Densitometric and Planimetric Measurement Techniques for Newspaper Printing

by Maria Wroldsen, Peter Nussbaum, Jon Hardeberg

an investigation of the statistical relationship between densi and planimetric measurements on newsprint. Is it possible to convert planimetric to densitometric and vice versa?

They used regression analysis with 2nd order polynomials. Each color was studied individually. They used a training set to establish the model and a test set to evaluate its performance. They did all the repeatability tests as well.

The model is not good enough for prediction, since it exceeds 2% tolerance that is the target for dot area meters.

It's interesting that they did this experiement because of the increased use of measurements in Norway