3882 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 distributed data processing system provides a virtual workplace environment. The virtual workplace environment may be a three-dimensional model of an office, a conference room, or an entire office building complex. Participants are represented by three-dimensional avatars, which move within the virtual environment. Participants may also share data within the virtual environment. Two-dimensional data may be projected onto the surface of a three-dimensional object within the environment, such as a wall. Three-dimensional data may be rendered within the environment for the participants to inspect.

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.

Disclosed herein are a system and method for simultaneously reporting changes in location and orientation of an object moving over a planar surface and forming part of a computer input device, interoperably with a conventional mouse where reporting only location is in question. Further the present invention provides improved ways of user interaction with computer displays of two and three dimensional data and structures.

The method of designing and manufacturing the artificial joint stem, comprising steps of performing analysis of the internal stress of the artificial joint stem and bone and the adhesive stress of the artificial stem and bone, using the computer, based on the three dimension data indicating the structure of the bone formed by using plural tomographic images of the bone, the design condition involving the form and stiffness of the artificial joint stem configured by using at least one of the tomographic images and the three dimension data, wherein if the result of the analysis does not satisfy the design condition, the condition is changed to have the computer reanalyze and if the result of the analysis satisfies the design condition, the artificial joint stem is designed and manufactured with the stem data based on the result of analysis and the design condition.

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 present invention provides a method whereby the spatial relationship and orientations of one or more three-dimensional objects being illuminated by an optical projector, and the optical projector itself, can be very accurately defined both quickly and easily. The present invention also provides a novel computerized optical projection system whereby three dimensional data when viewed by the human eye projected onto three dimensional objects is not deformed as a result of the non-planar projection surface. The present invention could have many applications in many industries that include entertainment, apparel, marketing, and many others. In one embodiment, the invention provides computerized optical assembly or manufacturing guidance systems, and related methods, that provide step-by-step assembly or manufacturing instructions for instructing technicians how to assemble or manufacture three-dimensional objects or systems, or parts thereof, which may be extremely complex, such as an aircraft, or a part thereof (a vertical stabilizer, or the like), in a very efficient, rapid and accurate manner. The assembly instructions are in the form of calibrated three-dimensional text, images and / or symbols, and are projected by one or a plurality of optical projectors that are in operable communication with one or a plurality of computers onto the three-dimensional objects or systems, or component parts or skins thereof.

A method and apparatus for presenting three-dimensional data to a physician is provided to facilitate the flexible navigation of an endoscope and surgical instruments with respect to anatomical structures. In accordance with a first embodiment a first set of data corresponding to a three dimensional model of a patient's anatomy is received. This three-dimensional model may be rendered from images taken in CT or MRI scanning, as discussed above In accordance with this embodiment, this model is then combined with a second set of data corresponding to a view obtained from an endoscope. In another embodiment, the view from the illustrative endoscope is displayed as an inset image on the display of the three-dimensional image. In yet another embodiment, the three-dimensional image comprises a graphical representation of at least a first surgical instrument, such as said endoscope. The surgeon may select among various combinations of views and may zoom in or out from any particular view.

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.

Method and apparatus for registering an object of known predetermined geometry to scanned three dimensional data such that the object's location may be verified. Such a known object may comprise a less than ideal three-dimensional (3-D) digital object such as a tooth, a dental appliance (e.g., as a tooth bracket model) or other like object, including portions thereof. Knowledge of such an object's location is generally helpful in planning orthodontic treatment, particularly where the location of the object needs to be determined or confirmed or where incomplete or poor scan data is obtained. Aspects of the present invention provide methods of effectively verifying dental appliance location and displaying appliance locations using a computer and three-dimensional models of teeth.

A system for determining a dimension of an anatomical structure using an appropriate set of 2-D slice images obtained by scanning the anatomical structure, the system comprising: assembling apparatus for assembling the set of scanned 2-D slice images into a 3-D database; extracting apparatus for extracting an anatomical feature from the information contained in the 3-D database; specifying apparatus for specifying a measurement to be ade based on the extracted anatomical feature; and calculating apparatus for calculating the measurement so specified.

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.

Dentition three-dimensional data and jaw-bone three-dimensional data are collected from a patient and they are combined. According to the combined data, dental crown data for making up for data on a lost tooth and occlusion data on a dental crown represented by the dental crown data are created. When an occlusion force according to the occlusion data is exerted on the occlusion face of a dental crown, a mechanical evaluation factor is produced in a jaw bone. The mechanical evaluation factor produced near the place where an artificial tooth root supporting a dental crown is to be implanted is calculated. The implantation place is determined so that the mechanical evaluation factor may be smaller and the mechanical load on the jaw bone from the opposed tooth during mastication may be lighter.

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.

Systems and methods for automatic detection of dental features, such as cusps, ridges, and grooves, are disclosed. In accordance with an exemplary embodiment, a computer-implemented system and method for automatic detection of dental features for an occlusal surface of a patient's tooth comprises receiving three dimensional data for the tooth's occlusal surface, projecting the three dimensional data into a two dimensional plane, forming a height map from the projected three dimensional data, and detecting a set of points from the height map.

The invention discloses a system for assembling a robot based on visual sense and force feedback control. The system comprises an industrial robot, a workpiece contour detection unit, an assembling force detection unit, a clamping unit and a system control host machine, wherein the industrial robot is used for driving the tail end to move according to a control command of the system control host machine; the assembling force detection unit is used for acquiring the contact force between a shaft workpiece and a hole during the assembling process; the clamping unit is used for clamping the shaft workpiece; the workpiece contour detection unit is used for acquiring the measured data of workpiece contour; the system control host machine is used for receiving the position and the force data and positioning the assembled workpiece according to received data so as to generate the control command to be sent to the industrial robot. The invention further discloses a method for assembling the robot based on visual sense and force feedback control. Rapid hole positioning is carried out and the optimal path of assembling is planned according to the three-dimensional data of hole contour and the force feedback data when the axle hole is assembled, and thus high-precision self-assembling of the axle hole is realized.

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.

System and method for automatic construction of orthodontic reference objects, such as the occlusal plane, arch form, and the local occlusal plane for a patient's teeth are disclosed. In accordance with an exemplary embodiment, a computer-implemented system and method for automatic construction of orthodontic reference objects comprises receiving three dimensional data for the teeth, setting an initial direction for a normal of the occlusal plane, determining tips for selected teeth, calculating a plane that matches the determined tip, and determining a new normal for the calculated plane.

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.