Journal article
End-to-end color printer calibration by total least squares regression
Information Sciences and Systems, Department of Electrical Engineering, Princeton University, Princeton, NJ 08544, USA. xia@ee.princeton.edu1
Neugebauer modeling plays an important role in obtaining end-to-end device characterization profiles for halftone color printer calibration. This paper proposes total least square (TLS) regression methods to estimate the parameters of various Neugebauer models. Compared to the traditional least squares (LS) based methods, the TLS approach is physically more appropriate for the printer modeling problem because it accounts for errors in the measured reflectance of both the primaries and the modeled samples.
A TLS method based on print measurements from single-colorant step-wedges is first developed. The method is then extended to incorporate multicolorant print measurements using an iterative algorithm. The LS and TLS techniques are compared through tests performed on two color printers, one employing conventional rotated halftone screens and the other using a dot-on-dot halftone screen configuration.
Our experiments indicate that the TLS methods yield a consistent and significant improvement over the LS-based techniques for model parameter estimation. The gains from the TLS method are particularly significant when the number of patches for which measured data is available is limited.
Language: | English |
---|---|
Publisher: | IEEE |
Year: | 1999 |
Pages: | 700-16 |
ISSN: | 10577149 and 19410042 |
Types: | Journal article |
DOI: | 10.1109/83.760337 |
Calibration Gain measurement Iterative algorithms Least squares approximation Least squares methods Parameter estimation Performance evaluation Printers Reflectivity TLS regression methods Testing calibration dot-on-dot halftone screen end-to-end color printer calibration experiments halftone color printer calibration image colour analysis iterative algorithm least squares approximations measured data measured reflectance errors modeled samples multicolorant print measurements parameter estimation primaries printers recursive estimation rotated halftone screens single-colorant step-wedges spectral Neugebauer models spectral analysis total least squares regression