Optimizing Monaco Scanner Profiler

Scanner: Epson V500
Mode: Reflective scanning with Epson Scan utility


Format of Reference data
For the modified reference set to be read by MP successfully,  the followings must be observed.
a) The format name SAMPLE_ID must not be changed.
b) The patch names under #ID must be retained.
c)  MP only reads the PCS data  in Lab.

Tweaking the White and Black points in the reference set

1) Duplicate the reference file and use the copied file as the working copy.
2) Use note editor to change SAMPLE_ID to SAMPLE_NAME, so that PatchTool can read the Sample Name correctly.
3) Read the modified file with PatchTool.  Select the required Data fields as shown and re-output the reference data.

4) Open the output file
    a) Change SAMPLE_NAME back to SAMPLE_ID.
    b) Modify L value for Dmin from 92.407 to 92.207  (reduced L by 0.2)
    c) Modify L value for Dmax from 2.981 to 2.781     (reduced L by 0.2)

5) Generate the scanner profile with the modified reference set.

Comparison of Result with and without WP and BP tweaking
. Assigned profile in CS4 and converted data to ProPhoto color space
. RGB data were extracted with PM5 and compared to original reference data with PatchTool.
                           ΔE2000
               average   90%      95%      max
Profile
Standard MP     1.69     2.21     2.31     2.70     (ver 4.8)
standard PM5    1.99     2.63     2.79     3.23     (ver 5.0.10)
Epson generic   2.15     3.39     3.93     5.77     

Tweaked MP      0.42     0.72     0.86     2.26    

Evaluated with Imatest