HOWTO Create a Profile Using the Wolf Faust Custom 5 Slide Test Target Set How to create a profile using all five target scans from Wolf Faust's custom test target sets using LProf.  Turns out to be fairly easy although it does take a little effort and it does require some hand work on your part. Create a Composite Reference File 1. First you will need to create a composite reference file.  Open the first reference file (in this case Testscan2-1.txt) in a text editor and change the SERIAL from "Testscan2-5 Individually Measured Data" to "Testscan2-all Individually Measured Data". 2. Change NUMBER_OF_SETS from 288 to 1440 3. Modify the data section to add an "A" to the beginning of each line. BEGIN_DATA A1          0.83    1.74    2.80..... ... GS23        0.05    0.04    0.04 ... END_DATA becomes BEGIN_DATA AA1          0.83    1.74    2.80 .... ... AGS23        0.05    0.04    0.04 ... END_DATA This step if made much easier if your editor's find and replace function supports regular expressions. At this point double check that you have not changed anything that should not have been changed and do a "save as" and give the file a name that indicates what it is. In my case I used "Testscan2-all.txt" Note the the first character of each of these rows MUST be a letter. 4. Now open the second file (Testscan2-2.txt) in a separate editor session and do step 3 but use a "B"  instead of an "A"  so that BEGIN_DATA A1          0.83    1.74    2.80..... ... GS23        0.05    0.04    0.04 ... END_DATA becomes BEGIN_DATA BA1          0.83    1.74    2.80 .... ... BGS23        0.05    0.04    0.04 ... END_DATA 5. Copy the data section (everything between BEGIN_DATA and END_DATA) and paste it into the first file just before the END_DATA statement. At this point you may want to save the up dated "....all.txt" file. 6. Close the file opened in step 4 and discard the changes (these are now in the first file). 7. Repeat steps 4 through 6 on the remaining files changing the letter used   for each as needed (I used C through E).  You must use letters since the IT8   parser in LProf will not accept numbers in the first position of a line in   the data section of the file.   I learned this the hard way. 8. Then with the file opened in step 1 do a save as with a meaningfully name if you have not already done this. In this case I used Testscan2-all.txt. Create a Composite Measurement File Creating a composite measurement file is exactly the same except you must first create a measurement file for each target image using LProf.  The process below will work for any version of LProf starting with 1.11.  Older versions will be slightly different and with older versions the profiling code only worked with 8 bit/channel data so you should not be using anything older than 1.11.3 at this time. 1. In the LProf scanner/camera profiler tab select any reference file that   has a 22 column picker.  If you don't have one installed use the *-5.txt   reference file from above and install it with a 22 column picker using the   LProf reference file installer on the preferences tab.   This reference file   can also be used to create a profile using only the standard IT8 image (scan2-5.png) from the set. 2. Load the first target scan (in this case Scan2-1.png). Place the four corner marks and check the hot zones in the picker template to make sure these are OK.  Adjust corner marks as needed. 3. Step two will result in the measurement data automatically being saved in   a CGATS file named ~/.lprof/temp/measurement.cgt .  The spelling is bad but   this is a hidden file that users would not normally see.  Grab this file and   save it off some place with a meaningful name so you can track which measurement file goes with which target image.  I named the first of these scan2-1.cgt. 4. Repeat 2 and 3 with each image using names that correspond (IE. scan2-1.cgt   through scan2-5.cgt) so that you know which target each is for. 5.  Apply bascially the same process used to create the composite reference file to these files. There is however one differnce. You need to change the names of the DMIN and DMAX rows to GS0 and GS23 repectively. Then save it off with a meaningful name. Do these in the same order (1 .. 5). Create the Profile. 1. Install the new composite reference file using the reference file   installer on the preferences tab of LProf. If the Reference File Installer does not recognize it have a look at the file as it is likely that when editing the file that you but an extra first character in one of the rows where this should not have been. It should be easy to correct.  You can use any existing picker template.  The picker template does not matter since we are going to bypass how LProf normally handles this but do not use the empty pick teamplate. 2. In the Scanner/Camera profiler tab open any image and select the new   composite reference file.  Then select four corner locations in the image and make sure that LProf has placed a picker template on the image. 3. Now copy the new composite measurement file created in the second section above to  ~/.lprof/temp/measurement.cgt . 4. In the LProf scanner/camera profiler tab select a file name for the new   profile and change the settings in the Profile ID and Profile Parms dialogs   as needed. 5. Create the profile. Congratulations you have just created your profile. Took me about 15 minutes to create the composite reference file and slightly longer to do the composite measurement file. After doing a few of these I can now do these much faster. It actually took longer to right up how to do this than to actually do it. LProf CVS took a little over a minute to create the profile using the new GRCV smoothness optimization code on a very fast machine. Versions without the GRCV code will be faster but you will have to figure out the best smoothness parameters by trial and error. The GRCV code will be part of LProf version 1.11.5 when it is released.