Xrite Color Profiles ?

Started 10 months ago | Discussions thread
Jack Hogan Veteran Member • Posts: 8,008
Pinv and the Normal Equation

Xasan wrote:

Iliah Borg wrote:

Xasan wrote:

Right! Thank you, I missed that.

I don't know enough about pinv to undestand why

4. With pinv,

M0 = pinv(raw) * xyzRef;


Try seeding with

M0 = xyzRef' * pinv(raw');

should give the same result as the standard form of the Normal Equation referenced in the original code

M0 = pinv(raw' * raw) * raw' * xyzRef;

[or equivalently for speed in Matlab/Octave: M0 = (raw' * raw) \ raw' * xyzRef]

- but neither seems to give equivalent results.


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