# Signed Distance Functions (SDF)

Learn what a signed distance function is and how to make your own in PyTorch.

## The signed distance function

The signed distance function (SDF) is a lesser-known but elegant 3D data representation. While PyTorch3D doesn’t directly implement signed distance functions, they’re becoming more popular due to a few interesting properties.

### What is a signed distance function?

A **signed distance function** **(SDF)**, is a mathematical expression of a 3D scene that computes the distance

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