Convert Region to ROI

Use this tool to convert regions to regions of interest (ROIs). If you connect a tool that returns more than one region, each region will be converted into a separate ROI and several ROIs will be returned as the result. This tool might be useful because not all MERLIC tools accept regions as an input parameter.

Find out more about the different parameter and result types in the topic Parameter and Result Types.

Parameters

Basic Parameters

Image:

This parameter represents the input image.

Region:

This parameter defines the region for the processing. The region must be delivered from a previous tool. Therefore, you have to connect the parameter with the respective result of a previous tool.

If you want to connect regions from more than one previous tool, you have to merge the regions first with the tool Merge Regions before connecting them to this tool.

ROI Type:

This parameter defines into what type of ROI your input region is converted. You can choose between all five ROI types that MERLIC provides. Per default, the input is converted into a circular ROI. If the shape of your input region does not match the selected ROI type, the ROI will be automatically fitted into the region.

Value	Description
circle	The region is fitted into a circular ROI.
paraxial rectangle	The region is fitted into an ROI in form of a paraxial rectangle.
rectangle	The region is fitted into a rectangular ROI.
point	A point in the center of the region is determined and returned as ROI.
segment	MERLIC internally uses a polygon that is fitted around the region and in which a segment is determined and returned as ROI.

Results

Basic Results

Extracted ROI:

This result returns the converted ROI. If multiple regions are provided, each of these regions is converted to an ROI of the selected type.

Tool State:

"Tool State" returns information about the state of the tool and thus can be used for error handling. For more information, see Tool State Result

Additional Results

Processing Time:

This result returns the duration of the most recent execution of the tool in milliseconds. The result is provided as additional result. Therefore, it is hidden by default but it can be displayed via the button beside the tool results. For more information see the section Processing Time in the tool reference overview.