Color measurements with colorimetric and multispectral imaging systems

M. de Lasarte; M. Vilaseca; J. Pujol; M. Arjona

doi:10.1117/12.647351

17 January 2006 Color measurements with colorimetric and multispectral imaging systems

M. de Lasarte, M. Vilaseca, J. Pujol, M. Arjona

Proceedings Volume 6062, Spectral Imaging: Eighth International Symposium on Multispectral Color Science; 60620F (2006) https://doi.org/10.1117/12.647351
Event: Electronic Imaging 2006, 2006, San Jose, California, United States

Abstract

This work is focused on the study and comparison of the performance for color measurements of different systems based on optoelectronic imaging sensors. We used two different configurations of the imaging system, one with three acquisition channels and the other with more spectral bands, in order to measure the color associated to each pixel of the captured scene. We applied different methodologies to obtain the XYZ tristumulus values from the measured digital signals. The different techniques included an absolute spectral and colorimetric characterization of the system and also direct transformations between both sets, which used several mathematical fittings such as the pseudo-inverse technique, a non-linear estimation method and the principal component analysis. The proposed configurations were experimentally tested imaging the patches of the Gretagmacbeth ColorChecker DC and Color Rendition charts placed in a light booth, and measuring the corresponding colors. The results obtained showed that optoelectronic imaging systems can be used in order to perform rather accurate color measurements with high spatial resolution. Specifically, the best results in terms of CIELab color differences were achieved by using a multispectral configuration of the imaging system with seven spectral bands and directly transforming the digital signals into XYZ tristimulus values by means of the pseudo-inverse technique.

Citation Download Citation

M. de Lasarte, M. Vilaseca, J. Pujol, and M. Arjona "Color measurements with colorimetric and multispectral imaging systems", Proc. SPIE 6062, Spectral Imaging: Eighth International Symposium on Multispectral Color Science, 60620F (17 January 2006); https://doi.org/10.1117/12.647351

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available