Skip to content

imasmart/ima-potree

Repository files navigation

About

PotreeConverter generates an octree LOD structure for streaming and real-time rendering of massive point clouds. The results can be viewed in web browsers with Potree or as a desktop application with PotreeDesktop.

Version 2.0 is a complete rewrite with following differences over the previous version 1.7:

  • About 10 to 50 times faster than PotreeConverter 1.7 on SSDs.
  • Produces a total of 3 files instead of thousands to tens of millions of files. The reduction of the number of files improves file system operations such as copy, delete and upload to servers from hours and days to seconds and minutes.
  • Better support for standard LAS attributes and arbitrary extra attributes. Full support (e.g. int64 and uint64) in development.
  • Optional compression is not yet available in the new converter but on the roadmap for a future update.

Altough the converter made a major step to version 2.0, the format it produces is also supported by Potree 1.7. The Potree viewer is scheduled to make the major step to version 2.0 in 2021, with a rewrite in WebGPU.

Publications

Getting Started

  1. Download windows binaries or
    • Download source code
    • Install CMake 3.16 or later
    • Create and jump into folder "build"
      mkdir build
      cd build
      
    • run
      cmake ../
      
    • On linux, run: make
    • On windows, open Visual Studio 2019 Project ./Converter/Converter.sln and compile it in release mode
  2. run PotreeConverter.exe <input> -o <outputDir>
    • Optionally specify the sampling strategy:
    • Poisson-disk sampling (default): PotreeConverter.exe <input> -o <outputDir> -m poisson
    • Random sampling: PotreeConverter.exe <input> -o <outputDir> -m random

In Potree, modify one of the examples with following load command:

let url = "../pointclouds/D/temp/test/metadata.json";
Potree.loadPointCloud(url).then(e => {
	let pointcloud = e.pointcloud;
	let material = pointcloud.material;

	material.activeAttributeName = "rgba";
	material.minSize = 2;
	material.pointSizeType = Potree.PointSizeType.ADAPTIVE;

	viewer.scene.addPointCloud(pointcloud);
	viewer.fitToScreen();
});

Alternatives

PotreeConverter 2.0 produces a very different format than previous iterations. If you find issues, you can still try previous converters or alternatives:

PotreeConverter 2.0 PotreeConverter 1.7 Entwine
license free, BSD 2-clause free, BSD 2-clause free, LGPL
#generated files 3 files total 1 per node 1 per node
compression none (TODO) LAZ (optional) LAZ

Performance comparison (Ryzen 2700, NVMe SSD):

License

PotreeConverter is available under the BSD 2-clause license.

About

Potree fork but with imasmart charts

Resources

License

Stars

Watchers

Forks

Releases

No releases published

Sponsor this project

 

Packages

No packages published