Converting Spyderprint 225 patch target to i1Profiler

[crenedecotret]

Thanks! I fixed it and changed the attachment in my Spyder 225+grays post

 

[pharmacist]

With some manipulation and the dedicated work of @crenedecotret I managed to manipulate the famous TC9.18 target (from X-Rite i1Profiler) and which is indeed considered as the gold standard target for RGB printer targets to be compatible with ArgyllCMS and the i1Pro2 spectro + scanning table.

The patches are randomized before I made this manipulated target so you will have a better ergomical scanning experience by aligning the target towards the right border of the scanning table: the i1Pro2 scanning eye will stop exactly on the white area at the end of the row and before the corresponding letter of the row you are scanning.

 

[crenedecotret]

With some manipulation and the dedicated work of @crenedecotret I managed to manipulate the famous TC9.18 target (from X-Rite i1Profiler) and which is indeed considered as the gold standard target for RGB printer targets to be compatible with ArgyllCMS and the i1Pro2 spectro + scanning table.

The patches are randomized before I made this manipulated target so you will have a better ergomical scanning experience by aligning the target towards the right border of the scanning table: the i1Pro2 scanning eye will stop exactly on the white area at the end of the row and before the corresponding letter of the row you are scanning.

The TC9.18 is a bit old but i'm curious to see if it will give good or similar results compared to just letting Argyllcms determine the patches.

I noticed that the TC918 doesn't seem to include much in the way of neutral. At least not at a quick glance. I built another three page target (enlarged i1 size) that combines the TC918 and Spyderprint grays. If you modify it, the last 167 patches in the ti1 are just there to fill my third sheet

 

[crenedecotret]

This last patch I think completes the series. I kept the Spyderprint gray patches but instead of using the 225 patchs from the color spyder chart, I let ArgyllCMS 644 patches patches including some grays.

With an enlarged i1 size patch, it can still be scanned in with a Colormunki using a ruler and will fit two letter sized sheets

There's maybe the datacolor 729 patch set that I could look at but extracting the RGB values is a pain. The TC918 and Atkinson targets had publicly available data for them.

 

[pharmacist]

Here is my combined target (randomized): Spyderprint 225 high quality target + grays into a single sheet A4 that can be scanned by both the Colormunki Photo/i1Studio (with a scanning jig) and the i1Pro2 device optimized for the i1Pro2 scanning table based on the ti1-file generated by @crenedecotret .

 

[pharmacist]

The TC9.18 is a bit old but i'm curious to see if it will give good or similar results compared to just letting Argyllcms determine the patches.

I noticed that the TC918 doesn't seem to include much in the way of neutral. At least not at a quick glance. I built another three page target (enlarged i1 size) that combines the TC918 and Spyderprint grays. If you modify it, the last 167 patches in the ti1 are just there to fill my third sheet

Thank you for your work. I will try to manipulate the patches to be a bit smaller and optimize it for the i1Pro2 with my ergonomical layout for scanning. It should be possible to reduce it to just 2 sheets of A4, which will save paper.

 

[pharmacist]

@crenedecotret :

I have done the modification for the i1Pro2 scanning table and the 3 page layout has been reduced to only 2 pages (The TC9.18 version is already squeezed down onto a single A4 sheet). Scanning is only possible with the i1Pro2.

Can you make a new ti1 file but only the TC9.18 combined with the SpyderPrint grays layout, but without the last 167 extra patches to fill up your third page ? The reason is that I can modify the target down to only 2 pages of A4, using sligtly larger patches.

 

[pharmacist]

Today I printed the modified TC9.18 target for ArgyllCMS on Netbit paper with my ET-8550 printer and used ArgylllCMS to create the profile:

The last image shows the target confines the movement of the i1Pro2 to stop exactly on the white area on of the target on the right side. I always modify my targets to behave like this for the sake of ergonimical scanning.

This is the printer profile based on the TC9.18 target that has been converted to ArgyllCMS by @crenedecotret :

 

[crenedecotret]

Here is the TC918 plus grays TI1.

If anyone is curious, my first experiment with the TC9.18 target was a failure. Chartread could not read back even the first line on my color munki. Pretty much every line was being confused with row "K" for some off reason. This was printed with -ii1 -a1.0325 which is a patch size i've used before. I even reprinted the first page to be 100% sure I didn't forget to turn off color management. The chart was identical

I printed out the spyder 225+grays chart which is a bit larger and really was the one I was curious about. We will see.

Hopefully these generated ti1 out of argyllcms won't be too problematic but that said, @pharmacist does seem to have gotten a good profile out of my converted TC918 patches...

 

[pharmacist]

Using a Colormunki the maximum amount of patches is 480 to have a comfortable and reliable reading using a scanning jig. I can remake the target for you with elongated patches so more samples are taken from each individual colour patch. This is necessary because the Colormunki only takes 50 samples per second. The i1Pro2 is 4 times faster: 200 samples per second.