Simple Gaussian Splatting

What is this?

For learning purposes, we offer a set of tools and documentation to study 3D Gaussian Splatting. We also plan to provide an unofficial implementation of the paper 3D Gaussian Splatting for Real-Time Radiance Field Rendering.

Overview

• Detailed documentation to demonstrate the mathematical principles of 3D Gaussian Splatting
  • Documentation for forward (render image)
  • Documentation for backward (training)

• Based on our documentation, re-implement 3D Gaussian Splatting.

  • Forward on CPU
  • Forward on GPU
  • Backward on CPU
  • Backward on GPU

• Provide tools for learning 3D Gaussian Splatting.

  • A simple viewer based on pyqtgraph for showing 3D Gaussian data (trained model).
  • A demo showing how spherical harmonics work.

Requirements

pip3 install -r requirements.txt
pip install pygausplat/.

Forward process (render image)

Given camera information, render 3D Gaussian data onto the 2D image using Python.

CPU version.

python3 forword_cpu.py --ply='THE_PATH_OF_YOUR_TRAINED_PLY_FILE'

GPU version.

python3 forword_gpu.py --ply='THE_PATH_OF_YOUR_TRAINED_PLY_FILE'

3D Gaussian Viewer

A fast 3D Gaussian splatting viewer for showing 3D Gaussian data.

python3 gaussian_viewer.py --ply='THE_PATH_OF_YOUR_TRAINED_PLY_FILE'

Spherical harmonics demo

A demo showing how spherical harmonics work.

python3 sh_demo.py

"The ground truth Earth image is modified from URL. By Solar System Scope. Licensed under CC-BY-4.0"