Explain the workflow



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    You have two options to go about creating a 3d reconstruction.

    The manual mode where you run each step separate
    The automatic mode (start button) that does it all in one.

    It depends on your source images which process you should use.
    For turntable photogrammetry the start button will likely work 98% of the time whereas with large objects, landscapes or complex objects you may want to go the manual route.

    So yes, F5 does F6 as first step.

    F6 produces a sparse point cloud that you can use to define the final reconstruction region (as you likely don't want to reconstruct stuff outside the area of interest).

    F5 simply runs alignment, reconstruction, texture one after the other with predefined settings.

    Reconstruction: Preview is just that. It by default uses the sparse point cloud from alignment to give you an idea of the result.
    Normal/High does a proper reconstruction. The difference is the resulting mesh density.

    F5 does include F7 as part of the reconstruction.

    tri = triangle. Which is, in fact, a polygon :)

    RC does not actually produce a dense point cloud like the competition does. It calculates depth maps for each input image and merges the depth maps to derive the final mesh.

    colorize will calculate just the vertex color whereas texture does that plus the texture for the mesh.

    Texturing is quite complex. It does not just take scraps from the original photos but merges colors from different input images together to create a more consistent texture.

    Hope that helps :)
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    Tom Foster
    Thanks a lot for v comprehensive answer.
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