mvhv

I think ink and mirrors are kind of fundamentally incompatible.

Probably closer to what you're thinking about would be putting a bunch of tiny bandpass filters infront of a mirror, but in that case you can ditch the mirror entirely and just point the camera through the filter array.

A filter array right on-top of the sensor is how (the vast majority) of) CMOS cameras distinguish colour anyway.

The second page is borderline incomprehensible, I'm not sure I would ever understand what it's trying to say if I didn't already know.

I believe "serverless" in this sense means "like AWS lambda". Theoretically you upload some small scripts and they're executed on-demand out of a big resource pool, rather than you paying for/running an entire server yourself.

It seems like a horrible way to build a system with any significant level of complexity, but idk maybe it makes sense for very rarely used and light routes?

This doesn't really seem like "hyperspectral imaging". I think the idea is having a reference colour chart of known emission characteristics and photographing it through a transparent substance gives you an idea of how much that substance attenuates each wavelength.

It's a cool trick if it works, but it seems very finicky and I guess would be limited to transparent/homogeneous liquids?