Polygon Crop

Overview

This node crops an input image to the bounding box of a specified polygon. It extracts a specific region defined by geometric coordinates for further processing.

Use Polygon Crop when:

• You need to isolate an object within a complex shape.
• You want to reduce image size to a specific area of interest defined by a polygon.

⚠️ Warning

The resulting crop is always rectangular, corresponding to the smallest bounding box that contains the entire polygon.

Inputs

Name	Type	Description
image	image	The original image to be cropped.
polygon	polygon	The polygon defining the crop region.

Outputs

Name	Type	Description
cropped_image	image	The resulting image after cropping.

Parameters

This node does not have any configuration parameters.

Example

Isolate a detected object

A system detects a PCB desk and generates a polygon around it. This node crops the full frame to just the PCB desk's area.

Configuration:

• This node has no internal configuration parameters.

Result: The output image contains only the PCB desk.

Related links

Reference:

• Crop Image — basic rectangular cropping based on the node configuration
• Apply Mask — masking image areas