A virtual pad over which one can draw lines, figures by using april tags.
- Using opencv camera detects the april tag
- IIts find its centroid.
- Its center was used as marker
- Another april tag was used as track bar adjuster (for color changing and size of marker)
- Priortizing of april tags.
- Creating virtual track bars for color handelling by another april tag.
- https://april.eecs.umich.edu/software/apriltag
- https://pypi.org/project/apriltag/
- https://docs.opencv.org/3.4/d5/dae/tutorial_aruco_detection.html
video link: https://drive.google.com/open?id=18uMiJgNNsJDgV9jhHEDbBGcM1lYU7KAE