112 results about "Map projection" patented technology

An apparatus and method for rapid translation of geographic latitude and longitude into any of a number of application-specific location designations or location classifications, including street address, nearest intersection, PSAP (Public Safety Answering Point) zone, telephone rate zone, franchise zone, or other geographic, administrative, governmental or commercial division of territory. The speed of translation meets call-setup requirements for call-processing applications such as PSAP determination, and meets caller response expectations for caller queries such as the location of the nearest commercial establishment of a given type. To complete its translation process in a timely manner, a memory-stored spatial database is used to eliminate mass-storage accesses during operation, a spatial indexing scheme such as an R-tree over the spatial database is used to locate a caller within a specific rectangular area, and an optimized set of point-in-polygon algorithms is used to narrow the caller's location to a specific zone identified in the database. Additional validation processing is supplied to verify intersections or street addresses returned for a given latitude and longitude. Automatic conversion of latitude-longitude into coordinates in different map projection systems is provided. The memory-stored database is built in a compact and optimized form from a relational spatial database as required. The R-tree spatial indexing of the memory-stored database allows for substantially unlimited scalability of database size without degradation of response time. Maximum performance for database retrievals is assured by isolating the retrieval process from all updating and maintenance processes. Hot update of the in-memory database is provided without degradation of response time.

A combined map scale and measuring tool can be used in digital mapping systems. In the scale mode, the scale indicates the correct scale, for example, at the center of the map. It can be updated with every pan, zoom or resize operation the user performs, and can further update to compensate for map distortion caused by the map projection. The tool mode is entered once the user drags one or both of the scale endpoints onto the map. The distance between two endpoints of the tool can be displayed. A new point can be added each time the user drags a line between existing endpoints of the tool. Info windows can be opened that include relevant information about the endpoints (e.g., latitude/longitude, geo code), and provide option to convert the tool segments to driving directions. A drag and drop location marker is also provided.

There is provided a method and system for creating and displaying a map projection of a device's real-time viewing area to depict virtual objects, the virtual objects providing a reflected view of real-time objects displayed within the device's viewing area, the method comprising: displaying a real-time image of the device's viewing area taken from a geographical location on a display; retrieving the map projection for revealing the reflected view as an elevated view of a ground surface about the device's current geographical location and in accordance with the device's viewing area; superimposing the map projection on the display and overlaid in an upper portion of the real-time image; and defining one or more markers configured to show a relationship between the map projection and the real-time image, each marker overlaid on the display and configured to connect between the virtual object in the map projection and the corresponding real-time object on the real-time image.

Enterprise communication display systems enable life-like images for videoconferencing and entertainment productions. Life-like images appear in a 3D environment where imaged people are visible through the use of specially configured see-through displays. Imaged people can also be viewed amongst a reflected foreground. Methods for enterprise wide deployments for corporate, healthcare, education, and government communications, including hotel properties and a property management system are shown. The invention further advances the communication and display art by creating novel direct projection see-through screen configurations that eliminate unwanted secondary images in the room, conceal exposed projector lenses, reduce lens flare, makes practical multi-use room installations, images conferees among a room environment, enables touch screen interactivity, and utilizes extreme short throw projectors to reduce cost and bulk of common throw projectors. Further, numerous unique devices and systems are disclosed of transparent OLED videoconferencing and displays. Further, unique embodiments of aiming a camera through a transparent OLED for eye contact videoconferencing are disclosed. Additionally, an imaged map projected interior environment that produces the rooms ambient light is disclosed.

A method for rendering a shadow in a 3 D scene includes generating a penumbra map using a z-buffer and generating an occluder map using the z-buffer. The penumbra map and the occluder map are projected into a 3 D scene to render at least one shadow having a penumbra region and an umbra region.

Methods and systems for processing video data are provided. For example, a video bitstream can be obtained that includes a video frame of a spherical representation of 360-degree video data. The video frame can include a planar surface of a geometry, and the planar surface can include a plurality of pixels. Three-dimensional coordinates of a target point of the spherical representation can be determined. A planar surface of the geometry to which the target point is to be mapped can also be determined. The planar surface can be determined based on the three-dimensional coordinates of the target point. Two-dimensional coordinates of a mapping location on the planar surface to which the target point is to be mapped can be determined based on the three-dimensional coordinates of the target point and an adaptation parameter. A pixel value can then be generated based on one or more pixels associated with the mapping location. The pixel value can be assigned to the target point.

The present invention relates to a laser radar point cloud data obstacle detection algorithm. The algorithm comprises: obtaining original data and performing analysis, employing a grid map projection algorithm, performing first-stage grid extraction, establishing a second-stage grid and extracting information, performing barrier determination through adoption of a blocking domain expansion calendar algorithm, and obtaining barrier coordinates. The laser point cloud data is obtained to establish a two-stage grid map, a hanger is rejected to perform eight neighborhood expansion of the second-stage grid to traverse the first-stage grid, and an algorithm of calculating a height difference in a partition mode is employed to determine the barriers. The laser radar point cloud data obstacle detection algorithm reserves the feature of a rapid and stable grid method and solves the problem of the shielding and fracture among barriers and the problem that the grid at a distance is lack of three-dimensional point cloud to caused check leakage.

The invention discloses a network map rectifying and drawing method under dynamic map projection. The method comprises the steps of, first of all, according to the comparison of the projection types of clients sides and server sides, carrying out projection transformation calculation of geographical range values, then calculating reversely to acquire the rank numbers and the map levels of all the tiles to be loaded by using cutting principles of a tile map and requested parameters, and carrying out error correction to the geographical range values of each tile through the error deviation values of the tile map acquired by using a plurality of feature points. When each tile is downloaded, encryption is carried out by using a data encryption standard (DES) encryption algorithm, and the tiles are saved in an ini format file which has a same name with the map tiles in sequence. When the downloading of the needed map is completed, the ini file can be deciphered, the geographical range values and the like after correction are read, and the drawing of each map tile is achieved. The network map rectifying and drawing method under dynamic map projection achieves drawing of the network tiles after the error correction, greatly improves the accuracy of data, and enhances the analyzability of the data.

An improved automobile. An exemplary automobile includes an engine, a set of wheels connected to the engine, a chassis connected to the engine, and an electrochromatic windshield connected to the chassis. The electrochromatic windshield is operable to darken and un-darken the electrochromatic windshield. A video projection system is also connected to the chassis. The video projection system is operable by a driver to project an overlay image on the electrochromatic windshield. The electrochromatic windshield can be darkened by activation of the video projection system and un-darkened by deactivation of the video projection system. The video projection system can be used to project a map onto the electrochromatic windshield. The video projection system can then be used to project a relative position of the driver's vehicle, other vehicles and obstructions on the map, as well as highlighting and tracking, via graphical markings, these objects as they enter the windshield's projection plane.

Enterprise communication display systems enable life-like images for videoconferencing and entertainment productions. Life-like images appear in a 3D environment where imaged people are visible through the use of specially configured see-through displays. Imaged people can also be viewed amongst a reflected foreground. Methods for enterprise wide deployments for corporate, healthcare, education, and government communications, including hotel properties and a property management system are shown. The invention further advances the communication and display art by creating novel direct projection see-through screen devices that use extreme short throw projectors to reduce cost and bulk of common throw projectors. Further, numerous unique devices and systems are disclosed of transparent OLED videoconferencing and displays. Further, unique embodiments of aiming a camera through a transparent OLED for eye contact videoconferencing are disclosed. Additionally, an imaged map projected interior environment that produces the rooms ambient light is disclosed.

Enterprise communication display systems enable life-like images for videoconferencing and entertainment productions. Life-like images appear in a 3D environment where imaged people are visible through specially configured see-through displays. Imaged people can be viewed amongst a reflected foreground. Methods for enterprise-wide deployments for corporate, healthcare, education, and government communications, including hotel properties and a property management system are shown. Direct projection see-through screen configurations are created that eliminate unwanted secondary images in the room, conceal exposed projector lenses, reduce lens flare, makes practical multi-use room installations, images conferees among a room environment, enables touch screen interactivity, and utilizes extreme short throw projectors to reduce cost and bulk of common throw projectors. Further, a multi-format VR/AR production system is disclosed enabling several formats to be created simultaneously. Further, a camera through a transparent OLED for eye contact videoconferencing is disclosed. Additionally, an imaged map projected interior environment that produces the rooms ambient light is disclosed.

The invention provides a geographic information system (GIS) information ultrahigh resolution displaying method. The method is a splicing displaying method which includes acquiring GIS map information through cluster map sub blocks and WMS service in parallel on the basis of the computer cluster parallel processing, utilizing map projection transformation distribution to process data and conducting parallel texture rendering displaying through a graphic processing unit (GPU). A computer cluster is utilized to acquire, process and display map information, and the massive GIS map processing and displaying problem can be effectively solved. According to a cluster map sub block technology, sub block processing is conducted on a high resolution map according to cluster node machines, the resolution of the displayed map can be expanded by increasing the number of the node machines and is not limited by the resolution of a display screen, and ultrahigh resolution GIS information displaying can be achieved.

Methods and systems for processing video data are provided. In one example, a first video bitstream can be obtained, which can include video frames of a spherical representation of 360-degree video data. Two-dimensional pixel coordinates of a pixel location of a planar surface of a geometry can be determined. The planar surface can be part of a plurality of planar surfaces of the geometry. Two-dimensional normalized coordinates can be determined for the pixel location based on an adaptation parameter and the two-dimensional pixel coordinates. Three-dimensional coordinates of a sample point of the spherical representation of the 360-degree video data can be determined based on the two-dimensional normalized coordinates. A pixel value for the pixel location of the planar surface of the geometry can be determined based on the sample point, and a second video bitstream can be generated that includes pixel values determined for pixel locations of the plurality of planar surfaces of the geometry.

A system and method for displaying ultrasound motion tracking information are provided. The method includes obtaining three-dimensional (3D) ultrasound image data of a scanned object. The 3D ultrasound image data includes motion tracking information. The method further includes transforming the 3D ultrasound image data with the motion tracking information to a two-dimensional (2D) map projection and generating a 2D map based on the 2D map projection.

The invention provides a laser radar technique-based smart city 3D live map system. The system comprises a 3D base map generation system, a map data and map projection system, a 3D map database system and a 3D map display and browse system, wherein the 3D base map generation system is used for generating a 3D base map; the map data and map projection system is used for storing 3D live map data and completing 3D base map projection and 3D live map projection; the 3D map database system is used for storing 3D model data of all the 3D surface features and appearance attributes of the 3D surface features to be queried by users; and the 3D map display and browse system is used for calling and displaying a 3D live map by the users. According to the system provided by the invention, more city 3D experience can be brought to the users in the navigation process, the fact that what you see is what you get in the navigation can be realized, and the correctness and reliability of the navigation can be improved, thereby improving the efficiency and safety of the map.

The invention discloses a Google user map text labeling method based on an SVG. The method includes the steps that an SVG object with a path text is added to a self-defining overlaying layer of a Google map, and when the overlaying layer is drawn, a current map projection is acquired through a getProjection method; a labeled path represented by longitudes and latitudes is converted into a pixel path under the current projection; the length of the pixel path is calculated and compared with the length of a labeled text, if the pixel path is too short, the SVG object is not displayed; the starting point position of the labeled text on the pixel path is determined so that it can be guaranteed that the text is located in the middle of the path; the space, actually occupied by the labeled text, of the pixel path is determined according to the length of the text; the minimum coordinate value of the labeled text on the pixel path is determined through comparison and serves as a top left corner coordinate of the SVG object; the pixel path of the labeled text relative to the SVG top left corner is calculated; the text pixel path expressed by coordinate strings is converted into a path of path elements in the SVG, and d attributes of the path are replaced. The text labeling problem is solved, and a new way is found for Google user map text labeling.

The invention provides an orthorectification method of a non-control satellite-borne SAR (synthetic aperture radar) image based on an inverted RD positioning model. By the method, the problem that ground height values need to be iteratively acquired in the prior art can be solved; the orthorectification process of the SAR image is easy for multiple programming; and the processing efficiency is improved on the basis of ensuring the geometric correction precision. The method comprises the following steps of firstly constructing a slant distance doppler equation set to obtain geography latitude and longitude of four points by using satellite orbit positions corresponding to pixels; then mapping a map to obtain the east coordinate and north coordinate of the four points and the needed image map range; mapping an inverse map to obtain the geography latitudes and longitudes of the pixels; converting into position vectors of the pixels under a ground-fixed coordinate system; finally resampling gray values of the needed image pixels by using a bilinear interpolation method; and obtaining the corresponding gray values until all pixels in the needed image map range are calculated, thereby obtaining the corrected image.

The invention discloses a VTS system radar return video display method based on a geographic coordinate system. The VTS system radar return video display method comprises the following steps: S1, the program of a VTS system is divided into two threads, wherein the thread I is responsible for receiving and caching a radar return message; S2, the thread II responds to electronic map indication range variation to generate a new to-be-overlapped radar return video map layer; S3, the generated radar return video map layer is overlapped on the current electronic map. With adoption of the VTS system radar return video display method, the radar return video display problem of a ship traffic management system, particularly to a system with the data format of the electronic map measured by the geographic coordinate system, is solved, and under the condition that the system overhead is acceptable, the VTS system radar return video display method ensures the position consistency of a radar return video and a ship target on the electronic map, is particularly suitable for the ship traffic management system, and is generally used for a single port, an offshore area and an inland river with smaller geographic display ranges, as well as a system allowing certain deformation of map projection.

An improvement in the coding efficiency resulting from improving the motion vector compensation process of omnidirectional videos is provided, which uses a mapping f to map the frame F to encode to the surface S which is used to render a frame. The corners of a block on a surface are rectified to map to a coded frame which can be used to render a new frame. Various embodiments include rectifying pixels and using a separate motion vector for each group of pixels. In another embodiment, motion vectors can be expressed in polar coordinates, with an affine model, using mapped projection or an overlapped block motion compensation model.