21-02-2020, 06:28 AM
This is a very interesting approach. Some considerations:
The raw images are rather 'pixelised', so when sampling the colours of individual pixels, one inherits quite a bit of noise. A necessary (I think) and somewhat laborious initial step is to average a small area of pixels in order to get a better estimate of the colour in RGB or Hue, Chroma, Lightness. Or one can use more modern / professional scales.
The paint was applied before the latest (re-)binding, but not all paint may have been applied at the same time. It is one of the many open questions. In fact, the type of analysis you are trying to do might shed some light into this....
The raw images are rather 'pixelised', so when sampling the colours of individual pixels, one inherits quite a bit of noise. A necessary (I think) and somewhat laborious initial step is to average a small area of pixels in order to get a better estimate of the colour in RGB or Hue, Chroma, Lightness. Or one can use more modern / professional scales.
The paint was applied before the latest (re-)binding, but not all paint may have been applied at the same time. It is one of the many open questions. In fact, the type of analysis you are trying to do might shed some light into this....