Just some info about the upcoming Greyscale enhancement process; called as ''Augmented Data '; which helps reducing grey scale errors even further.
The Augmented data process enables the grey-scale information within a given profile to be 'augmented' with data from a totally different profile, effectively enabling the grey scale calibration to be altered and potentially improved.
For example, a relatively small Cube based profile, such as 10-Point Cube (1000 measured color points) could be used for a volumetric profile, and augmented with a 33 step Grey Only Quick Profile to enhance the grey scale accuracy.
The Augment process uses the LUT generated from the initial profile to pre-process the second 'Augmented' profile, enabling the Augmented Data to correct any inaccuracies in the original profile's grey scale, as well as enabling the use of a higher level of grey scale measurement granularity for enhanced accuracy.Note:
Although profiles of any type/size can be used as the Augment Data, a Grey Only Quick Profile is the most obvious to use. Additionally, using too many steps within the Grey Only profile (for example via a CSV file) can cause issues due to display/probe noise and instability. The 33 step Grey Only provided within LightSpace is the optimum for most Augment needs.
As always, using large profiles, Cube based or Quick Profiles, will greatly increase LUT generation times!Augment Process
The process for using the 'Augmented Data process is as follows:
(Although, as with all LightSpace operations, there are no fixed workflows.)
1) Perform an initial Cube based profile of desired size (10-Point Cube for example).
2) Generate a LUT via Convert Colour Space.
3) Re-profile through the LUT using a Grey Only profile (33 step for example), or any other profile - Quick, or Cube based Characterisation. (The LUT can be loaded directly into the display/LUT box/Graphics program, or Active LUT within LightSpace can be used). The new profile will be 'saved' within the Manage Colour Space library, as normal.
4) Open 'Manage Colour Spaces' and select the initial Cube profile. Select the 'Add Aug Data' button, and from the pop-up menu select the second 'Grey Only' profile. The original profile will be modified into a new 'Augmented Data' profile, defined by the addition of a '+' to the Profile type.
5) Generate a new LUT via Convert Colour Space, with the 'Augmented Data' option ticked. (The new LUT will include the Augmented Grey Scale)
As always with all LightSpace operations there are no fixed workflow. The above is one example for the use of Augmented Data. Another could be to modify an older LUT with new Grey Scale data, rather than performing a totally new volumetric profile.
LightSpace's on-line manual has been updated already to reflect that upcoming new LightSpace feature. http://lightillusion.com/profiling_manual.html