How to find the wavelength from a given photo?

I got a picture like on the link below. and I wish to have the different wavelength i have the reference spectra. https://en.wikipedia.org/wiki/Color#/media/File:16777216colors.png. thanks for your help.

Answer 1

[Amit Doshi]

Hello Jean,

You can use 'imgaborfilt' function and apply Gabor filter.

Refer the below link:

https://www.mathworks.com/help/images/ref/imgaborfilt.html?searchHighlight=wavelength&s_tid=doc_srchtitle

[Jean Paul Noukimi]

THanks for your reply. Mr Amit , I check it ut i dont think it will really help me to archieved my goal. I thought of Convertin RGB to spractra line. that is i have an image and from that image I get spectra line. do u any idea?

[Jean Paul Noukimi]

does the gombo filter returns the frequency? how do i differentate between the frequency