Response Functions for Color Densitometry

Interinstrument variability can be minimized by adjusting the unfiltered response of the individual densitometers to a standard set of values and fitting the densitometer with carefully matched filters. An analysis of the sensitometric system and compilation of data on the present population of densitometers provides a basis for the specification of standard response functions. With these functions, the design responsibility for the filters and instrument may be separated and better control techniques determined. A standard unfiltered response is proposed, test methods are outlined, and filter curves are specified. Using a technique outlined for trimming individual instruments, the interinstrument variability of a group of commercial densitometers was reduced over 60%.

Print ISSN

0361-4573

Published

1974-01

Content type

Original Research

Keywords

Densitometers, Color densitometry

DOI

10.5594/J07620