if got photos of different oxidised copper and im looking for a way to measure the oxidation-colours to create a oxidation ranking for copper.
Right now i use the Plugin "RGB Measure Macro" and get these rgb results (see the screenshot at the end of the post). I could use the mean-Value of Red, Green and Blue from the plugin and predefine a min-max-range for each Oxidation-level:
For example: For Oxidation-Level 0 the mean-colour-values have to be inbetween:
Red 200-210, Green 130-140, Blue 110-120
For Oxidation-Level 1 the mean-colour-values have to be in between:
Red 120-130, Green 80-90, Blue 70-80
and so on…
Do you have hints for a better plugin to use or a better way to create measurable oxidation-colour-levels?