The NoIR Raspberry Pi camera comes with a blue filter to do near infrared photography – the blue filter ices the visible red but passes near IR which records as red, apparently. NDVI (Normali…
So your new Pi NoIR has plopped through the letterbox, and you’ve unpacked it. There’s a little square of blue gel in there. What’s it for? If you’ve been reading our posts about why we developed an infrared camera board keenly, you’ll have noticed that we mentioned a lot of interest from botanists, who use …