W.I.P. Summit Road, Christchurch, New Zealand

Discussion in 'Tracks' started by barf, Nov 12, 2018.

  1. barf

    barf New Member

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    Summit Road, Christchurch, New Zealand

    About
    Due to rockfall damage from the Christchurch 2011 earthquake and the risk of further rockfall in aftershocks, sections of the Summit Road on the Port Hills of Christchurch, New Zealand were closed.

    Using LiDAR and satellite data, the Summit Road is being brought back to life for your driving pleasure. About 13km of approximately 50km has been created so far.

    The port hills mesh was created by performing (2.5 dimension) Delaunay triangualtion on an excerpt of LiDAR from 2015 in Linux using Python, QGIS, GDAL and Blender. Creating a scene this large, and making it usable involves some challenges.

    Development
    Work is currently underway on the following tasks:
    • Create physical driving surface by subdividing, contouring and flattening terrain mesh.
    • Create and place New Zealand road signs (3D art assets).
    Other tasks and milestones are being tracked on the project issue tracker.

    The LINZ LiDAR digital elevation model (DEM) vertical accuracy specification is +/- 0.20m (95%). Horizontal accuracy specification is +/- 1.00m (95%). The final spatial accuracy is approximately ±2m @ 90% confidence level in clear open spaces. Object positions and finer details are otherwise approximated.

    NASA's ASTER GDEM is used for the distant terrain mesh (~30m resolution). QGIS is used to harmonize all map projections (ie; WGS84 in ASTER) to use the NZGD (EPSG:4326) coordinate reference system (CRS) before import into Blender. The Blender scene is configured to use metric measurements and NZGD.

    LINZ orthophotography with accuracy down to 30cm/pixel resolution is then draped over the terrain. QGIS is used again to create excerpts of orthophotography which are then imported into Blender.

    Screenshots
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    Video


    Support
    https://www.patreon.com/foobarf
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    Tibor Solyom, Kibbutz and luchian like this.
  2. luchian

    luchian Administrator Staff Member

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    Hi there. Very interesting and abitious project. It sounds well thought at first glance.
    Good luck with it, will be following this.
     
  3. AccAkut

    AccAkut Member

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    I think you posted that before, right? Nice to see it still going :)
     
  4. barf

    barf New Member

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    yep still going, had a 3 month holiday and I started to miss blender :D

    progress today:
    • added some road cones, some objects at sign of the kiwi, sugar loaf and mt pleasant rd
    • fixed the paths to textures which changed when moving to git
    • road contouring/flattening
    • sun azimuth/elevation corrected for 8th nov 2015 (date of orthophotography so shadows line up)
    • placed down big fuel tanks at lyttleton wharf
     
    Tibor Solyom likes this.
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