I am using pictures taking with a camera modified with infragram's NDVI lense (red filter I think) to derive NDVI as: (R-B)/(R+B). I'd like to know if I can calculate the average NDVI in a picture, or a selected area in a picture using infragram's sandbox. Should use a different software for that?
We're developing a new system based on Infragram, which is more systematic, and can output things like averages, etc. We're testing this out now and it's a prototype, but you should be able to use this to calculate NDVI from an image, then average the result: