Hey

Has anyone been working with their data? it's a lot of it, and very systematic, but they use a different type of lens (full-frame fisheye) which I am not sure how to use in a running script.

I've adapted a script from: https://github.com/naturalis/Hemiphot

In my case i use raster package more and less matrices: https://github.com/nunocesarsa/LAI_R_Script

Link to an original NEON data example: https://s3.data.neonscience.org/neon-dhp-images/D01/2019/BART01/BART_041/overstory/D01_7446.NEF

My main problem is regarding how to adapt the calculations for "full-frame fisheye" such as they have in the "normal" fisheye". The regular procedure is to calculate LAI in function of 5 fractions of the image (aka gap fractions which are a ring of radius between Xº and Yº). But in full-frame fisheye, the same "circular" rule doesn't apply for the sensor (or does it?). I haven't found examples clearly explaining how they calculate on full frames (commonly, they use a software to do it for them).

In my code, I generate an intermediate calculation raster that is all the "zenith" angles of each cell and thats what i use to crete the gap fractions. But if this function that i am using to create the gap is improper, then all the rest is probably not working either.

Looking for ideas!

(And if i'm unclear, let me know, i'm tired so..).