Hello, I'm trying to get the ratio between two lines from a scan of beewings (veins).
From the cubital index between line a and b you can determine which honey bee subspecies you're dealing with.
I can find all the beewings in the picture, but I'm not sure to what the general approach should be to get the length of line a and b. The absolute length is not important, just the ratio between a and b. I'm not looking for someone to provide the exact solution, just would be very helpful if someone could point me into a direction of a general approach / what to read up on.
Thanks!