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Convert .ply to .splat #28

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imbahhc opened this issue Oct 27, 2023 · 5 comments
Closed

Convert .ply to .splat #28

imbahhc opened this issue Oct 27, 2023 · 5 comments

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@imbahhc
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imbahhc commented Oct 27, 2023

Dear author,
I'm a new user for java. Could you please tell me where to put the code you provide to convert .ply file to .splat file? Thank you.
Best regards,
hhc
@mkkellogg
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mkkellogg commented Oct 27, 2023 •
edited
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That's a very good question, right now I just run the code from inside a web page. I should really make a node script to do the conversion -- I'll work on that :) For now, just create a web page that looks like this:

<!DOCTYPE html>
<html lang="en">
  <head>
    <script type="importmap">
      {
          "imports": {
              "three": "./lib/three.module.js",
              "gaussian-splats-3d": "./lib/gaussian-splat-3d.module.js"
          }
      }
    </script>
  </head>
  <body>
    <script type="module">
      import * as GaussianSplats3D from 'gaussian-splats-3d';
      const compressionLevel = 1;
      const splatAlphaRemovalThreshold = 10;
      const plyLoader = new GaussianSplats3D.PlyLoader();
      plyLoader.loadFromFile('<path to .ply file>', compressionLevel, splatAlphaRemovalThreshold)
      .then((splatBuffer) => {
          new GaussianSplats3D.SplatLoader(splatBuffer).saveToFile('converted_file.splat');
      });
    </script>
  </body>
</html>

If you put the above web page in the build/demo folder it should load correctly.

@mkkellogg
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Not sure if you're still interested, but the latest version has a UI for converting .ply files to .splat at http://localhost:8080/index.html

@softyoda
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softyoda commented Nov 1, 2023

Hi quick question relating to .splat format.

Are you still using same .spat format than other integration (aframe/antimatter)?

In your readme you say "currently only compatible with this viewer", does that mean your .splat format is more optimized, and you integrate ways to reduce the height of a scene using Aras optimization such as chunking / texture / clustering / spherical-harmonics lower order precision to have less bit per splat ?

@mkkellogg
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Yes I have implemented some of my own optimizations to reduce the size of the .splat file. Currently I have implemented chunking to a small extent as well as the option to store position/scale/rotation values as 16-bit instead of 32-bit. Optimizing the .splat format is still an ongoing project; I know there are still several things I can do. I have read through Aras's blog on reducing file size and I will hopefully get around to implementing more of those ideas soon.

@softyoda softyoda mentioned this issue Nov 5, 2023
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@mkkellogg
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Closing for now in favor of the .splat format discussions in: universal format discussion.

FWIW the latest version of this repo supports directly importing the .splat files that the antimatter15 project uses.

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@mkkellogg @softyoda @imbahhc