Printer Profile Validation: M1 vs. M2 and ΔE2000 Evaluation

[know]

I used only the 576-patch chart, and the verification chart was generated using Profile Gamut mode.

Oh, ok... I should have noticed. You say you used the 572 patch chart for both profiling and the verification measurement... That makes sense, since the Worst Patches all were strip number 36, and the 192 patch chart does not have that many strips... Anyway, it seems strip/column 36 probably is a misread and would decrease the results of some metrics in the reports, thus should be read again. You can also try to run the “Analyse Profile Quality” in Check & Refine, while Run type is set to Verification. You would have to manually select the ti3 file and the ICC/ICM profile file. Currently that tab is not fully adapted to use for Verification charts, but the quality check still works and will give a listing of the worst patches, but also the results window is made for Profiling runs, not verification runs. I expect that will be improved upon. However, this will give a better idea where the worst readings are for your verification chart measurements.

The reports you posted have all the same problem, except the one-page report, which does not list worst patches.

Thanks for the files.

Cheers,
Knut

 

[know]

found strip-36

Cool!
Nice to see that my thinking was right. The red highlights are obviously in need of a re-measurement, as suspected

It is a good example of a misreading, where you most likely started sliding your instrument on the strip labels, or before the strip labels. Then, the change in color makes the chart reading think that the first patch is white, and you can see how the first 8 patches are shifted one position, but then suddenly corrects its self for 36I and after.

This is also a good example of the neighbour check function working very well to detect bad misreads.

Knut

 

[know]

@jctay

@itsab1989 has released a new beta addressing some of the issues discussed

https://github.com/itsab1989/ChromIQ/releases

 

[jctay]

 

[know]

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Thanks for sharing all the charts and their highlighting
Very clear to see that you had the same problem on several strips, and you remeasured those strips with the misreadings, thus the patch highlighting became green when re-reading found the error was no longer there.

Nice to see.

The log you provided showed this, and thus @itsab1989 and claude made the last beta release to detect when this happens.

 

[jctay]

Suggestion: Require User Input Before Measuring the Next Page

Upon completing the final strip of the current page:
. Pause the measurement process and wait for user input.
. Require the user to press the physical Test Button on the i1Pro to resume measurement and proceed to the next page.

Thank you.

 

[jctay]

Feedback: 100 × 150 mm Photo Print

Some 4 × 6-inch photo printers have an actual print size of approximately 100 × 148 mm.

102 × 152 mm: Rejected by ChromIQ Print Direct.
100 × 150 mm: Accepted by ChromIQ Print Direct.