Neural Reconstruction and 3D Gaussian Splatting with NVIDIA Omniverse NuRec

NVIDIA Omniverse™ NuRec is a set of accelerated 3D Gaussian splatting libraries that ingest real sensor data to reconstruct and render interactive simulation in OpenUSD. NuRec libraries are integrated with NVIDIA Isaac Sim™ for robotics testing, and NVIDIA AlpaSim and CARLA open source simulator for autonomous driving development.

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How Omniverse NuRec Works: Real-Time 3D Reconstruction and Rendering

Omniverse NuRec reconstructs camera or lidar data of a given environment and packages the result as a USD scene, including metadata such as trajectories. The open NCore data standard provides a consistent way to represent data inputs to reconstruction workflows. Using open-source gsplat Gaussian splatting rendering libraries, NuRec then renders the scene interactively inside simulation frameworks like Isaac Sim or AlpaSim. 

Rendering is usually done by connecting the simulator/runtime to the NuRec service via a gRPC API. Developers can then further enhance the reconstruction using generative models such as Fixer, which fills in artifacts or adjusts blurs, or Asset Harvester, which removes assets for use in other environments.


Flow diagram illustrating how Omniverse NuRec uses real sensor data for 3D reconstruction and interactive simulation rendering via Gaussian Splatting libraries.

Enhance Neural Reconstructions with Fixer

Address artifacts and adjust blurs in reconstructed scenes using Fixer, built on NVIDIA Cosmos™.

Build Asset Libraries with Harvester for USD Scenes

Easily remove objects in a reconstruction for use in other scenes with Asset Harvester.

Reconstruct a 3D Scene Using Your Smartphone

Learn how to quickly turn smartphone captures into an interactive simulation environment in Isaac Sim using Omniverse NuRec.

Simulate Real-World Sensor Data in CARLA

Follow this step-by-step tutorial to turn real-world scenes into autonomous vehicle simulation in CARLA.


Get Started With Omniverse NuRec for Accelerated 3D Reconstruction

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Omniverse NuRec on NGC for Reconstruction Pipelnes

Access containers, libraries, and models to start your reconstruction pipelines.

Download Omniverse NuRec
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Explore NCore Data Standard for Sensor Data Reconstruction

Reconstruct sensor data using consistent data representations.

Access NCore Data Standard 
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Physical AI Open Datasets for Reconstructed Data

Kick-start your rendering pipelines with reconstructed data, openly available on the NVIDIA Physical AI Open Datasets collection.

Explore Open Datasets

Starter Kits

Realistic Physics Simulation for Physical AI

Model the physical behavior of objects and systems foundational to physical AI. 

Isaac Sim can accurately simulate rigid body and vehicle dynamics, multi-joint articulation, SDF colliders, and more.

Scalable Synthetic Data Generation for AI Model Training

Bootstrap AI model training with synthetic data.

Generate training data by randomizing attributes like lighting, reflection, color, and position of scene and assets.


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For more detailed information on ethical considerations for this model, please see the Model Card++ Explainability, Bias, Safety & Security, and Privacy Subcards. Please report security vulnerabilities or NVIDIA AI Concerns here.

Download NVIDIA Omniverse for NuRec for 3D Reconstruction

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