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. 2022 Jan 13;22(2):603. doi: 10.3390/s22020603

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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The results of averaged pixel values of the print color targets transformed by the PCA method into the pigment-based coordinate system for dye (triangles) and pigment-based (circles) prints. The results are shown for the first two principal components PC1 and PC2. The point color represents the particular color target. Subfigure (A) represents the results for the test images printed on the PRO Pearl photo paper. Subfigure (B) presents the results for the test images printed on the Cotton Textured art paper.