Paper with mobile phone SSFs

[paolodepetrillo]

In this paper the researchers measured 20 RAW-capable phone cameras with a monochromator:

Tominaga, S.; Nishi, S.; Ohtera, R. Measurement and Estimation of Spectral Sensitivity Functions for Mobile Phone Cameras. Sensors 2021, 21, 4985. https://doi.org/10.3390/s21154985

The home page of the site where the SSFs from the paper were published, http://ohlab.kic.ac.jp/, appears to be down, but with a google search for site:ohlab.kic.ac.jp a few of the xls files show up. It may be worthwhile to contact the authors to get the whole set to include in this repo.

[butcherg]

I got around to downloading all of them from http://ohlab.kic.ac.jp/mobilespec_database.html. Let me think about it for a bit, not sure I want to treat them the same as spectra for "regular" cameras...

[paolodepetrillo]

This might not be worthwhile because of color shading - the spectral sensitivity can vary from the center of the image sensor to the edges, and might even vary from one module to another because of manufacturing variation.

The problem is described in section 5.3 of this thesis:
https://aaltodoc.aalto.fi/bitstream/handle/123456789/20832/master_Vuorinen_Samuli_2016.pdf?sequence=1&isAllowed=y