Yes, there is a standard model for blue tits (and various other species) for both rods and cones. The birds have 4 cone types, as ours plus U.V. sensitive. The models are in the attached papers!
Fair question!
I am a PhD. student learning my trade so to speak! I guess as in all research, the end goal is to publish! I am a biologist, working with iridescent insects (see some other posts). I would like to model my light spectro. data with their potential predators! i.e. birds and...
Hi,
No, I have not done this before or anything like it. I do not have a clue where to start!
I have my Photospec. data that is it. I just don't get the concept of running a model or where to get the numbers to put into an said model. Just imagine someone with zero confidence in maths and...
The model is supposed to tell me what the JNDs are for my two treatments, from this I can tell if a bird can discriminate between two visual signals.
It will be and has been used for putting spectrophotometer data into an ecologically relative context.
My personal level? not great but I need...
OK so I am not sure if this should be on a physics forum, a maths forum or a biology forum. All I know is I am stuck.
A little back ground: Researchers have modeled how various animals can see depending on their visual sensor cells, namely cones (colours vision) and rods (luminance)...
Dear ehild, sorry I never thanked you earlier, I was distracted by yet another set of issues from the same data set and have been working on that before I could consider smoothing. I thought it would take a lot less time to sort my problem but unfortunately not.
Anyway, thank you very much for...
Hi there again, and thank you for the interest and replies.
I am attaching some data so you can see the problem, I am not sure if it is the exact same data set as I have a lot of them, but they all have the same noise and peaks.
units are % reflection and nm.
Kind Regards
Sam
Dear all,
Thank you for the replies, if anyone is interested further in the quantification of iridescence in a biological field then please refer to the attached paper. Does anyone know if there is a process either an R function or something where I can remove this noise seen in the graph...
Hey, thank you for your reply, would the specular highlight not be the seen at the same wavelengths as the actual color of the surface, in this case blue or green?
Dear PH,
Recently I have been trying to determine if a surface is iridescence or not. The most quantitative method to achieve this is to find the maximum reflective peak, this is also highly repeatable and worked well.
The idea is to move a sample at all angles of possible viewing geometry...
Hence no difference when the light is on or off! ;)
I'll let you know how it goes if you are interested. Hopefully the method will work tomorrow :)
Thanks again
Just tried, there seems to b little to no effect. However, to guard against it I have managed to find a ceramic bulb emitting only heat. It is used for terrariums, I will use the ambient light, two diffused strip lights to guard against reflection.
Just a side note, when I point the gun at the...