A high-level diagram can be found in the image below:
The Angular application can be found in the folder test-image-viewer.
The nginx configuration can be found in the folder cloud-server/nginx-config
The proxy server is in the cloud-server directory.
The cloud image processor is in the folder cloud2.
The outer comms is in the folder drone-node.
Although not shown in this image, the drone-python folder contains
the program for controlling the drone engine.
Altough not shown in this image, the folder udp-packer contains an
npm module for packing and unpacking images.
The folders face-recognition-opencv, face_detection, person-detector
prototypes for person detection.