Tested with python 3.8.5 with Thonny in Windows 10 and Ubuntu 20.04.1
Source from:
https://towardsdatascience.com/real-time-face-recognition-an-end-to-end-project-b738bb0f7348 https://towardsdatascience.com/automatic-vision-object-tracking-347af1cc8a3b https://www.hackster.io/mjrobot/real-time-face-recognition-an-end-to-end-project-a10826 https://towardsdatascience.com/face-detection-in-2-minutes-using-opencv-python-90f89d7c0f81 https://opencv-python-tutroals.readthedocs.io/en/latest/py_tutorials/py_objdetect/py_face_detection/py_face_detection.html
All codes was fine tune and error fixed.
1.) camera_test.py 2.) faceDetection.py 3.) faceEyeDetection.py 4.) picsFaceDetection.py