FindContoursNode

Overview

Finds contours in a binary/grayscale image and draws them on an output image.

Inputs

• Input Image (GrayScaleImage)

• Draw On Image (GrayScaleImage)

• Mode (Int)

• Method (Int)

• Min Area (Int)

• Draw Color R (Int)

• Draw Color G (Int)

• Draw Color B (Int)

• Thickness (Int)

Parameters

• Mode: default cv2.RETR_EXTERNAL. OpenCV contour retrieval mode

• Method: default cv2.CHAIN_APPROX_SIMPLE. OpenCV contour approximation method

• Min Area: min 0, max 10000, default 100. Filter out small contours by area

• Draw Color R/G/B: defaults R=0, G=255, B=0. RGB color used to draw contours

• Thickness: min -1, max 50, default 2. Line thickness; -1 fills the contour

Outputs

• Result Image (ColorImage)

• Contour Count (Int)

• Contours (Contours)

Example

Use Min Area=200 to ignore small particles.