Separation studio 4 pantone
That is, the cellular structure of these models overemphasises the sampling for dark-tone colours, and thus leads to relatively large errors in light tones.
However, it seems that current studies have neglected an inconspicuous defect in such models when characterising printers equipped with black ink. The cellular Yule–Nielsen spectral Neugebauer model, together with its variants, is widely adopted in this topic because of its superb colorimetric and spectral accuracy. In the digital printing process, reliable colour reproduction is commonly achieved by printer characterisation, which defines the correspondence between the input device control values and the output colour information. Results showed an average end-to-end system accuracy of 1.5 delta-E00 and spectral reflectance rms error of 0.9% between measured and reproduced reflectances for a printed target of 55 colors. The spectral-based printing separation algorithm produced the least metameric reproduction compared to the original scene using a computationally feasible approach. Both scene input and printed output were defined spectrally. The approach described consisted of scene capture using a trichromatic digital camera combined with multiple filtration, image processing, and four color ink jet printing. The goal of the particular research reported in this article is to produce hardcopy results that are spectrally matched to original colors. The goal of this end-to-end color-reproduction research was the examination of the possibilities and limitations of commercial input and output devices. Efforts to construct end-to-end color reproduction systems based on the preservation of scene spectral data are ongoing at the Munsell Color Science Laboratory.