# eVision

> eVision 26.10.0-beta.2.dev documentation


2026, Euresys

## Pages in this subsection

- [Regions and ROIs](index.html.md): This section shows how to use regions and ROIs throughout **eVision**.
- [Regions Of Interest (ROI)](regions_of_interest.html.md): Explains eVision ROI properties: width, height, origin, attachment to a parent image, hierarchical nesting, cropping, and resizing.
- [Arbitrarily Shaped ROI (ERegion)](arbitrarily_shaped_roi__eregion_.html.md): Explains ERegion, eVision's arbitrarily shaped region of interest: how to create, combine, transform, and draw regions beyond rectangular ROIs.
- [Flexible Masks](flexible_masks.html.md): Compares rectangular ROIs with flexible masks and explains how EasyImage and EasyObject use BW8 masks to restrict processing to non-rectangular areas.

## Optional

- [Top-level llms.txt](../../../llms.txt): Complete documentation index.