i1Profiler:When using the i1Pro, software will not recognize wrong line read

[dnmiller4]

i1 Profiler.    When using the i1Pro, software will not recognize if have read a wrong line.

When reading a target, RGB, regardless of which line I read, the software does not register the corresponding line.   In other words it does not tell me I have read the wrong line for, let's say, line 3.    I can read line 12, and if line 3 was the next one, it thinks I am reading line 3, the software is happy.  It says read line 4   Does not tell me I have read the wrong line.

I this happens regardless of whether I am using i1 Pro revision D, or revision A.   So, it is not the i1 Pro's.

MBP4.1 17 inch, 10.6.7, Epson Pro 9600 printer   

[rasworth]

Your experience is consistent with mine, does not recognize wrong lines.  It seems to check for the correct number of patches in a line, but not much more.  The i1P target does not have the three extra columns that PMP had, so it can't do a line number check, and apparently does not do a "sanity" test on the patch values.

So I check the number every few lines, and if it's off I click on a previous line and start from there, the program has no problem "backing up".

Richard Southworth

[Tarkowsky]

There is a MeasurementTollerance value which has been set to 0.4 as default value.
If you low this value i1Profiler will give you a reading error at the end of the line when there is a misreading problem.
Try to decrease the value to 0.2 and see if you can get better result.
I usually manage to read a complete 1728 patches target with an i1Pro with a value = 0.121.
This  MeasurementTollerance value only works for the i1.
If you're on Windows you can find  MeasurementTollerance value inside a file named XRi1G2WorkflowSettings.ini which is located in the i1Profiler folder  C:\ProgramData\X-Rite\i1Profiler\XRi1G2WorkflowSettings.ini
Hope it can help.

[Doyle Yoder]

On Mac it is in .../Library/Application Support/X-Rite/i1Profiler/XRi1G2WorkflowSettings.ini and can be edited with TextEdit.

[rasworth]

I'm not sure the MeasurementTolerance parameter has anything to do with the wrong line issue, i.e. is it a check on multiple readings for each patch or does it somehow relate to the original RGB values?  In order to detect a wrong line the software would have to decide the measured values were very dissimilar from the original target RGB inputs, and this could be problematic with very non-linear printers.

Anybody know for sure, since I'm not presently set up to do any experimenting/scanning?

Richard Southworth

[Ed Foster, Jr.]

On some papers I found that iPublish was registering a “wrong line number” error when indeed I was on the correct line.  Repeated attempts to read the row with the iOne instrument resulted in the same error. I enlarged patch sizes and reread, but with the same error results.  My next assumption was that a patch or patch row was beyond the default measurement tolerance of 0.4.  After increasing the measurement tolerance to 0.5, I was able to read the charts without error, and was able to create a very acceptable profile.

So, with only the above in hand, I suspect that when an actual measurement deviates by more than the measurement tolerance from what is expected of a patch or patches in a particular row, it throws the “wrong line number” error indiscriminately.

Ed Foster Jr.

[psteeper]

Thanks for the tip Ed. I had to increase the tolerance to 0.7 before it would read the line without an error. I'm now getting an error "Cannot create profile" when I try creating the profile.

Overall the I1 upgrade has not worked well for me. I'm going to keep using PMP 5 when I'm at a customer site.