• 【转】Earth Viewers几个三维地球软件比较


    http://vterrain.org/Packages/earth_viewers.html

    Earth Viewers

    This chart compares Google Earth and World Wind against a handful of other software packages which might all be loosely termed "Earth Viewers".  Rough comparisons are drawn to several free (and Free) tools and one commercial one (ArcGlobe) all of which have very different emphases.

     NASA World Wind
    (link)
    Google Earth
    (link)
    VTP
    (link)
    planet-earth.org
    (link)
    osgPlanet
    (OSSIM)
    (link)
    osgdem/
    osgviewer
    (link)
    ArcGlobe
    (link)
    ArcGIS Explorer
    (link)
    Paging of huge datasetsyesyesyesyesyesyesyesyes
    Streaming over internetyesyesnoyesyesyespossible(4)yes
    Includes access to high-quality commercial imagerynoyesnononononoyes
    Unified coordinate system ("space to face")yesyesnoyesyesyesyesyes
    Get elevation of camera and cursornoyesyesnonoyes?yesyes
    Intended for developers
    (Open API)
    yesnoyesnot yetyesyesyes
    (GIS only)
    no
    Intended for end-users
    (Feature-rich GUI)
    yesyesyesyesnonoyesyes
    Import user elevation datapossible¹noyespossible²yesyesyesyes
    Import user image datapossible¹yes (requires
    manual georef)
    yespossible²yesyesyesyes
    Import image data at runtimenononononoyesyes
    Generation/use of datasets
    (elevation/imagery)
    n/awith GUI
    (imagery only)
    with GUIyes (how?)with config
    script (.kwl)
    with command-
    line; very slow
    with GUIwith GUI
    Import GIS datano?no (not in
    free version)
    points and
    vectors only
    possiblenonoyesyes
    Import 3D Modelsnoyes
    (from KML)
    yesyes (demo
    only)
    yesyesyes(3)no
    Buildingsnoyes (simple
    extrusion)
    yesyes (demo
    only)
    nonoyes (simple
    extrusion)
    no
    Roadsnono (only as vectors)yesnononono (only as vectors)no (only as vectors)
    Vegetationnonoyesnonoyes? (with
    osgforest)
    yes?no
    Create Culture at runtimen/ajust placemarksfences, plants,
    3D models
    non/an/a

    partial(5)

    no
    Create GIS featuresnoyes (limited)nonononoyes?
    Free (as in price; gratis)yesyesyesyesyesyesnoyes
    Free (as in freedom; libre)yesnoyesyesyesyesnono
    Estimated size of active user communityhundreds?hundreds of
    thousands
    hundredsdozendozenshundreds?thousands?

    ¹: Raul Aguilera Hermosilla writes: "World Wind, being open as it is, uses "generic" formats for the data (elevation and images) with a rather awkward (but explained fully within the user groups) tiling scheme. What you can do is either replace or superimpose your elevation files or images. This is not for the end user but anyone with enough patience (to find the appropriate details) can do it.  I haven't had the time to actually do it but from what I saw I am pretty sure it can be done."

    ²: Chris writes: For planet-earth you use the Rez toolset to generate the elevations+imagery.  You then have to transfer it to server and there is some manual editing to include.  There *is* an interface online to upload it and have it positioned but there are bugs in it at present.

    3: Can directly import 3DS, SketchUp, VRML and OBJ file formats, with textures.

    4: Streaming: ArcGlobe acts as a client.  Basically for vectors you need one of the server products (ArcIMS, ArcServer or the new image server), or a web server serving a raster file format which supports streaming (ECW and perhaps a few others).

    5ESRI says: "ArcGlobe is an interactive 3D GIS, which means that 3D “culture” objects are treated as symbology attached to point locations.  If you have 3D symbology set up, you can add points to insert/position 3D objects on a terrain surface.  Various people have created add-on interfaces which let you pick the 3D object first, then create a point for it – but these are free extensions, and not in the normal GUI as shipped.  ArcGlobe does not provide a 3D content creation environment for “culture” items.  We generally suggest the use of @Last Software’sSketchUp, because it supports georeferencing.  However, any 3D surface modeler which can export to the 4 supported 3D file formats above should work."

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  • 原文地址:https://www.cnblogs.com/flyingfish/p/1625426.html
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