3 ms·
> using a known light source and a large enough set of color swatches with known response curves? Inferring device parameters should just be solving some system
by dave_sullivan 10y ago
> using a known light source and a large enough set of color swatches with known response curves? Inferring device parameters should just be solving some system of equations given enough constraints, and if you overconstrain the system you also get an estimate of how much noise is in your parameters.
If that's true, and those constraints aren't terribly well understood, it would make for a good machine learning problem. Fwiw.
- smallnamespace 10y agoSorry I wasn't being clear -- the RGB camera response to each patch of a swatch should give (up to) 3 different constraints under normal lighting, plus another 3 by cycling through LED colors, so in theory you only need ceil((k+3) / 6) colors to estimate a k-variable camera response curve (the other 3 estimate your LED wavelengths).