Update readme

README.md

@@ -2,17 +2,32 @@
 
 This monorepo contains all elements of the FTL software system.
 
+* Components : Modular components compiled as static libs
   * net : A p2p messaging library for C++ and JavaScript
-* vision : Stereo vision node in p2p network
-* reconstruct : Performs scene reconstruction from vision nodes
-* renderer : Produce video or live feeds from scene representation
+  * rgbd-sources : Abstraction and implementations of different RGB-Depth data sources
+  * renderers : A collection of visualisation tools, including for RGB-D and point clouds
+  * scene-sources : Abstraction and implementations of 3D scene data sources
+  * common : Utility and configuration tools
+* Applications : Executable apps for the different node machines
+  * vision : Stereo vision node in p2p network, generates an RGB-Depth net stream
+  * reconstruct : Performs scene reconstruction from synchronised RGB-Depth sources
 * front-end : Client side FTL code, both web and native
 * web-service : A web backend service provider acting as a form of proxy
 * www : FTL Website
 
-The architecture is a mix of C++ and NodeJS largely communicating over a p2p
+The architecture is a mix of C++ and NodeJS largely communicating over a p2p RPC
 network protocol.
 
+Overall, initial vision machines capture video sources and generate colour and
+depth images. These images are then streamed from all such sources to a single
+machine to reconstruct the scene in 3D. The reconstructed scene is then further
+compressed and streamed to other machines for additional analysis, processing or
+visualisation.
+
+The whole system is configured using JSON config files, examples of which can be
+found in the `config` folder. The intention is that a web interface will
+eventually enable this configuration to take place online.
+
 ## Build
 Use the following commands in the root repository directory to build:
 
@@ -29,5 +44,5 @@ to configure the project.
 You will need to have OpenCV and glog installed. CUDA and LibSGM are optional
 but recommended also. OpenCV should have cuda stereo modules compiled, along
 with the viz module if local point cloud display is required. These are contrib
-modules.
+modules. PCL is also required to build the reconstruction components and app.