I am still continuing my "gamma" journey.
I tried 'log(Y)/log(X) vs. X', see here:
https://1drv.ms/u/s!AkD78CVR1NBqktln2ex2oIjHqgtK6w?e=hMWmpl
I'll spare you the details.
Digging into my old notes from a seminar I took on color, at MCSL, many
years ago, I found a procedure to estimate gamma through 'Linear
programming', using Solver in Excel*. It maybe an overkill... but it works.
For the purpose of my humble work, now, it will do. But I'll gladly continue
analyzing my data in terms of a power value as I still have things,
conceptually, I want to better understand about display Luminance.
Best / Roger
* Interestingly, I found many academic papers who use Gauss-Newton
non-linear least square method to estimate gamma.
-----Original Message-----
From: argyllcms-bounce@xxxxxxxxxxxxx <argyllcms-bounce@xxxxxxxxxxxxx> On
Behalf Of Graeme Gill
Sent: Tuesday, January 14, 2020 8:31 PM
To: argyllcms@xxxxxxxxxxxxx
Subject: [argyllcms] Re: Estimating Gamma
graxx@xxxxxxxxxxxx wrote:
It was suggested to me that, in order to estimate (monitor) gamma, Ifunction) graph in Log form. I don't get a "straight line" :
simply needed to take the "Log" of the both the Input and Output and
it would yield a straight line. But that's not quite what I'm finding,
in the following Excel sheet, see my measurement data and gamma (transfer