Data for paper "Understanding colors of Dufaycolor: Can we recover them using historical colorimetric and spectral data?"

We used revision of color-screen tagged by paper-dyes

Configuration files for the two test scans are

• template-d2.par.gz (in paper first test image)
• template-d1.par.gz (in paper second test image)

These are normal parameter files with dye_balance and color_model removed which is supplied by generating scripts.

To produce sample renders we used script dorender.sh.

• Fig. 4 is generated using sh dorender.sh template-d2.par dufay3-0002.tif brightness fig4
• Fig. 5 is generated using sh dorender.sh template-d2.par dufay3-0002.tif neutral fig5

To generate Delta E info we used scripts: docmp.sh.txt, docmp2.sh.txt, and docmp3.sh.txt

Spectral transmission curves are produced using spectra-gnuplot.p.txt Actual spectral data was saved using colorscreen lab save-dyes command which outputs dyes built into colorscreen package:

• Cornwell-Clyne: red1.txt, green1.txt, blue1.txt;
• Harrison and Horner: red2.txt, green2.txt, blue2.txt;
• Collins and giles: red3.txt, green3.txt, blue3.txt;
• Neblette: red4.txt, green4.txt, blue4.txt