Photoscanning a Building – 2nd Experiment

Another Photogrammetry Building Scan Experiment

National Trust - Bourne Mill

My second attempt at photoscanning a building, Bourne Mill, a watermill with a working waterwheel inside.

Took 213 photos, but still really need a drone to get images higher up of the roof rather than ground shots only. The stone walls were captured really well, loads of detail and texture. It was a really nice overcast day for capturing the photos with very little shadow. The roof was wet, so the reflected light was near impossible for software to get accurate tracking points from.

Pipeline:
  • Capture

    Photos

    RAW photos taken on Canon 7D, with 50mm Lens and wide 16mm lense.

  • Edit

    Post process photos

    In Adobe Lightroom flatten images and resave in .tga format

  • Align

    Aligning Photos

    Photogrammetry software begins to analyse the images and align them in 3D space to create point cloud from

  • Mesh

    Creation of Mesh and Texture

    Point cloud data is used to create a mesh from, and then extract colour point data to make a diffuse map

Except for the roof, this one turned out really nice on the walls of the building, really want to go back on a dry overcast day and try again.

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