144 results about "Geometric space" patented technology

A three-dimensional graphical user interface includes a graphical display, and a memory storing a geometric space including a plurality of three-dimensional cells. Each cell is linked to at least one other cell through an adjoining surface. A program memory includes instructions for causing the graphical user interface to display an interior view of one of the cells, the view controllable by the user through a walkthrough interface, and display an exterior view of the geometric space, the view controllable by the user through rotation and zoom functions.

Disclosed herein is an apparatus and method for estimating the joint structure of a human body. The apparatus includes a multi-view image acquisition unit for receiving multi-view images acquired by capturing a human body. A human body foreground separation unit extracts a foreground region corresponding to the human body from the acquired multi-view images. A human body shape restoration unit restores voxels indicating geometric space occupation information of the human body using the foreground region corresponding to the human body, thus generating voxel-based three-dimensional (3D) shape information of the human body. A skeleton information extraction unit generates 3D skeleton information from the generated voxel-based 3D shape information of the human body. A skeletal structure estimation unit estimates positions of respective joints from a skeletal structure of the human body using both the generated 3D skeleton information and anthropometric information.

An apparatus for filtering a liquid, with a housing, a liquid inlet arranged in the housing, a liquid outlet arranged in the housing, a filter for removing particles from a liquid stream arranged between the liquid inlet and the liquid outlet, and at least one additive for functionally altering the liquid properties arranged in the apparatus, in which the additive is arranged in the interior volume of the apparatus and is shaped in a colloidally disperse, dimensionally stable, elastic form corresponding to at least one geometric space defined by an interior structure of the apparatus or of the filter for removing the particles.

The invention uses pair-wise relations such as dissimilarity, similarity or correlation to identify related items by translating the relations into a set of points in a geometric space, where each point in the set of points represents an item, and where the distance between any two points directly corresponds to the dissimilarity value of the two items represented by the two points. A family of graphs is computed from the Voronoï diagram for the set of points. This family of graphs may be used for a variety of applications, including recommendation systems. For some applications, clustering may be used to assist in visualizing and identifying relations among items. In the case of recommendation systems, graphs reflecting customer preferences are clustered to identify customers with similar tastes.

The invention discloses a method and a system for monitoring paving thickness of a high-level highway pavement in real time, belonging to the field of road construction quality control. The method comprises the following steps: erecting an automatic tracking total station nearby a paving site, determining the position of an erection point through a resection survey method according to the known point coordinate, positioning and tracking a 360-degree prism according to enough short time interval by utilizing the automatic tracking total station, measuring the inclination angles of a transverse beam and a longitudinal beam of a platform trolley in the device by adopting an inclinometer, and measuring the distance from the transverse beam to the paved pavement by adopting a laser distance measuring sensor arranged on the transverse beam; calculating three-dimensional coordinates (x, y, z) of the position points of the paved pavement measured by each laser distance measuring sensor according to a spatial geometrical relation between each laser distance measuring sensor and the prism; projecting to obtain elevation z0 of the position point on a datum plane before paving; solving the difference between elevations z and elevation z0 to obtain the paving thickness; and judging whether the paving thickness at the position point accords with the control standard, otherwise, transmitting alarm information. The method is mainly applied to road construction quality control.

A system for estimating parking occupancy includes a vehicle-detection device including an adjustable mast supporting an image capture device at a select height. The image capture device acquires video of a current parking area. A computer processor in communication with the image capture device is configured to receive the video data and define a region of interest in the video data. The processor is further configured to perform a spatial transform on the ROI to transform the ROI to a normalized geometric space. The processor is further configured to apply features of a detected object in the normalized geometric space to a vehicle classifier—previously trained with samples acquired from a normalized camera perspective similar to the normalized geometric space—and determine the occupancy of the current parking area using an output of the classifier.

A method and apparatus is disclosed herein for scalable routing with greedy embedding. In one embodiment, the method comprises storing log(n) coordinates in a routing table, where n is the number of nodes in a network, and further wherein the log(n) coordinates are generated by constructing a greedy embedding that embeds a graph topology depicting connections between n nodes of a network into a geometric space so as to use greedy forwarding by generating a spanning tree out of a connection graph representing the connections between the n nodes of the network, decomposing the tree into at most n branches, assigning a set of geometric coordinates to vertices in the tree in an n-dimensional space, and projecting the set of geometric coordinates onto a k-dimensional space, where k is less than n, to create the log(n) coordinates; and routing packets via nodes of the network using the log(n) coordinates in the routing table.

The invention discloses a nearly copied image detection method based on multi-target matching. The nearly copied image detection method comprises the following steps that step1, image preprocessing is performed, wherein local characteristic regions and characteristic vectors of all the characteristic regions are extracted from images selected from to-be-queried images and an image set respectively, and initial matching pair sets are screened according to the characteristic vectors of the characteristic regions; step2, characteristic geometric transformation space is established, similarity transformation matrixes corresponding to the initial matching pair sets are solved, wherein the characteristic geometric transformation space is obtained by just combining all the similarity transformation matrixes; step3, clustering is performed, wherein a nonlinear mean shift algorithm suitable for geometric space is used for gathering multiple independently distributed clusters in the characteristic geometric transformation space; step4, similarity magnitude is calculated, wherein the similarity magnitude of the images is defined according to the number of points in all the independently distributed clusters; step5, results are presented, the step1 to the step 4 are repeated, and after the steps are performed on the image data in the image set, result sets are detected according to similarity sequencing images.

Provided is an intersection passage control method achieving left turning through exit lanes. For an intersection controlled by signals, on the basis of the traditional intersection geometric space design and the signal control design, space and time resources of the intersection are further optimized, all or part of the exist lanes are used as left turning lanes at a certain stage of the signal cycle, and additional right of way is provided for left turning traffic. The intersection passage control method particularly comprises the two steps of intersection space arrangement and signal control, wherein the space arrangement step comprises arrangement of a comprehensive functional area and a central lane separator opening, and setting of a pre-signal and a parking line; the signal control step comprises intersection main signal phase and phase sequence setting, intersection main signal timing setting and pre-signal timing setting. The method can provide the additional right of way for the left turning traffic, thereby improving the passage capacity of the intersection, reducing car average delay and solving or relieving traffic jam.

The invention discloses an encoding method, a decoding method and a system of a two-dimensional code. The encoding method comprises the following steps of obtaining data information; processing the data information to obtain the byte type to-be-encoded information; carrying out first compression on the to-be-encoded information to obtain the first compressed data; according to the first compressed data, determining the information of the to-be-encoded data during second compression; according to the information of the to-be-encoded data, carrying out second compression on the first compressed data through an LDPC (low density parity check) code to obtain the second compressed data; according to the length of the second compressed data, the length of flag position and the length of the current version information, calculating the size of the to-be-generated two-dimensional code; and according to the size, the second compressed data, the flag information and the current version information, generating a two-dimensional image. The method or the system has the advantages that the capacity of information carried by the two-dimensional code is higher, and more information can be expressed in a limited geometric space.

The invention provides a space-time proximity search-based mobile trace sequence mode quick mining method. The method comprises the following steps of based on data preprocessing of spatial transformation, at first, performing time and space division on the primary mobile trace data, obtaining a corresponding time space sequence on the basis that the mobile trace data is matched with a time space, building a directed un-weighted digraph corresponding to a two-dimensional geometric space in a time space space, and obtaining a corresponding time space sequence set on the basis that a top point of the un-weighted digraph is matched with the time space sequence; mining a mobile trace sequence mode on the basis of depth-first traversal, in a depth-first traversal process, performing mode increasing in a space-time proximity search-based way, and calculating mobile trace sequence mode support degree by using relational operation of the time space sequence set of the top point. Compared with the prior art, the method has the advantages of high mining speed and high efficiency.

Methods and systems for event pattern mining are shown that include representing longitudinal event data in a measurable geometric space as a temporal event matrix representation (TEMR) using spatial temporal shapes, wherein event data is organized into hierarchical categories of event type and performing temporal event pattern mining with a processor by locating visual event patterns among the spatial temporal shapes of said TEMR using a constraint sparse coding framework.

The invention discloses a structured light system calibration method and device, a structured light system and a mobile device. The structured light system calibration method includes acquiring a calibration board image and a projection images of a calibration board after being projected by a projection module, wherein the projection pattern of the projection module is formed based on a binary geometric space coding pattern; performing calibration on a structured light system including a camera and the projection module by utilizing the calibration board image and the projection image. The invention can improve the calibration precision of the structured light system. The camera is an infrared camera, the projection module is a projection grating module and the structured light system is agrating structured light system. The structured light system which is high in reliability, small in size and low in cost can be provided for the mobile device, so that high-precision three-dimensional scanning of the mobile device is realized.

Various types of systems or technologies can be used to collect data in a 3D space. For example, LiDAR (light detection and ranging) and RADAR (radio detection and ranging) systems are commonly used to generate point cloud data for 3D space around vehicles, for such functions as localization, mapping, and tracking. This disclosure provides improvements for processing the point cloud data that has been collected. The processing improvements include using a three dimensional polar depth map to assist in performing nearest neighbor analysis on point cloud data for object detection, trajectory detection, freespace detection, obstacle detection, landmark detection, and providing other geometric space parameters.

The invention relates to a structure-constrained two-dimensional gravity gradient and magnetotelluric joint inversion method. The method includes the steps of establishing a multi-component gravity gradient and magnetotelluric joint inversion objective function, calculating forward responses and Jacobian matrixes of a gravity gradient method and a magnetotelluric method, and obtaining a fitting difference value between forward response values and observed data. The multi-component gravity gradient method is introduced into joint inversion to replace a conventional gravity exploration method. The magnetotelluric method provides abundant frequency information and large exploration depth. The introduction of the method into the joint inversion effectively overcomes defects of poor gravity gradient and poor gravity vertical resolution and better enables a density inversion model to be recovered. The method of the invention is a joint inversion method based on cross gradient structure coupling. Compared with single inversion and other conventional physical coupling inversion methods, the method of the invention does not depend on rock physical relationships and can better recover a realmodel structure, whether in physical property numerical value or in geometric space shape.

The invention discloses a large-scale building fire source identification and positioning method and a system. The method comprises the following steps: firstly, double determining whether a fire flame exists in a large interior space image captured by the binocular camera using a RGB and HIS dual color space prior threshold constraint and an average gray value and a standard deviation of a spectrogram, and if exists, a contour-based hole filling algorithm is used to fill the large-scale building interior space image with primary segmentation and thresholding; then extracting feature points ofthe filled image using an optimized SURF algorithm, and carrying out optimum matching for feature points of the two filled images using a feature-based matching algorithm; finally, determining three-dimensional space coordinates of the optimized matching points based on an affine geometric space model. Therefore, the method and the system provided by the invention utilize a computer binocular stereo vision technology to timely identify and accurately locate the fire source of the large space building and improve the fire extinguishing efficiency.

The invention provides a low-orbit microsatellite formation system suitable for medium / high-latitude region coverage. According to the low-orbit microsatellite formation system, a surface projection principle is designed based on Flower constellation, all satellites constitute a compact geometric space configuration at the initial moment of a regression period, and the topological structure is ensured to have a periodical repeat property relative to all points on the ground; highly elliptical orbits which are completely the same in shape are adopted for all the satellites in the formation; and a plurality of permanent inter-satellite links are established under the condition of guaranteeing no link overlap inside the formation. According to the low-orbit microsatellite formation system provided by the invention, the complexity of a ground tracking control system can be reduced greatly, the optimization of inter-satellite links and the increase of communication reliability are facilitated, a favorable ground multi-coverage characteristic of medium / high-latitude regions is guaranteed, and the low-orbit microsatellite formation system has wide application values and development prospects in the field of space communication.

The invention relates to a distributed temperature testing system and method for a hot dry rock deep well. The system comprises a distributed optical fiber temperature collection device, a logging winch, a well descending device and a temperature measuring optical cable, wherein the distributed optical fiber temperature collection device is used for completing collection of temperature along the temperature measuring optical cable and data processing; the logging winch is used for containing and transporting the temperature measuring optical cable and further used for providing a power source for fixed-depth and uniform-speed descending and winding of the temperature measuring optical cable; the well descending device is used for mechanical fixation and guidance for descending and winding of the temperature measuring optical cable; and the temperature measuring optical cable serves as a temperature sensing element and a data transmission channel. The system and the method achieve distributed temperature measurement of the hot dry rock deep well, and have the characteristics of resisting high temperature and high pressure, resisting electromagnetic interference, being free of limitation of severe environments like complex geometric space, and the like.

It is intended to provide a scaffold whereby a bone and a metallic material can three dimensionally form together a stereoscopic binding layer. Thus, a geometric space sufficient for cell actions is provided. As a result, the time required for the formation of a stereoscopic bond can be shortened and, moreover, a bond can be self-repaired owning to cell actions even in the case where a pair of the bond is injured by a wound, etc. As a material for designing a scaffold, titanium fibers of less than 100 μm in size and having an aspect ratio of 20 or more are selected. Then these fibers are entangled together to form a layer which is integrally fixed by vacuum sintering to a periphery surface of the various implant bodies, and coated with apatite. The fact that the layer contains spaces of an excellent ability to induce a biological hard tissue and fix the same is proved by the material, in which the layer is fixed to the periphery of an implant.

The invention discloses a graphic layout method applicable to a software visualization process, which belongs to the technical field of software visualization. The method comprises: firstly, setting the left upper corner of canvas as the origin of coordinate, performing deep search of a to-be-processed digraph obtained in the software visualization process, and obtaining the coordinate of the left upper coroner of each node frame according to the search result; secondly, acquiring the frame length and width information of each node according to the set text content and type of each node; and finally, obtaining the coordinate of the central point of a frame rectangle according to the coordinate of the left upper corner of each node frame and the frame length and width information of each node. In the invention, when the digraph has a large number of nodes, the intercrossed lines are reduced as much as possible; and the layout of other nodes connected with a node in a geometric space is taken into full consideration, the positions of the nodes in the digraph are concentrated relatively, and the readability of a hierarchic system structure chart is high.

The invention provides a method for simplifying a vertex clustering of three-dimensional models with texture constraint. The method comprises the steps of: expanding the vertexes from a geometric space to a fifth-dimensional space including texture coordinates in consideration of algorithm efficiency in the self-adaptive division processes of the vertexes; dividing the vertexes according to the positions of the vertexes in the geometric space and the texture space in the self-adaptive division processes of the vertexes; in error measurement, respectively computing geometric errors and texture errors, if the error value is more than a given threshold, splitting the current node; and in the self-adaptive division processes of the vertexes, in consideration of saving the storage resources and improving the algorithm efficiency, adopting the relatively important vertex in an original model as a clustering representative instead of computing the geometric position of a new vertex through iteration. The method for simplifying vertex clustering of three-dimensional models with texture constraint organically integrates texture error measurement and geometric simplification, realizes rapid simplification of a mass of complex three-dimensional models and supports efficient three-dimensional visualization of city virtual scenes.

The invention provides a multiagent network finite time containment control method and apparatus. The method comprises the following steps: obtaining a minimum geometric space formed by a navigation agent by detecting the position of a barrier; determining an expected position and speed of a following agent during operation in the space according to a multiagent network topology and the position and speed information of the navigation agent; obtaining a relative position and speed between the following agent and the adjacent agent according to the topological connection situation between the following agents, and designing a finite time control protocol of the following agent according to the relative position and speed; and controlling the following agent to enter the minimum secure areaaccording to the finite time control protocol, and causing the following agent to move according to the expected position and speed. According to the multiagent network finite time containment controlmethod and apparatus, the coordinated security control of the multiagent network is guaranteed by few navigation agents provided with sensors; and second-order linear control based on the positions and speeds of the agents is adopted to effectively improve the fastness and stability of the nonlinear agent group coordinated control.

Presenting a videoconference with a secondary video stream composited by an endpoint. The endpoint may receive, from a bridge of the videoconferencing system, information regarding videoconferencing layouts available to the bridge. The information may include geometries and arrangements of geometric spaces defined by the layouts. The endpoint may transmit a command configured to instruct the bridge to generate a composite video stream according to a specified layout. The endpoint may then receive the composite video stream and a secondary video stream. The endpoint may composite the two video streams by overlaying the secondary video stream upon a geometric space of the layout in which the bridge does not composite a component video stream.

The invention provides an infrared and visible light information fusion navigation method based on bionic vision. The method at least comprises the following steps: (1) image enhancement preprocessing: processing a visible light gray scale gradient problem and a noise problem of an infrared image in an acquired image by adopting a Gauss-Laplace operator; (2) image registration, wherein the main purpose of image registration is to remove or suppress inconsistency of geometric space between an image to be registered and a reference image; (3) image fusion: simulating an ON confrontation system by using a Gaussian function to obtain an enhanced image, simulating the confrontation system by using a logarithmic function to obtain a suppressed signal image, then forming a pseudo-color image, andperforming color distortion correction; and (4) visual navigation. The navigation method has the excellent characteristics of strong anti-interference performance, good imaging capability and high resolution, and meanwhile, the image registration algorithm based on the salient region is adopted, so that the registration real-time performance is high, and the navigation algorithm is high in speed.

The invention discloses a heater of an ingot furnace. The heater is composed of a first electrode, a second electrode and a heat generating body located between the first electrode and the second electrode. Specifically, the heat generating body is in electric connection with the first electrode and the second electrode respectively; the first electrode and the second electrode are used for directly or indirectly connecting a power source so as to make an electric current formed in the heat generating body located between the first electrode and the second electrode; the heat generating body extends along a longitudinal direction and / or a radial direction to at least partially surround the lateral side and / or the end of a crucible, wherein the heat generating body is used for forming a temperature-grading thermal field. The heater itself has small geometric space occupation and light weight, can generate a temperature field in graded distribution, and can improve the crystal growth speed. In addition, the heater has good effects on seed crystal protection and planar solid-liquid interface providing in single-crystal-like ingotting technologies so as to enlarge a single-crystal region.

The invention relates to a greening and cooling device utilizing condensed water of an air conditioner, which is characterized in that a water storage tank is arranged on an outdoor machine of the air conditioner, water can be conveyed into the water storage tank through a water inlet device, the water inlet device is connected with a drain pipe of the air conditioner, and the condensed water which flows out of the drain pipe of the air conditioner flows into the water storage tank from the water inlet device; a greening tank is completely or partially contained by the water storage tank, a geometric space is formed between the bottom of the greening tank and the bottom of the water storage tank, and the geometric space is used for storing water; and through holes are densely distributed on the bottom of the greening tank or the accessory at the bottom of the greening tank, and the water in the water storage tank is conveyed upward to the soil in the greening tank through the bottom of the greening tank or the accessory at the bottom of the greening tank, thereby providing moisture for plant growth in the greening tank.

The invention relates to the wireless communication filed, discloses a triangulation-based data transmission system and a method for sensor networks, and solves problems of data transmission of the sensor networks that network stabilization between nodes is poor, quality of service (QoS) of links cannot be satisfied, and calculation of the nodes is complex in the prior art. The data transmission system comprises a neighbor node information collecting module, a data processing module and a data transmitting module, wherein the neighbor node information collecting module is used for collecting hello packets cyclically broadcast by neighbor nodes and including the neighbor node information, forming an information table of the neighbor nodes, and updating the information table of the neighbor nodes by monitoring statuses of the neighbor nodes; the data processing module is used for constructing a geometric space module between the nodes and the neighbor nodes through triangulation, forming a data transmission route between the nodes, and updating the triangulation to form a new data transmission route when the information table of the neighbor nodes changes; and the data transmission module is used for data transmission and management according to the data transmission route between the nodes. The triangulation-based data transmission system and the method for the sensor networks are suitable for data transmission under influence of the node movement factor.

The present invention discloses a potential target area detection method based on a convolutional neural network and a conditional random field. The method comprises the following steps of: 1) performing color space and geometric space conversion of the scene images, taking the images as input of the neural network after de-mean processing; 2) constructing a structural network with fusion of a convolutional neural network and a conditional random field, and generating three-way output on the final convolutional layer of the convolutional network, wherein the first-way output is coordinates ofM candidate frames, the second-way output is the binary tag of each candidate frame, the third-way output is similar features of each candidate frame, the three-way output form input nodes of a total-connection conditional random field to obtain the posterior probability of each candidate frame through global optimization; and 3) performing non-maximum inhibition according to the posterior probability to obtain Top K final results. The potential target area detection method based on a convolutional neural network and a conditional random field can obtain a target area detection result with higher location precision and better robustness through optimization of multi-image input and the conditional random field.

The invention discloses a closed-loop detection system and method based on multi-feature fusion. The closed-loop detection system based on multi-feature fusion comprises a data collection module usedfor collecting an image of a scene by using a laser sensor and preprocessing the image of the scene, a geometric feature extraction module used for extracting the geometric structure features of the scene, a visual feature extraction module used for extracting the visual features of the scene, a feature fusion module used for fusing the geometric structure features and the visual features througha data dimension reduction method, and a closed-loop detection module used for carrying out closed-loop detection by using the fused features. According to the closed-loop detection system and methodbased on multi-feature fusion, robust scene feature representation is obtained by fusing the visual features and the geometric structure features of the appearance of the scene, 'perceptual confusion'in scene matching is reduced by making use of the geometric space constraints of feature matching, and the error detection rate is reduced. Therefore, the scheme of the invention is of high expansibility and robustness.