Mesh Decimation in Augmented Reality: What You Need to Know

Mesh decimation is a process that optimizes 3D models to make them lighter and faster to load. This is a critical step in preparing 3D models for use in augmented reality (AR). In this article, we’ll explain what mesh decimation is, how it works and how it can improve the performance of your AR applications.

 What is mesh decimation?

You may have heard the term “mesh decimation” before, but what does it actually mean? Simply put, mesh decimation is a method of 3D model optimization that simplifies images in order to shrink the file size. This is important when publishing 3D models online, as larger file sizes can lead to longer load times and compatibility issues

Mesh decimation is done by analyzing the mesh and identifying areas that can be simplified without affecting the overall look or function of the model. Mesh decimation can be used to reduce the file size of 3D models, making them more manageable and easier to load on mobile devices and other platforms. It can also be used to meet the requirements of certain publishing platforms, such as Facebook or Instagram, which have limits on the file size of 3D models.

 Mesh decimation size matters

Mesh decimation is used to reduce the number of polygons in a 3D model while preserving its shape and detail. The level of mesh decimation can be adjusted to meet the requirements of various platforms. For example, a high-resolution 3D model intended for print publication may require a higher level of mesh decimation than one that is being used for an online game.

 When and why to use mesh decimation

Mesh decimation is a term you’ll often hear when discussing 3D models. It’s a method of optimizing an image by simplifying it, which reduces the file size and makes it easier to load on various platforms. So when should you use mesh decimation?

Generally, it’s recommended for 3D models that will be used in augmented reality (AR). That’s because AR applications require significantly lower file sizes than other platforms, like video games or 3D printing. By using mesh decimation, you can make sure your 3D models are compatible with all AR applications.

How to avoid common mistakes when using mesh decimation

Mesh decimation is a powerful optimization tool, but it’s important to understand how to use it correctly in order to avoid common mistakes. Here are a few tips:

  • Always use a lossy algorithm: This will ensure that the file size is reduced as much as possible.
  • Don’t reduce the polygon count too much: This can lead to poor-quality models that don’t render correctly.
  • Avoid collapsing high-resolution faces: This can create visible artifacts in the model.
  • Optimize each model separately: Don’t try to optimize an entire collection of models at once.


Mesh decimation is a powerful optimization tool that can help improve the performance of 3D models. By reducing the number of polygons in a model, you can often greatly reduce the file size while still maintaining quality. However, it’s important to use caution when decimating meshes, as too much simplification can often result in ugly or unusable models. With the right tools and knowledge, however, mesh decimation can be an easy and effective way to optimize your 3D models for augmented reality and various other platforms.