December 27


Introduction to PyTorch3D

Understanding 3D plays a vital role in advancing the AI’s ability to better understand and work in the real world. This includes improvement of virtual reality experiences, navigating physical space in robotics, and also recognizing obstructs objects in 2D. However, 3D transformations have been limited due to insufficient resources and tools to support the neural network complexities.

Taking the next step in deep learning and addressing these issues, Facebook AI research rolled out PyTorch3D. This is a library that imparts deep learning with elements for 3D computer vision research.

Key characteristics of PyTorch3D

• It meshes a data structure for manipulating and storing 3D objects.
• It has the support of CUDA so it can use GPUs for acceleration.
• Compared to the existing Python 3D plot, the new PyTorch3D can handle small batches of heterogeneous data.
• All of the PyTorch3D operators are applied using PyTorch tensors.
• It comes with efficient operations on triangle meshes (a type of polygon mesh widely used in computer graphics) like graph convolution, project transformations, and so others with miscellaneous mesh renderers.

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Uses of PyTorch3D

With the Python 3D plot, Facebook is open-sourcing Mesh-RCNN that helps to detect objects in reality and predicts the complete 3D shape of every object detected. PyTorch3D is useful in several industrial deep learning applications in the following ways:

• It assists autonomous vehicles to understand the position of surrounding objects
• It provides a set of loss functions and 3D operators that are differentiable and fast, which enables researchers to import these functions into present state-of-art systems of deep learning right away.
• Researchers can leverage PyTorch3D for a variety of 3D transformations and deep learning research – be it 3D reasoning, bundle adjustment, or 3D reconstruction. .
• It can be used to drive the progress of the 3D and deep learning intersection with heterogeneous batching capabilities, optimized and efficient operators, and a modular rendering API to equip engineers and researchers with a toolkit and to successfully implement research with complex 3D inputs.

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Installation of PyTorch3D

One needs to have PyTorch for the installation of PyTorch3D as it works above PyTorch. The commands provided below can be used to install PyTorch.
conda create -n PyTorch3d python=3.6
conda activate PyTorch3d
conda install -c PyTorch PyTorch torchvision cudatoolkit=10.0
conda install -c conda-forge -c fvcore fvcore
After this step, one can use either of the commands from two domains provided below to install PyTorch3D.


pip install ‘git+’

(add –user if you don’t have permission)


conda install PyTorch3d -c PyTorch3d

Tutorials to use

To get started with this technology there are a few notebooks on the following topics provided by Facebook:

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• Bundle adjustment
• Camera position optimization
• Render textured meshes
• Deform a sphere mesh to dolphin

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