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

Inputs
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- 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
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- 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
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- Result Image (ColorImage)
- Contour Count (Int)
- Contours (Contours)

Example
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Use Min Area=200 to ignore small particles.