; step 2, utilizing calibrated cameras to perform parameter calibration for the projector; step 3, utilizing structured light method to realize three-dimensional reconstruction of skin surface; step 4, adopting a template matching method to extract a vein central line in near-infrared images; step 5, adopting a pole line matching method to realize three-dimensional reconstruction of the vein central line; step 6, adopting a light projected method accelerated by a GPU (Graphics Processing Unit) to realize three-dimensional visualization of an opisthenar and the vein on a computer display; finally, simulating to obtain a projected image with the projector as a viewpoint according to the three-dimensional data, and projecting the image to the skin surface to be inspected to realize two-dimensional projected display.

Dynamic projection of at least first and second patterns contributes detectable disparity onto a scene that includes a target object. The scene is imaged with two-dimensional cameras whose acquired imagery includes disparity contributions whose presence enable a three-dimensional reconstruction depth map to be rapidly and accurately generated. In one embodiment coherent light is input to a first DOE within whose near range output is disposed a second DOE, whose far range output projects an image. Electronically varying effective optical distance between the two DOEs varies the pattern projected from the second DOE. A processor system and algorithms enable dynamic intelligent selection of projected patterns to more readily discern target object characteristics: shape, size, velocity. Patterns can implement spatio-temporal depth reconstruction, spatio-temporal depth reconstruction, and even single-camera spatio-temporal light coding reconstruction. Target objects may be scanned or may make gestures that are rapidly detected and recognized by the system and method.

A face authentication system includes: a data processing section for performing a predetermined data processing operation; a first data input section for inputting three-dimensional data on a face area of a subject to the data processing section; and a second data input section for inputting two-dimensional image data on the face area of the subject to the data processing section, the two-dimensional image data corresponding to the three-dimensional data to be inputted to the data processing section, wherein the data processing section includes: a quality rating section for rating the quality of the three-dimensional data based on the two-dimensional image data, and generating quality data, and an authentication processing section for executing a registration process or a verification process of authentication data based on the three-dimensional data, if the quality data satisfies a predetermined requirement.

The present invention relates to an error correction encoding method using a three-dimensional Reed-Solomon code. In the error correction encoding method, pieces of input information are arranged in a three-dimensional data block. Three-dimensional error correction encoding is performed with respect to the three-dimensional data block, thereby adding horizontal, vertical and z-axial error correction parity symbols to the three-dimensional data block in horizontal, vertical and z-axial directions, respectively.

A system for controlling the position of an agricultural implement coupled to an agricultural vehicle comprises a control unit connected to a field topography database containing three-dimensional data of the topography of a field, a location signal generation arrangement providing location data of the position of the vehicle and/or the implement in the field, an implement position sensor arranged to sense the position of the implement with respect to the ground and to a positioning arrangement configured to move the implement in response to position control signals from the control unit. The control unit is operable to provide the control signals based upon a combination of actual position data received from the implement position sensor and expected required position change data that are derived from elevation data recalled from the field topography database based upon the location data.

Systems and methods for visualizing multiple volumes of three-dimensional data. A graphics card is used for voxel intermixing, pixel intermixing and image intermixing, which produces a final-combined image of the three-dimensional data in real time.