chrysalis_cloud_face_landmarks_main.py

def validate_param(param_name):
    """
    Validating OS environment variables
    """
    if param_name not in os.environ:
        raise ValueError("missing environment variable " + param_name)
    return os.environ[param_name]
    
if __name__ == "__main__":
    port = validate_param('chrys_port')
    host = validate_param('chrys_host')
    password = validate_param('chrys_password')
    cert_path = validate_param('chrys_cert')

    chrys = chrysalis.Connect(host=host, port=port, password=password, ssl_ca_cert=cert_path)

    while True:
        img = chrys.VideoLatestImage()
        if img is not None:
            frame = img.data
            frame = add_face_markers(frame)

            cv2.imshow("facemarkers", frame)
            if cv2.waitKey(1) & 0xFF == ord('q'):
                break