15. About ROI

While editing a project, drawing an ROI is often required for the base image and most tools. This chapter introduces the supported ROIs and how to draw an ROI.
15.1 ROI Types
The ROI types include template area, detection area, and shielded area drawn inside the template area and detection area.
For different ROI types, the supported number of ROIs and shapes vary.

ROI Type	Shape	Numbers	Example
Template Area	rectangle, polygon	Multiple
Detection Area	rectangle, single line, dual-lines, point + line, polygon, circle	Other Tools: only one Code Recognition Tool: up to 8
Shielded Area	Template Area: rectangle, polygon Detection Area: polygon	Multiple

Note
● By default, the detection area is the whole image.
● When drawing multiple ROIs, digit icons indicating the number of ROIs will be displayed
in the down-right corner of the drawing area.
● Some tools do not support drawing an ROI. The supported shapes are as follows.

15.2 How to draw an ROI?
For different shapes, the drawing steps vary