Data augmentation Blender add-on

Blender

This addon is built and tested for Blender 3.0.0. Blender can be downloaded from: https://www.blender.org/download/

Installation

This add-on can be installed two ways:

1. Using Blender UI

 1. Download `BlenderDataAugmentation.zip` from release and don't unpack it
 2. Launch Blender
 3. Go to: Edit > Preferences > Add-ons > Install..
 4. In the file viewer window navigate to downloaded archive and press Install Add-on
 5. Check box next to Object: Data Augmentation

2. By moving files

 1. Download `BlenderDataAugmentation.zip` from release and unpack it
 2. Move the whole folder to Blender addon directory (see table below)
 3. Go to:Edit > Preferences > Add-ons
 4. Search for Data Augmentation
 5. Check box next to Object: Data Augmentation

System	Add-on directory
MacOs	/Users/$USER/Library/Application Support/Blender/3.0/scripts/addons/
Windows	%USERPROFILE%\AppData\Roaming\Blender Foundation\Blender\3.0\scripts\addons\
Linux	$HOME/.config/blender/3.0/scripts/addons/

Overwiew

This add-on aim is to simplify the process of augmenting and generating synthetic data to be used in machine learning projects. In later stages of development, this whole process will be automated and accessible from a web interface.

This add-on supports augmenting 3D models by :

• transforms: position, rotation, and scale in a given range
• light conditions: strength, temperature, position, rotation, and jitter in a given range

It also supports boundinboxes generation for multiple classes and batch rendering. It is possible to add negative data, objects that will not be labeled while being visible on renders.

Apart from standard YOLO boundinbox labels, this add-on is capable of writing rotation values of objects in rotation matrix format.

There is also an option to output all values used for augmentation and generation as a single JSON file, that file can be also later loaded into the addon to repeat the augmentation process.

Use

This add-on to work requires a specific structure of the Blender file. A pre-made blender file can be found in assets directory. If runned on Linux it is recomennded to lauchn the Blender from terminal window. Detailed tutorial is aviable in docs directory.

Notice

^{BBox generation is based on https://blender.stackexchange.com/a/158236 by user juniorxsound, which is based on https://blender.stackexchange.com/a/7203 by user CodeManX}