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Google Earth Beaten By Autorendering From Photos 176

Flu writes "Sweden's major engineer newspaper NyTeknik writes about a new technology which is used to automatically convert 60.000 aerial photographs of Stockholm, Sweden, into a 3d-world, similar to Google Earth's rendering of major buildings in some US cities. But unlike Google's laser-measured rendering, this technique took less than 8 days (including the photography) to automatically generate the 3D-model of Stockholm — which includes every building and details as high as individual trees! The program was developed by C3, a subsidiary of the Swedish defense industry company SAAB, together with a PC gaming company called Agency 9. The complete article is available (sorry, Swedish only), but the 3D-rendering of Stockholm is available as a Java applet from the Swedish phone-dictionary service Hitta.se (tick the checkbox — it's an ordinary disclaimer, and click 'Till 3D-kartan')." The technique used gives a cool water-color look to the scenes, too.
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Google Earth Beaten By Autorendering From Photos

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  • viewing angle (Score:5, Informative)

    by nguy ( 1207026 ) on Saturday June 07, 2008 @08:03PM (#23697077)
    The techniques for recovering 3D shape from photographs have been well known for a while. But if all the pictures you use for the 3D reconstruction are from overhead, the street level view will be missing all the stuff you can't see from overhead. It may be called a "3D model", but it's not a complete or accurate 3D model.

    If you want decent street level views, you really do need street level photographs. And laser scanners are still a lot more reliable than image based 3D reconstruction.
  • by MaXMC ( 138127 ) on Saturday June 07, 2008 @08:13PM (#23697137) Homepage
    I'm posting the article in English here with some changes due to Translate.Google not being able to translate everything 100%.

    ---
    Hitta.se beats Google Earth
    with new 3D-technology from Saab.

    Search company Hitta.se has a new Web service that is better than Google Earth to show Sweden in a 3D view. In Stockholm there, for example, every single building as a realistic 3D model.

    With the help of robotics from Saab and the Swedish software for computer games Hitta.se search company has developed a Web service that shows Sweden in 3D and which is clearly better than the corresponding service from Google Earth.

    Directly in the browser, users can zoom in, tilt and turn the flygfotograferade views across the country. With the help of altitude measurements images of the land are created where the mountains and valleys appear with genuine feeling of depth.

    The new service, which launched May 29, is also all buildings from Stockholm, in the form of realistic 3D models.

    Although they can be turned and turned and seen from any height and angle.

    Later this year, including the second appearance of Sweden's largest cities as a complete 3-D models.

    The major competitor in the show Sweden in 3D is Google Earth. But there are only a few dozen 3-D buildings from Stockholm and a few other cities.

    Google's 3D view of Sweden was also much lower quality than that Hitta.se offer. Both in terms of image resolution and altitude.

    -- We have created 3-D feature to give users a more fun and more realistic ways to use our maps, "says Rui de Sousa Brit who is president and CEO of Hitta.se

    But the new service does not yet cover all planned features. Therefore, it's "sneak launched" and goes by the name of "the lab" on the company's website.

    Moreover, such as some 3D buildings refined when the houses angles can be a little crooked and some facades have bad sharpness.

    The technology used was developed by the Swedish companies C3 Technologies in LinkÃping and Agency9 in Lulea.
    C3 is a subsidiary of Saab and develop technology that has its origin in seeker for robots.

    The technology is based on high resolution aerial photography with carefully calibrated cameras. In order to build 3-D model of Stockholm, which covers an area of 200 square kilometres was 60 000 images from 600 metres above sea level, which took three days.

    Then, it took only a few more days to automatically create 3-D model, where even individual trees are included.

    Tommy Johansson who is president and CEO of C3 know that some defence in the world have developed similar technology. But he is not aware of anyone else who introduced the technology for civilian purposes.

    -- We aim to launch our technology globally and believe that, for example, urban planners and businesses similar Hitta.se can become our customers, "says Tommy Johansson.

    Other companies based 3-D models of entire cities primarily use lasermÃtningar to collect 3D data. For example, Google and Microsoft for their service Virtual Earth.

    It is a technology that is much more costly and time consuming than the C3's way.

    Photo and mapping services from Google and Microsoft require users to install special software on your own computer. In Google Earth in the form of a stand-alone program and the Virtual Earth as a plug which is available only for Windows.

    But Hitta.se 3D runs directly into the browser by using javateknik and works for most operating systems and browsers.

    -- I think that both Google and Microsoft may have some problems with sleep when they see the new service from hitta.se, "says Tommy Johansson.

    In order to be able to present all 3D data in the new map in the form of realistic buildings used technology developed for computer games.

    It comes from the Agency 9 of Lulea.
    The company began by building a so-called rendering engine for web games. Eg. software that draws up 3D environments on the computer screen.

    -- But the web
  • Re:Game mods (Score:5, Informative)

    by urcreepyneighbor ( 1171755 ) on Saturday June 07, 2008 @08:14PM (#23697143)

    Admittedly, that would start getting creepy when you realize those are real residences and the like.
    Yeah, nothing like that has ever happened before [gamepolitics.com].
  • Re:viewing angle (Score:3, Informative)

    by BiggerIsBetter ( 682164 ) on Saturday June 07, 2008 @08:23PM (#23697181)
    It's still very cool considering the small time and cost involved. Even if not mm-perfect, it's still invaluable for travellers making plans and virtual tourists alike.
  • Re:This just in... (Score:3, Informative)

    by KokorHekkus ( 986906 ) on Saturday June 07, 2008 @08:47PM (#23697297)
    Yeah, I doubt that Google would want to acquire a major defense contractor (the automotive part was sold to GM and the rest remained in Sweden for most parts). The SAAB AT4 has even been adopteb by the US Army where it's know as the M136 antitank grenade launcher (http://en.wikipedia.org/wiki/M136 [wikipedia.org])
  • Re:viewing angle (Score:4, Informative)

    by nguy ( 1207026 ) on Sunday June 08, 2008 @04:39AM (#23698965)
    The beauty of this is that it lets you get a map of virtually anywhere from the air.

    No, that isn't the beauty of "this". These people have done a poor job at 3D rendering from aerial imaging. If you want to see well-rendered photographs based on aerial imaging, have a look at the Mars Express pictures:

    http://www.esa.int/SPECIALS/Mars_Express/SEM565R03EF_0.html [esa.int]

    That was done 10 years ago, and even then, the underlying technologies weren't new.
  • Re:viewing angle (Score:2, Informative)

    by Paul Jakma ( 2677 ) on Sunday June 08, 2008 @07:20AM (#23699475) Homepage Journal
    Mars Express also gathered topographical data via RaDAR. So they applied the photos as textures onto a model constructed directly from data. That's not the same thing as deriving the 3D model from 2D photos, as in the case here.
  • by nguy ( 1207026 ) on Sunday June 08, 2008 @01:29PM (#23701075)
    Those images were created using a stereo camera and photogrammetry.

    http://citeseer.ist.psu.edu/267813.html [psu.edu]

    Why do jerks like you insist on presenting things they imagine to be true as fact?

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