The following has just been added the Advanced Operation page, the User Patch Set section.

Due to the open & flexible nature of ColourSpace's Colour Engine there are few specific requirements for user defined patch sets, and there are some tricks that can be employed to help with difficult calibrations.

An example is generating patch sets that have a greater focus on the calibration grey scale.

Fairly obviously, adding in more grey scale patches can enhance the grey scale result, as can using the downloadable Optimised Patch Sets from Customer Downloads which include what are defined as Tube based patch sets, with a greater number of grey scale patches, including the immediate surrounding patches in a tube around the grey scale.

However, when looking to enhance grey scale accuracy the opposite can also work, by having LESS patches around the grey scale patches. This works because within ColourSpace's colour engine ALL COLOURS are treated equally. There really is no such thing a as grey scale!

As a consequence, isolating the grey scale patches from their immediate neighbouring patches can focus the colour engine into effectively treating the grey scale more independently from the surrounding volumetric colour patches.

Removing such near grey patches from a patch set is relatively easy using something like Excel.

When this approach is combined with a Focused Patch Set the results can be even more impressive on difficult to calibrate displays.

Steve

Great information Steve. On a related note, how many profile patches can the ColourSpace engine handle without ignoring or skipping patches during a LUT creation. Specifically, can it process all patches exceeding 9,261patches (21^3)?

There is actually no numerical limit on the number patches that can be processed.
But the more measurements in a profile, the slower the processing, especially on a low-end PC.
For example, if you perform a Quick Profile with a 42 step grey scale, and the associated ENV. Variable has been set to 42, or greater, the permuted cube size would be 42^3, so equivalent to 74,088 patches - and that works (very slowly on a low-end PC).

I've never tried an actual 42^3 profile though, as with 74,088 measurements, that would take a rather long time to measure...

So a full 21^3 patch set is no problem at all.

There are algorithms built into the colour engine that will 'filter out' invalid patches that would otherwise cause issues with the LUT - artefacts.
But that is not a limit on the number of patch measurement that can be processed.

There is a also an ENV. Variable that sets the max cores ColourSpace uses, just so you know..

Steve