173 results about "Virtual coordinates" patented technology

A system and method for peer based localization system using radio technology, such as Bluetooth or Wi-Fi ad-hoc technology that enables mobile devices such as cell phones, smart phones, laptops, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, etc. to discover their physical location relative to one another. In addition, the peer based localization can use a plurality of radio technologies to increase the accuracy of the physical location estimates. Additionally or alternatively, the peer based localization technique can be combined with infrastructure based location techniques, such as triangulation, GPS, or infrastructure based Wi-Fi localization in order to transpose virtual coordinates into physical coordinates.

The described method and system provide an efficient routing of data packets protocol in an event-driven and delay-constrained WSN (wireless sensor network) that optimizes the sleep/wake schedule of nodes to maximize the lifetime of the WSM, subject to a constraint on the source-to-sink delay. Online forwarding techniques may be used to transfer data reports from monitoring nodes to the sink. A delay-constrained and energy-efficient routing protocol (DCEER) for asynchronous WSNs may be used to maximize the lifetime of the WSN while remaining within the maximum allowable delay requirements. With DCEER, each node may maintain the historical cost of forwarding a packet from itself to the sink as its virtual coordinate, and packets are forwarded in the direction of descending coordinates. The cost-based coordinates may change dynamically with a time-varying channel or topology. Nodes may apply a relay-selection scheme to choose a next-hop relay from a set of multiple potential relay candidates, based on a tradeoff between forwarding energy consumption (FEC) and waiting costs. The optimal stopping time for the relay-selection process may be determined based on expected forwarding and waiting costs, and the nodes may operate according to an optimal sleep/wake schedule based on waiting costs and expected traffic flow.

A system and method for scalable status change detection in a network of nodes includes embedding node coordinate positions into a virtual map environment. A cluster of nodes are represented with a representative node to form a hierarchy of nodes and clusters where changes in a status of the representative node imply a status change in the nodes of the cluster. By selectively monitoring the representative nodes for the changes in status, the representative nodes create a capability for scalable monitoring of the network.

The invention relates to the technical field of mobile communications, and discloses a web page positioning method and system. The method comprises the following steps of: generating an anchor bookmark for dotting, wherein the anchor bookmark contains the recorded virtual coordinate position, position proportion of a display content in complete page data, keywords of the display content, and source address of the page of the display content; storing the web page content, for which the anchor bookmark is generated, into a buffer memory; when a user needs to browse the web page content corresponding to the anchor bookmark, reading corresponding web page content from the buffer memory according to the source address of the page of the display content in the anchor bookmark; and displaying the position of the keywords of the display content in the read web page content according to the virtual coordinate position and the position proportion of the display content in the complete page data in the anchor bookmark. The method and the system can jump to some well-stored page accurately and quickly, which is convenient for the users.

In a broad aspect of the invention, the master printed form is scanned and processed according to a forms definition program to produce a virtual form file comprising a virtual layout of the significant regions such as bubble targets of printed material on the form, on a virtual coordinate system. Production forms that have been marked by subjects (e.g., students, voters, survey respondents, etc.), are then scanned to produce a marked form file of gray scale darkness values for each marked form. The marked form file and the virtual form file, are compared and processed to determine the location and spatial relationships of the marks on the marked form, in relation to the virtual coordinate system of the virtual form. The raw scan of each marked form is also processed to determine whether darkened areas on the marked form image should be interpreted as intentional responses from the subject, at the virtual coordinates where targets are located on the virtual form.

A portable device includes a display unit, a memory, input keys, and a microprocessor. The display unit has a character window, which includes a selecting character window and a selected character window, for displaying characters. One character line including the character which has virtual coordinates indicated by a cursor is displayed in the selecting character window, and the character selected from the characters in the selecting character window is displayed in the selected character window by input keys. The memory stores the characters having intrinsic virtual coordinates, and several input keys serve for navigating across the characters by using the virtual coordinates of the characters to select the characters. The microprocessor controls the display of the characters on the display unit in correspondence to the input of the input keys.

The invention provides a navigation method for an endoscope. The navigation method comprises the following steps of: generating a virtual three-dimensional model by utilizing data generated by CT (computed tomography) equipment for scanning a diagnosis body; calculating virtual coordinates of the endoscope, corresponding to the current actual coordinates of the endoscope in a coordinate system of the virtual three-dimensional model and obtaining a corresponding virtual observation direction of the endoscope in the coordinate system of the virtual three-dimensional model; taking intracavity images shot by a camera shooting assembly of the endoscope at the current actual coordinates and in the current actual observation direction as real position images, determining images corresponding to the virtual coordinates and the virtual observation direction in the virtual three-dimensional model and serving as virtual position images, comparing the real position images with the virtual position images to obtain a similarity result, and adjusting coordinate values of the virtual coordinates and direction value of the virtual observation direction, so that the coordinate system of the virtual three-dimensional model corresponds to an electromagnetic navigation coordinate system. By adopting the navigation method for the endoscope provided by the invention, the problem that coordinates and images in the electromagnetic navigation system and the virtual three-dimensional navigation system are not consistent when the two systems are combined and used can be solved.

The present invention relates to a space matching method and system for mixed reality equipment. The method comprises the following steps that: the image of a real object in a real space is acquired; the image is processed, the real space coordinates of the real object are obtained; the real space coordinates are converted into image coordinates; the image coordinates are converted into first pixel coordinates; and the virtual coordinates of a virtual object are converted into second pixel coordinates belonging to the same pixel coordinate system as the first pixel coordinates, so that a mixed reality scene can be formed. With the space matching method and system of the invention adopted, the space matching error of the virtual object and the real scene can be decreased, and therefore, the mixed reality scene is more realistic, and user experience is improved.

The invention relates to a large-scale formation relative navigation method, which relates to the field of relative navigation and can solve the problem that the existing relative navigation technology can not adapt to a variety of situations. The method comprises the following steps: 1) using a formation system for designating the point of origin of a coordinate of the relative navigation, selecting n members from the formation as navigation base stations, and selecting two virtual navigation base stations if the number of the navigation base stations is less than 2; 2) using an initial value estimation module for estimating the positions and the speeds of the members of the formation relative to the point of origin of the coordinate or the virtual point of origin of the coordinate when the algorithm starts to operate, and taking the estimation results as the initial values for starting the filter algorithm; 3) using a filter algorithm module for constantly predicting and amending the member state, and obtaining the positions and the speeds of the members of the formation relative to the point of origin of the coordinate or the virtual point of origin of the coordinate; and 4) outputting the positions and the speeds relative to the point of origin of the coordinate or the virtual point of origin of the coordinate. The method can reduce the cost and the weight of the members of the formation, and the principle is simple and easy to realize, thereby being applicable to realizing the relative navigation under a variety of situations.

The present invention relates to an improvement method for capacitive touch pad edge positioning, the capacitive touch pad possesses a plurality of tangible induction lines in one direction; one of the plurality of tangible induction lines is an edge induction line; the plurality of tangible induction lines possess respective coordinates; the method is characterized by comprising following steps: obtaining induction amounts of the plurality of tangible induction lines; defining virtual induction lines at the external sides of the edge induction lines, and giving virtual coordinates and virtual induction amounts to the virtual induction lines; calculating average induction amounts of two random adjacent induction lines and coordinate medians of the plurality of tangible induction lines and the plurality of virtual induction lines; determining the coordinate in the direction by interpolation operation of the average induction amounts and the coordinate medians. The improvement method for capacitive touch pad edge positioning provided by the invention has the advantages in that blind angle regions can be eliminated.

A capacitive touch panel has a plurality of traces including a boundary trace, and a virtual trace is defined outward of the boundary trace and assigned with a virtual coordinate and a virtual capacitance for interpolation to position a touch point around the boundary of the capacitive touch panel, thereby eliminating the non-addressable region of the capacitive touch panel.

The invention provides a visual optimization system of a headset display device. The visual optimization system comprises an imaging module configured for displaying an electronic image, and a virtual coordinate module configured for building a right-angle coordinate system in a plane in which a virtual image is located, wherein the position of the virtual image in the plane is fixed. According to the visual optimization system of the headset display device, the optimal diopters of zoom lenses are obtained according to attention points of eyes of a user and standard diopters of the eyes, the diopters of the zoom lenses are correspondingly adjusted, so that ciliary muscle is in a relaxed state to the greatest extent when the user watches the electronic image, myospasm of the ciliary muscle caused by keeping of a long-term contraction state is effectively prevented, and the condition that the health of the eyes is not damaged when the user uses the kind of products is ensured.

The invention discloses a Bluetooth-based vehicle searching method. The method mainly comprises the steps of: establishing a first rectangular coordinate system; ranging to obtain the first distance between a mobile terminal and a first Bluetooth, the second distance between the mobile terminal and a second Bluetooth and the third distance between the mobile terminal and a third Bluetooth; calculating to obtain the virtual coordinate of the mobile terminal in the first rectangular coordinate system; establishing a second rectangular coordinate system by taking the first Bluetooth as the origin and the south direction where the first Bluetooth is as the second X-axis forward direction; obtaining the included angle between the first X-axis forward direction and the second X-axis forward direction; calculating to obtain the practical coordinate of the mobile terminal in the second rectangular coordinate system; calculating to obtain azimuth information of the mobile terminal in the second rectangular coordinate system; and sending the azimuth information and the first distance to the mobile terminal. Three Bluetooth devices are arranged at different positions of a vehicle; and thus, without other auxiliary positioning equipment, a vehicle owner can rapidly find out the vehicle.

The invention discloses a virtual coordinate system construction method and device, terminal equipment and a readable storage medium. When the virtual coordinate system is constructed, the first coordinates of the first mark point and the second coordinates of the second mark point on the mark rod in the imaging picture of the mark rod acquired by an image sensor are determined, then a first coordinate system of the visual sensor angle of view is constructed according to the first coordinates and the second coordinates and a second coordinate system of the display screen angle of view is constructed according to the third coordinates of a plurality of vertical contact positions of the mark rod on the display screen acquired from the display screen, then the relative relationship between the first coordinate system and the second coordinate system in the three-dimensional space is calculated according to the principle of homography transformation and finally a virtual coordinate systemwhich can realize high-precision tracking of the operation action and accurately calibrate the coordinates of the position of the interactive device in the three-dimensional space can be constructed according to the calculated relative relationship and thus the human-computer interaction effect can be greatly enhanced.

The invention relates to unreal coordinate measuring machine and method based on data image processing. It replaces traditional measuring machine mechanical type three coordinates measurement axis by unreal axis measuring machine and device. It includes working platform, mechanic main body, feeler pin, computer and its peripheral equipment, and image collecting device. The image collecting device is made up of CCD pickup camera, light source, and collection card. Gas float slide rest is set vertical shaft. The vertical shaft is set at the feeler pin. The bottom of the gas float slide rest is set light source and CCD pickup camera. The invention combines gas float technique and unreal shaft measuring, contacting measuring and non contacting measuring to create unreal coordinate measuring machine and method based on data image processing. The whole form is very simplify that the object and measuring system are set at the platform to finish low cost middle accuracy measuring cooperated with computer control and hand pushing measuring system.

The invention discloses a routing void processing method for a wireless sensor network. The method is characterized by comprising the following steps: step 1, a finding node (a finding node means a node that cannot find other nodes much nearer to a target node than the finding node) starts a void exploration packet to calibrate a void edge node; step 2, the finding node maps the void edge node to a virtual circle to obtain a virtual coordinate and starts to distribute the packet to various nodes; step 3, the peripheral area of the current node is divided, different strategies are executed in different areas to select the next node, and a void in the wireless sensor network is bypassed. The routing void processing method for the wireless sensor network can enable the data from different directions to bypass the void effectively and is easy to implement.

The invention discloses an industrial information intelligent monitoring system based on cloud computing. The industrial information intelligent monitoring system comprises a camera, an identificationunit, a monitoring module, an analysis module, a judgment module, a timing unit, an alarm unit, a database and intelligent equipment, the camera is used for monitoring the equipment in real time andautomatically acquiring image information; .The identification module is arranged and used for analyzing the equipment image information acquired by the camera. The image information in a virtual coordinate is marked. the length, the width and the height of the equipment are calculated; according to the distance between the equipment and the camera , the actual equipment size is calculated, and the analysis module accurately calculates the abrasion degree of the equipment according to the related data of the equipment, so that the average abrasion of the equipment is obtained, the equipment identification accuracy is improved, the time consumed for identifying the equipment is saved, the equipment data analysis accuracy is improved, the data accuracy is improved, and the working efficiency is improved.

Improved systems and methods using a border guide and/or border guide easel that enables art instruction in a relatively low cost and simple to use manner suitable for group or individual instruction of a relatively sophisticated nature. A scaled border guide preferably labeled with numbers and letters provides a virtual coordinate or reference system that enables artists to locate multiple random points on the surface to be painted. A physical grid or stencil or the like are not used on the artist's surface. The scaled border lines are used to define a virtual grid on the artist's working surface that may be used to indicate reference, points, positions, sizes and shapes for drawing or painting. Art instruction methods allow the teaching of drawing and painting in a more classical and relatively sophisticated style as compared to paint-by-numbers or grid art.