Hello everyone!
I've made further progress with the helicopter code, and the processing sketch. Linear correction will be integrated into the next version release.
I now have video working under linux, the display is now a video overlay. Also the display has been re-arranged considerably to include an artificial horizon (which is very accurate) and some pretty little piecharts to illustrate the throttle and tail rotor pitch.
http://www.eclipseaudioservices.co.uk/extras/artificialhorizon.html
The Xbox 360 controller integration is going well - this will be included in the next release.
Thanks again to everyone who is testing the code for me - it's certainly speeding the process up.
Ed 