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C
Appendix C:
Importing
densitometer
measurements
C-1 Importing densitometer measurements
This appendix describes Simple ASCII File Format, which can be used to
import density measurements from measurement devices. To use your own
measurement data from an alternate densitometer, record your individual
readings in a text file and structure it as described below.
Simple ASCII Import File Format (SAIFF)
This format describes Status T measurement data and is for import into the
ColorWise Pro Tools Calibrator. There are three possible file formats:
• 1D Status T density for EFI 34 patch page
• 1D Status T density for EFI 21 patch page
• 1D Status T density for other pages (maximum of 256 patches per ink)
The file format is ASCII and has no tabs. A single space or multiple spaces are
used as delimiters. Blank lines are not allowed. Each line in the file represents
four patches (C, M, Y, K) of a specific ink value. Comments may be on any
line in the file, and these lines start with a pound sign (#) followed by a space.
A line with a pound sign followed by any character other than a space has
been reserved. Comments must be on an entire line by themselves.
Each line of data contains five values. The first number is the sequential patch
number (for EFI 34 and EFI 21 pages) or the ink value percentage (for other
pages). The following four values are the density values of C, M, Y, and K of
the corresponding patch. Lines are ordered either by increasing sequential
patch numbers or by increasing the ink percentage.
For Windows computers, the file extension must be .cm1. For Mac OS
computers, the file type must be 'TEXT'.
Measurement data in EFI 34 and EFI 21 are paper-relative. For other pages,
if the first line corresponds to zero ink value, the Calibrator assumes that the
measurement data is absolute and adjusts it to become paper-relative by
subtracting the density values of the first line from the remaining patches.
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