HCFR - Open source projector and display calibration software
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Spreadsheet was VERY illustrative and helpful. I've learned how to do a little matrix math in Excel! Thank you!!
Thanks. I appreciate your patience! Both of you.
This slight Y value shift is because Y values on the D3 aren't "perfect", or is it because the math doesn't account for Y perfectly? If it's the math, is this what John says he's going to fix in HCFR?
You have the same meter, and I know you to be a bit of a perfectionist. How are you coping with this imperfection? No choice?
Spreadsheet was VERY illustrative and helpful. I've learned how to do a little matrix math in Excel! Thank you!!
Thanks. I appreciate your patience! Both of you.
This slight Y value shift is because Y values on the D3 aren't "perfect", or is it because the math doesn't account for Y perfectly? If it's the math, is this what John says he's going to fix in HCFR?
You have the same meter, and I know you to be a bit of a perfectionist. How are you coping with this imperfection? No choice?
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The Y shift is because HCFR implements a Y correction by design. So if you profile the D3 using HCFR (like I do) it's fine, but because your matrix does not include a Y correction it generates that small error. I think John said he would fix that so that one can do the correction with or without Y.
I've created a .ccmx file using the Argyllcms dispread and ccxxmake commands, but can't find what directory to put it into so that HCFR will allow me to pick it. Specifically, I'm using the argyll driver for a DTP94 and the "Use existing correction file" pull-down is always blank and doesn't allow me to type anything in. Doesn't HCFR allow use of .ccmx files? or only the .thc files created within HCFR? The reason I used ccxxmake was because I'm using my i1D3 as the "reference" to generate the correction for my DTP94 for a WLED laptop display. HCFR 3.0.4.0 doesn't yet allow for Simultaneous Measures" for two argyll-driver meters, so I couldn't us it to create the .thc file. Any suggestions?
Sorry about adding to the confusion, I'll try and clarify things a bit.
If we start with the 3 colour method, this takes the readings and references in xyz or XYZ space and calculates the matrix that will transform the readings to the references. If you use xyz then the columns of the matrix add to 1 which means that if you apply it to xyz values then the results are always valid xyz triplets.
The 4 colour approach ends up doing something more subtle and ends up with a matrix that when applied to xyz values converts the white from reading to reference keeping the xyz balance intact but that only works for that one point, looking at the column sums they no longer add to 1.
This is what confused me slightly and made me think that re-normalisation was desireable/correct.
When moving to XYZ values rather than xyz the 3 colour approach will adjust the 3 primaries from whatever the readings are to whatever the references are for all 3 values so it just works.
With the 4 colour matrix the Y values with shift in a clever but not very obvious way that's not related to the actual Y readings as all the inputs to the calculations are normalized values.
I'm currently thinking that the best approach will be to scale the resulting 4 colour matrix so that the measured Y value for white is corrected to the reference white Y value and not to do any normalisation of the results. This is a minor issue and with only effect the Y values in a linear fashion and so for now just use the calculated matrices.
John
Sorry about adding to the confusion, I'll try and clarify things a bit.
If we start with the 3 colour method, this takes the readings and references in xyz or XYZ space and calculates the matrix that will transform the readings to the references. If you use xyz then the columns of the matrix add to 1 which means that if you apply it to xyz values then the results are always valid xyz triplets.
The 4 colour approach ends up doing something more subtle and ends up with a matrix that when applied to xyz values converts the white from reading to reference keeping the xyz balance intact but that only works for that one point, looking at the column sums they no longer add to 1.
This is what confused me slightly and made me think that re-normalisation was desireable/correct.
When moving to XYZ values rather than xyz the 3 colour approach will adjust the 3 primaries from whatever the readings are to whatever the references are for all 3 values so it just works.
With the 4 colour matrix the Y values with shift in a clever but not very obvious way that's not related to the actual Y readings as all the inputs to the calculations are normalized values.
I'm currently thinking that the best approach will be to scale the resulting 4 colour matrix so that the measured Y value for white is corrected to the reference white Y value and not to do any normalisation of the results. This is a minor issue and with only effect the Y values in a linear fashion and so for now just use the calculated matrices.
John
The current version doesn't support ccmx files but you can enter a matrix for all meters by switching on the activate calibration files for all tri-stimulus probes in the advances preferences.
These issues should all be fixed shortly once I get all the issues ironed out, I'd expect a relaese early next week with the calibration matrix stuff much better.
John
The current version doesn't support ccmx files but you can enter a matrix for all meters by switching on the activate calibration files for all tri-stimulus probes in the advances preferences.
These issues should all be fixed shortly once I get all the issues ironed out, I'd expect a relaese early next week with the calibration matrix stuff much better.
John
Hi all, im new to this forum and new to hole calibration thing. I want to try and do some calibration on my JVC X3, so I been reading up on HCFR software, as I all ready have a Spyder 4 that we use for cal the computer screen for photo editing. I’ve down loaded the software and installed it on my laptop which is running xp but can't get the program to see the drivers for the spyder 4. The mesage i get up on the screen is (incorrect driver - starting communications with the meter failed with sever error. Argyll Error)
I was hoping that one of you kind experts would point me in the right direction.
Thanks
I was hoping that one of you kind experts would point me in the right direction.
Thanks
Thanks for the response, I followed these instructions last night but still could not get the program to see the spyder 4 pro.
I tried point the spider 4 towards the driver folder in the program files as stated by going to device manager and updating the driver.
When this didn't work I installed the full spyder program and then downloaded the later version of the driver just to make sure it worked.
So when HCFR still wouldn't look at it I uninstalled the spyder program and the driver and started again, but still no look.
HELP
It's probable just me being thick but I don't know what to try next
I tried point the spider 4 towards the driver folder in the program files as stated by going to device manager and updating the driver.
When this didn't work I installed the full spyder program and then downloaded the later version of the driver just to make sure it worked.
So when HCFR still wouldn't look at it I uninstalled the spyder program and the driver and started again, but still no look.
HELP
It's probable just me being thick but I don't know what to try next
This is the critical step, you must force windows to load up the driver from the hcfr driver directory by selecting all the manual options.
In device manager you should have a section called Argyll LibUSB-1.0A devices, with the device with (Argyll) after the name. If you don't see that then HCFR won't load the driver properly.
John
This is the critical step, you must force windows to load up the driver from the hcfr driver directory by selecting all the manual options.
In device manager you should have a section called Argyll LibUSB-1.0A devices, with the device with (Argyll) after the name. If you don't see that then HCFR won't load the driver properly.
John
When i run the spyd4en program from the command line, another black box opens up for a split second and then disperse. The command line then just returns to it's normal prompt. Dose this mean that it has done what it needs to? if so is there any way of checking?
Thanks for all your help, i don't mean to be a pain.
Rob
Thanks for all your help, i don't mean to be a pain.
Rob
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Ok - total newb here and going to ask questions that might seem stupid. I have a samsung un55d8000 and want a DIY calibration so I can learn. I've been reading and figured I'd like to get the xrite eodis3 i1display pro and use it along with hcfr. I'm reading the supported colorimeters for hcfr and it lists i1display 3 but not the pro, can I assume it's the same thing? If it is compatible with hcfr, will hcfr be sufficient enough for me to calibrate my tv? I want to learn before I spend money on calman and figured since hcfr was free it would be a good start. Thanks!
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Check to see if the tables show up in HCFR, I had 7 tables when I had the Spyder 4 Elite.
The i1 Display Pro and i1D3 are the same meter, the company that builds it calls it the Display Pro while other companies that sell the OEM version call it the Display 3. The i1Pro (not Display Pro) is a spectro and the Display Pro is a colorimeter. HCFR 3 is still working out some issues but John says we'll see a fixed release very soon.
Jason
Check to see if the tables show up in HCFR, I had 7 tables when I had the Spyder 4 Elite.
The i1 Display Pro and i1D3 are the same meter, the company that builds it calls it the Display Pro while other companies that sell the OEM version call it the Display 3. The i1Pro (not Display Pro) is a spectro and the Display Pro is a colorimeter. HCFR 3 is still working out some issues but John says we'll see a fixed release very soon.
Jason
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Thanks for the info! I'm assuming I can prob use xrite's software until HCFR is fixed.
Thanks for the info! I'm assuming I can prob use xrite's software until HCFR is fixed.
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I would think so but I have no personal experience with their software so I cannot say for certain or make any claims to its functionality.
Jason
I would think so but I have no personal experience with their software so I cannot say for certain or make any claims to its functionality.
Jason
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