Evaluation of a multi-spectral camera system for inline color measurement

We evaluate a new 12-channel multi-spectral line scan camera system for full-width inline color measurements. The system provides full reflectance spectra for each pixel allowing for accurate color measurement with high spatial resolution. In our analysis, we performed measurements on three test-charts printed in our lab and by different offset printing shops in Germany. We compare the results colorimetrically and spectrally to reference measurements obtained from a conventional spectrophotometer (X-Rite i1iSis XL). In conclusion, the system is suitable for pixel-wise color measurements with an accuracy comparable to that of the human visual system or better.