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.