The future of photogrammetry. NeRF : Neural Radiance Fields

This page summarizes the projects mentioned and recommended in the original post on /r/photogrammetry

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  • awesome-NeRF

    A curated list of awesome neural radiance fields papers

  • Yes. NERF estimates both volume and color for a point in space so by stepping through the volume at a certain resolution you can extract the mesh. The crazy thing is that although the NERF paper was only published in 2020 it's already old hat as it inspired a flood of papers which came after it. See https://github.com/yenchenlin/awesome-NeRF. One of the most interesting papers I think is https://alexyu.net/plenoxels/?s=09 which talks about building radiance fields with just classical optimization, i.e. no neural nets and which claims to be much faster to converge i.e. minutes vs days. Not used in any photogrammetry software yet as far as I know but potentially exciting for the future.

  • svox2

    Plenoxels: Radiance Fields without Neural Networks

  • Start with this: https://alexyu.net/plenoxels/ and their github: https://github.com/sxyu/svox2 It has everything, including calling COLMAP to build initial sparse point cloud.

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  • instant-ngp

    Instant neural graphics primitives: lightning fast NeRF and more

  • As an update on this one, research seems to be moving incredibly quickly and another method for really quick training of NERF networks has been released https://github.com/NVlabs/instant-ngp You need a beefy GPU to run this but the results are amazing (it can reconstruct shiny, and to an extent translucent surfaces) so I'm excited to see where this goes in the future.

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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