Why we need this tool?

During the AI facial training process, the AI team often needs to export specific parts of the facial geometry from ground truth facial scan data, which is typically stored as an Alembic file or obj sequence.

In AI model training, only a portion of the facial model is selected and exported for training purposes. To simplify this workflow, I created a Blender script that allows users to select specific polygons on an Alembic file and export only those selected areas while preserving the Alembic animation.

The exported result is a single model with blendshape animation that accurately represents the same movements.