38 results about "Spatial reference system" patented technology

As data about events and objects become more commonly available, analyzing and understanding of interrelated temporal and spatial information is increasingly a concern for military commanders, intelligence analysts and business analysts. A system and method is provided for creating a multidimensional visual representation of a group of data elements having integrated temporal and spatial properties. The data elements are included in the visual representation as corresponding visual elements, such that the data elements of the group linked by at least one association. The system includes a visualization manager for assembling the group of data elements using the at least one association and for assigning a connection visual element in the visual representation between a first visual element representing a first data element of the group and a second visual element representing a second data element of the group. The system also has a spatial visualization component, such as a sprite, configured for generating a spatial domain of the visual representation to include a reference surface for providing a spatial reference frame having at least two spatial dimensions. The reference surface is for relating the first visual element to a first location of interest in the spatial reference frame and for relating the second visual element to a second location of interest in the spatial reference frame. The system also has a temporal visualization component, such as a sprite, configured for generating a temporal domain of the visual representation operatively coupled to the spatial domain, the temporal domain for providing a common temporal reference frame for the locations of interest. The temporal domain includes a first time track, such as a timeline, coupled to the first location of interest and a second time track coupled to the second location of interest, such that the first visual element is positioned on the first time track and the second visual element is positioned on the second time track. Each of the time tracks configured for visually representing a respective temporal sequence of a plurality of the data elements at each of the locations of interest of the reference surface. In implementation of the method, the connection visual element represents a distributed association in at least one of the domains between the first visual element and the second visual element such that the visual representation is displayed on a user interface for subsequent interaction with user events, including animation of the visual elements to help in the analysis of the data contained in the visual representation.

One or more embodiments of the invention provide a method, apparatus, and article of manufacture for locating a mobile device. An application programming interface (API), executed by a computer, provides a plurality of simplified procedures that allow an application program executed by the computer to locate the mobile device. The application program invokes the simplified procedures of the API. The invoked procedures obtain a location of the mobile device given an identification of the mobile device and a description of a spatial reference system associated with the location. Additionally, the invoked procedures interact with specifics for a mobile positioning server of a carrier of the mobile device and with different methods of identifying the device as required by the carrier.

A system and method for analyzing a plurality of data elements having both temporal and spatial properties, where a first data element and a second data element of the plurality of data elements are linked by at least one association element. The system and method include selecting the first data element from the plurality of data elements and providing at least one search criteria for use in analyzing the properties of the plurality of data elements with respect to at least one property of the first data element. An analysis module is used to apply the at least one search criteria to the properties of the plurality of data elements for identifying the second data element from the plurality of data elements and the corresponding at least one association element. The at least one association element is configured for representing a connection between the first data element and the second data element, such that the connection has a first property common to a property of the first data element and a second property common to a property of the second data element. A visualization module is used to generate a visual representation of the first and second data elements and the association element configured for display on a user interface for subsequent interaction with user events. The visual representation includes a spatial domain including a reference surface for providing a spatial reference frame having at least two spatial dimensions and a temporal domain operatively coupled to the spatial domain for providing a common temporal reference frame for locations of interest in the spatial domain.

The invention discloses an lsd-slam-based real-scene three-dimensional reconstruction method. The method comprises the steps of S1, recording a to-be-modeled scene, and collecting video data that covers the to-be-modeled scene; S2, resolving a key frame gesture from a key frame to obtain the restored images of the three-dimensional information based on the lsd-slam modeling technology, and generating a three-dimensional space point cloud; S3, selecting images for being spliced into a panoramic image out of all the restored images of the three-dimensional information according to the space location relationship, and generating the panoramic image; S4, putting the panoramic image and the three-dimensional space point cloud into the same spatial reference system, and subjecting three-dimensional data to the monomer treatment process. In this way, the key frame can be obtained through acquiring and analyzing video data. After that, the three-dimensional space point cloud and the panoramic image are generated through analyzing the key frame. The three-dimensional reconstruction is achieved based on the three-dimensional space point cloud and the panoramic image. Therefore, the calibration of equipment is not required and the method can be implemented without any hardware equipment. Meanwhile, panoramic data and model data are collected, so that the problems during the existing three-dimensional reconstruction process are solved.

A 3D pointing device utilizing an orientation sensor, capable of accurately transforming rotations and movements of the 3D pointing device into a movement pattern in the display plane of a display device is provided. The 3D pointing device includes the orientation sensor, a rotation sensor, and a computing processor. The orientation sensor generates an orientation output associated with the orientation of the 3D pointing device associated with three coordinate axes of a global reference frame associated with the Earth. The rotation sensor generates a rotation output associated with the rotation of the 3D pointing device associated with three coordinate axes of a spatial reference frame associated with the 3D pointing device itself The computing processor uses the orientation output and the rotation output to generate a transformed output associated with a fixed reference frame associated with the display device above. The transformed output represents a segment of the movement pattern.

A measurement method for thread parameters for a threaded object (3), by means of a measurement device (1) defining a spatial reference system (X, Y, Z) incorporating an optical sensor (5) to retrieve the shape of the threaded object, and defining a spatial reference system (X′, Y′, Z′), the measurement device (1) having a computer to assemble a first matrix that describes the quadratic form representing the threaded object in the spatial reference system (X, Y, Z), thus providing the relationship between the two spatial reference systems. The method comprises the steps of:a) predefining at least one trajectory of the at least one optical sensor (5) on the threaded object, along which measurement points are selected such that the matrix evaluated on these values satisfies the condition that it has maximum rank,b) performing a first scanning operation by the at least one optical sensor (5) along said at least one trajectory and retrieving data of the predefined measurement points,c) feeding these data to the first matrix and calculating an axes transformation matrix relating the first spatial reference system with the second spatial reference system for defining the relative position of the threaded object with respect to the second spatial reference system,d) using the axes transformation matrix to convert all data retrieved from the second spatial reference system to the first spatial reference system.

A method and automated system for assisting in the prognosis of the progress and for assisting in the diagnosis of Alzheimer's disease in patients suffering from mild cognitive impairment (MCI). Also provided is a method for training such a system related to identifying discriminant regions of the brain and using these regions to fine tune the assistance method, based on new known cases.Imaging data (PET or SPECT) is used, representing the cerebral activity in a plurality of spatial zones (voxels). The method then includes a normalization processing of the image data, and analysis of the cerebral activity values read in a selection of voxels forming at least one predetermined discriminant region, defined by its coordinates within a spatial reference system.

Thread parameters for a threaded object are determined. Spatial reference systems (X, Y, Z) and (X′, Y′, Z′) are respectively identified for a position sensor and the threaded object. A transformation matrix describing a quadratic form representing the threaded object in (X, Y, Z) may be determined to relate the reference systems. For example, a sensor trajectory on the threaded object may be determined, along with measurement points on the threaded object. The measurement points may be selected so the matrix, evaluated on these values, has maximum rank. Position data at measurement points in the second reference system may be transformed into the first reference system, yielding first results. After coating the threaded object, position data at the measurement points may be acquired again and transformed into the first reference system, yielding second results. Comparisons between the first and second results may provide thickness of the coating and quality verification.

A drive device for a load (18a) comprises a device for detecting accidental collisions with a motor (14a), a first, respectively a second position sensor (15a, 16a) disposed upstream, respectively downstream of a transmission assembly (12a) providing first and second values of position. A calculation unit (20) makes it possible to calculate an error signal (d) corresponding to the difference of these position values. Ways to discriminate are devised so as to analyze the successive error signals as a function of the path (xR) traversed by the load in a spatial reference frame (xR, d). Filters with rectangular spatial window or with exponential spatial window are particularly adapted for discriminating between errors due to an accidental collision and those due to other causes attributable to normal operation. One thus obtains particularly reliable and sensitive collision detection with a very low detection threshold.

The invention belongs to the technical field of training equipment and generally relates to a system for training and assessment of vestibular function and space orientation in personal rotation and movement. The system consists of a round ring, a support, a seat, a seat protecting device, a pedal A, a support top disc, a transmission rod, a supporting shaft casing, a supporting shaft, a photoelectric transmission control keyboard, a light emitter A, a photovoltaic converter A, a light emitter B, a photovoltaic converter B, a data processor and a display screen and can perform three axial movements including rolling, rotation and pitching, produce constantly-changing linear velocity and angular velocity, cognizing that an object performs axial rotation while enabling a user to conduct the three axial movements, axially separate a space reference system for direction cognition of the user, integrate main physiological organs (vestibule and eyes) with achieved space orientation and psychological activity process (space cognition) of people to be trained, thereby being capable of improving and analyzing the vestibular function and space orientation capability of the people engaged in complicated space activities and facilitating shortening of training course.

An apparatus (1) for checking the attitude of a vehicle (2) comprises: at least one target (3) defining a spatial reference system; a mobile unit (4) equipped with measuring means (10) for measuring the value of parameters representing the geometric characteristics of a wheel (9) of the vehicle (2) and its position relative to the mobile unit (4), and with means (11) for viewing the at least one target (3); a processor (13) connected to the measuring means (10) and to the viewing means (11) for calculating the position and orientation of the wheel (9) relative to the reference system and to obtain characteristic parameter values of the attitude of the vehicle (2); an interface (23) designed to make available in real time to the user driving the mobile unit (4) information relating to the position of the measuring means (10) relative to the wheel (9), the mobile unit (4) being able to be driven manually by one user to position it in proximity of (facing) the wheel (9).

A method and systems for capturing digital intra-oral images, while automatically determining a location of an intra-oral sensor placed within a mouth of a patient, is disclosed. A spatial frame-of-reference is established with respect to teeth within the mouth of the patient. An intra-oral digital imaging sensor is placed within the mouth of the patient adjacent to at least one tooth within the mouth that is to be imaged using the intra-oral sensor. Spatial location information is automatically generated such that the spatial location information defines how the intra-oral sensor is placed with respect to the spatial frame-of-reference. A digital image of the at least one tooth is acquired using the intra-oral sensor and the spatial location information is automatically associated with the acquired digital image. The associated spatial location information may be used to automatically correlate the acquired image to a tooth or teeth within the mouth and / or to automatically orient the acquired image for display.

The invention is suitable for the field of landmark description, and provides a hierarchical spatial location description method and device based on a Voronoi diagram and a landmark. The hierarchical spatial location description method based on the Voronoi diagram and the landmark comprises the steps that the Voronoi diagram of the landmark is generated for the landmark in space; a hierarchical spatial reference framework of the landmark is established; the multiple landmarks are selected to serve as reference objects according to a target object, and the hierarchical spatial location description of the target object is established according to the reference objects. According to the hierarchical spatial location description method and device based on the Voronoi diagram and the landmark, the problem that the spatial location of the target object is not in accordance with the human spatial cognition due to the fact that the spatial location of the target object is described only by adopting a hierarchy reference system can be solved; a hierarchical spatial reference system is established through the Voronoi diagram, and the spatial location description of the target object is automatically generated on the basis of the reference system; the description is in accordance with the hierarchy of the human on the spatial cognition and the habits in different scenes, and therefore the locating efficiency of the target object can be improved.

A drive device for a load (18a) comprises a device for detecting accidental collisions with a motor (14a), a first, respectively a second position sensor (15a, 16a) disposed upstream, respectively downstream of a transmission assembly (12a) providing first and second values of position. A calculation unit (20) makes it possible to calculate an error signal (d) corresponding to the difference of these position values. Ways to discriminate are devised so as to analyze the successive error signals as a function of the path (xR) traversed by the load in a spatial reference frame (xR, d). Filters with rectangular spatial window or with exponential spatial window are particularly adapted for discriminating between errors due to an accidental collision and those due to other causes attributable to normal operation. One thus obtains particularly reliable and sensitive collision detection with a very low detection threshold.

A measurement method for thread parameters for a threaded object (3), by means of a measurement device (1) defining a spatial reference system (X, Y, Z) incorporating an optical sensor (5) to retrieve the shape of the threaded object, and defining a spatial reference system (X′, Y′, Z′), the measurement device (1) having a computer to assemble a first matrix that describes the quadratic form representing the threaded object in the spatial reference system (X, Y, Z), thus providing the relationship between the two spatial reference systems. The method comprises the steps of:a) predefining at least one trajectory of the at least one optical sensor (5) on the threaded object, along which measurement points are selected such that the matrix evaluated on these values satisfies the condition that it has maximum rank,b) performing a first scanning operation by the at least one optical sensor (5) along said at least one trajectory and retrieving data of the predefined measurement points,c) feeding these data to the first matrix and calculating an axes transformation matrix relating the first spatial reference system with the second spatial reference system for defining the relative position of the threaded object with respect to the second spatial reference system,d) using the axes transformation matrix to convert all data retrieved from the second spatial reference system to the first spatial reference system.

Thread parameters for a threaded object are determined. Spatial reference systems (X, Y, Z) and (X′, Y′, Z′) are respectively identified for a position sensor and the threaded object. A transformation matrix describing a quadratic form representing the threaded object in (X, Y, Z) may be determined to relate the reference systems. For example, a sensor trajectory on the threaded object may be determined, along with measurement points on the threaded object. The measurement points may be selected so the matrix, evaluated on these values, has maximum rank. Position data at measurement points in the second reference system may be transformed into the first reference system, yielding first results. After coating the threaded object, position data at the measurement points may be acquired again and transformed into the first reference system, yielding second results. Comparisons between the first and second results may provide thickness of the coating and quality verification.

The invention relates to a method and system for separating cast parts from clusters obtained by means of casting processes. The method comprises placing the cluster (3) in a first working area (z1), obtaining an image of the cluster (3) by means of a first computer vision system (4) and processing it, obtaining the orientation of the cast parts and the coordinates of the cutting points referenced to the spatial reference system (X, Y, Z) of the first computer vision system (4), converting the coordinates of the cutting points and orientation of the parts to the spatial reference system (X', Y', Z') of a first manipulator (2) arranged in a second working area (z2), determining the entering angle for separating each cast part (14) and transmitting the coordinates of the cutting points, orientation and entering angle to the first industrial manipulator (2) to apply the separating tool (8) at the cutting point, with the suitable orientation and with the determined entering angle. The method comprises securing the cluster in the second working area (z2).

A method and system for representing an environment of a first mobile platform. The method includes: capturing features of the environment by discrete time sequences of sensor-data from at least two sensors and respective time markers; determining distances of the first mobile platform to the features of the environment; estimating semantic information of the features of the environment; transforming the semantic information of the features of the environment into a moving spatial reference system, wherein a position of the first mobile platform is at a constant site, using the respective determined distances and respective time markers; creating an input tensor using sequences of the transformed semantic information of the features of the environment, corresponding to the sequences of the sensor data of the at least two sensors; generating an output tensor that represents the environment using a deep neural network at a requested point in time and the input tensor.

A method for transforming track representations associated with a spatial position and movement of objects or features observed in an external environment surrounding a vehicle from a vehicle-centric spatial frame of reference, such as associated with a vehicle body or centerline, into a common vehicle movement spatial frame of reference such as may be associated with a vehicle thrust line or vehicle thrust angle.

The present invention is applicable to the field of landmark description, and provides a hierarchical spatial position description method and device based on Voronoi diagrams and landmarks. The hierarchical spatial position description method based on Voronoi diagrams and landmarks includes: for spatial landmarks, generating The Voronoi diagram of the landmarks; establishing a hierarchical spatial reference frame of the landmarks; selecting a plurality of the landmarks as reference objects according to the target object, and establishing a hierarchical spatial position description of the target object with the reference objects. The invention solves the problem that the spatial position of the target object is described only by a hierarchical reference system, which does not conform to the human's spatial cognition. A hierarchical spatial reference system is established through the Voronoi diagram, and automatically generated based on the reference system. The description of the spatial position of the target object is in line with the hierarchy of human spatial cognition and habits in different scenarios, thereby improving the efficiency of target object positioning.

The invention discloses an lsd-slam-based real-scene three-dimensional reconstruction method. The method comprises the steps of S1, recording a to-be-modeled scene, and collecting video data that covers the to-be-modeled scene; S2, resolving a key frame gesture from a key frame to obtain the restored images of the three-dimensional information based on the lsd-slam modeling technology, and generating a three-dimensional space point cloud; S3, selecting images for being spliced into a panoramic image out of all the restored images of the three-dimensional information according to the space location relationship, and generating the panoramic image; S4, putting the panoramic image and the three-dimensional space point cloud into the same spatial reference system, and subjecting three-dimensional data to the monomer treatment process. In this way, the key frame can be obtained through acquiring and analyzing video data. After that, the three-dimensional space point cloud and the panoramic image are generated through analyzing the key frame. The three-dimensional reconstruction is achieved based on the three-dimensional space point cloud and the panoramic image. Therefore, the calibration of equipment is not required and the method can be implemented without any hardware equipment. Meanwhile, panoramic data and model data are collected, so that the problems during the existing three-dimensional reconstruction process are solved.

The invention belongs to the field of airborne graphic image processing, and relates to an airborne digital map local data increment updating method and device. The method is based on the thought of local updating and a layer coverage mechanism, and a geographic data increment packet is adopted to correspond to a local area of a digital map with grids as units. Both the original geographic data packet and the geographic data incremental packet of the digital map comprise corresponding geographic data index files and geographic data files, and the geographic data files store grid data files andvector data files in layers by taking grids as units, the geographic data index file comprises a grid position and a relative path of the corresponding geographic data file in the storage space, andthe geographic data increment packet is consistent with the original geographic data packet in terms of a spatial reference system, a scale and a layering mode. On the basis of ensuring data consistency, map updating efficiency can be remarkably improved, and operation is easy and convenient.

The invention provides a space planning method and system in a virtual reality environment and an application method, and solves the technical problem that an effective quantification means for resource scarcity is lacked in existing meta universe construction. The method comprises the following steps: sampling spatial information of an objective world to form a coordinate data set; performing distributed storage on the coordinate data set through a consensus storage technology to form a coordinate object set; and combining the coordinate objects in the coordinate object set with the relative measurement scale in the virtual reality environment to form a spatial reference system in the virtual reality environment. A space objective rule of a physical world is introduced into a virtual reality environment. The virtual resources and the physical space are fixedly mapped by using the uniqueness of the physical space to form scarce features of the virtual resources, so that the space in the virtual reality environment has physical attributes in a real sense. And the invention has the characteristics of short development period, low cost, strong association with the real world, and strong practicability and entertainment.