caa a22 4500 606244131 CHVBK 20210128101328.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s12596-015-0299-9 doi (NATIONALLICENCE)springer-10.1007/s12596-015-0299-9 A step by step recovery of spectral data from colorimetric information [Elektronische Daten] [Morteza Amiri, Seyed Amirshahi] In this paper, a technique named step by step progressive method is devised for recovery of spectral data from the corresponding colorimetric information. The method consists of several stages and employs different techniques, each of which is used to enhance the performance of the recovery as much as possible. The method firstly tests a series of 6 to 3 dimensional linear interpolation techniques, successively; however, there are some samples lying outside the interpolation color gamut, which is the weakest point of the interpolation method, limiting the performance of the first solution. To overcome this problem, a modified version of weighted principal component analysis (wPCA) is employed for the spectral recovery of the samples that have been failed with linear interpolation approach. The employed weighting function takes the spectral distances of the target data and the learning set into accounts. The efficiency of the method is then evaluated by the spectral and colorimetric deviations between the actual and recovered reflectance spectra and is compared with those obtained by classical 3D linear interpolation and PCA methods. As results show that the proposed progressive approach achieves significant improvement in terms of both spectral and colorimetric errors in comparison to the classical methods. The Optical Society of India, 2015 Spectral recovery nationallicence Tristimulus values nationallicence Linear interpolation nationallicence Weighted principal component analysis nationallicence Amiri Morteza Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), No 424 Hafez Avenue, 15914, Tehran, Iran aut Amirshahi Seyed Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), No 424 Hafez Avenue, 15914, Tehran, Iran aut Journal of Optics Springer India 44/4(2015-12-01), 373-383 0972-8821 44:4<373 2015 44 12596 https://doi.org/10.1007/s12596-015-0299-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s12596-015-0299-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Amiri Morteza Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), No 424 Hafez Avenue, 15914, Tehran, Iran aut NATIONALLICENCE 700 1- Amirshahi Seyed Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), No 424 Hafez Avenue, 15914, Tehran, Iran aut NATIONALLICENCE 773 0- Journal of Optics Springer India 44/4(2015-12-01), 373-383 0972-8821 44:4<373 2015 44 12596