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3D reconstruction from synthetic datasets: COLMAP and SuGaR

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3D Reconstruction from Synthetic Datasets

This project was developed as part of an internship at the University of Trento and focuses on 3D reconstruction from synthetic datasets using two main techniques: COLMAP and SuGaR.

Table of Contents

  1. Project Overview
  2. Dataset Preparation
  3. Methods Used
  4. Results and Analysis
  5. Dataset Information
  6. Visualization of Results

Project Overview

The goal of the project is to perform 3D reconstruction from synthetic datasets using two methods:

  • COLMAP: A tool that uses Structure-from-Motion (SfM) and Multi-View Stereo (MVS) to generate 3D models.
  • SuGaR: A newer method based on 3D Gaussian Splatting.

The project evaluates these two methods in terms of performance, accuracy, and the quality of the resulting models.


Dataset Preparation

Nine synthetic datasets were generated using the nerf-dataset-creator-plugin. The datasets include both outdoor (5) and indoor (4) scenes.


Methods Used

COLMAP

  • COLMAP is a photogrammetry software used to perform 3D reconstruction. It combines Structure-from-Motion (SfM) with Multi-View Stereo (MVS) to create accurate point clouds and mesh models.

SuGaR

  • SuGaR is a newer approach for 3D reconstruction that utilizes 3D Gaussian Splatting. While visually compelling, SuGaR is evaluated in this project for its performance compared to the traditional COLMAP method.

Results and Analysis

The project compares COLMAP and SuGaR in terms of:

  • Accuracy of the resulting 3D models
  • Execution speed
  • Handling of flat and low-detail surfaces

The comparison is performed using CloudCompare for visual and quantitative evaluation of the generated models.


Dataset Information

Info Value
Number of datasets 9
Dataset Type Indoor/Outdoor
File Size ~1GB per model
Images per dataset 250
Format PNG
Resolution 800x800

Visualization of Results

You can view the 3D reconstruction results on Google Drive at the following link:

View Results

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3D reconstruction from synthetic datasets: COLMAP and SuGaR

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