摘要:
Interactive geographic information systems (GIS) and techniques are disclosed that provide users with a greater degree of flexibility, utility, and information. A markup language is provided that facilitates communication between servers and clients of the interactive GIS, which enables a number of GIS features, such as network links (time-based and/or view-dependent dynamic data layers), ground overlays, screen overlays, placemarks, 3D models, and stylized GIS elements, such as geometry, icons, description balloons, polygons, and labels in the viewer by which the user sees the target area. Also, “virtual tours” of user-defined paths in the context of distributed geospatial visualization is enabled. Streaming and interactive visualization of filled polygon data are also enabled thereby allowing buildings and other such features to be provided in 3D. Also, techniques for enabling ambiguous search requests in a GIS are provided.
摘要:
An exemplary method for navigating a virtual camera in a three dimensional environment includes determining a point at an off-center location of a viewport of the virtual camera. The point corresponds to a user selection, and the virtual camera defines a field of view to view content of the three dimensional environment. The method also includes rotating the virtual camera toward the off-center location such that the point is located at a center location of the viewport. The method further includes zooming the virtual camera toward the point located at the center location of the viewport. The method also includes after the zooming the virtual camera, re-rotating the virtual camera such that the point is located at the off-center location of the viewport. The method further includes after the re-rotating, rendering the content from a projection of the viewport.
摘要:
A method of reviewing geo-coded information at a geographic information system is disclosed. The method may include receiving information identifying a geo-located object from a submitter of the object, receiving information identifying the location of the geo-located object from the submitter, and receiving a request from a user of the geographic information system for one or more geo-located objects that includes the submitted geo-located object, and transmitting information for permitting display of the geo-located object to the user of the geographic information system.
摘要:
Interactive geographic information systems (GIS) and techniques are disclosed that provide users with a greater degree of flexibility, utility, and information. A markup language is provided that facilitates communication between servers and clients of the interactive GIS, which enables a number of GIS features, such as network links (time-based and/or view-dependent dynamic data layers), ground overlays, screen overlays, placemarks, 3D models, and stylized GIS elements, such as geometry, icons, description balloons, polygons, and labels in the viewer by which the user sees the target area. Also, “virtual tours” of user-defined paths in the context of distributed geospatial visualization is enabled. Streaming and interactive visualization of filled polygon data are also enabled thereby allowing buildings and other such features to be provided in 3D. Also, techniques for enabling ambiguous search requests in a GIS are provided.
摘要:
The capability to render and navigate three-dimensional panoramic images in a virtual three-dimensional environment so as to create an immersive three-dimensional experience is provided. Such a capability can present a three-dimensional photographic experience of the real world that is seamlessly integrated with the virtual three-dimensional environment. Depth values associated with the panoramic images may be used to create three-dimensional geometry, which can be rendered as part of the virtual three-dimensional environment. Further, such a capability can enable a user to roam freely through the environment while providing a more natural free-form exploration of the environment than existing systems.