# Basic Operations

This section presents the basic components of **eVision** which are used throughout the API.

How to use images in **eVision**.

How to limit the scope of processing using regions and ROIs in **eVision**.

How to handle image alignment using frames in **eVision**.

How to use common **eVision** data types: vectors and geometrical shapes.

How to handle errors thrown from **eVision** processes.

Utility functions for **eVision**.