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Great resource here, samples in 3 languages: C++, Java, Python.

For help on OpenCV:

$ python
Python 3.7.0 (default, Jun 28 2018, 07:39:16) 
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
>>> help(cv2)

>>>, Basics. Take a snapshot and save it., Video test.

With image size setting (width & height)., Take snapshot, display info., Contour detection


 two, Color detection, get started, Color detection, Act 2, Hough algorithms, getting started, Hough algorithms, WIP, Hough algorithms, Non Probabilistic, Hough algorithms, Circle Detection, Path detection, contours approach, Path detection, pixel approach, not bad!

On only one static image. Will implement camera later., Path detection, pixel approach, with camera

Like, with a camera.

Path detection with a camera
Path detection

The path is plotted on the image, the courses are displayed in the background terminal. Those information would be sufficient to drive the robot carrying the camera.

Also check this out..., Object detection. and this

Following a path

Resources at

Face recognition

OpenCV Image manipulation

Very good paper:

  • ROI: Region Of Interest
  • PID algorithm: proportional-integral-derivative
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