Spectral reflectance recovery of various materials based on linear interpolation with nonparametric metameric spectra of extreme points

En Chen, Tzren Ru Chou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, we proposed a new method to recover the spectral reflectance by simulating the nonparametric metameric spectra of extreme points (NMSEP) with a linear interpolation method, called the INMSEP method. The concept of introducing the spectra of extreme points as training samples greatly expands the proportion of the reconstructed gamut, and effectively solves the shortcomings of the previous methods. In addition, we conducted experiments that selected the color chips material and compared the reconstructed results of various types of materials. The effectiveness of this suggested method was evaluated with a comparison of the previous linear interpolation, classical PCA, and weighted PCA methods. There is a color difference under illuminant A and TL84. The RMSE and the GFC values are used as the criteria of the recovered spectrum. The experimental results show that the suggested method has high accuracy in reconstructing the spectral reflectance for materials of artificial colors, such as color chips and silk cloth. The results are good in both colorimetric accuracy and fitness of spectrum. The human eye cannot distinguish the difference between the original and the recovered colors. However, the reconstruction of natural color dataset of our method is not obviously effective compared to the PCA-based method. This needs to be improved in the future.

Original languageEnglish
Title of host publicationICCSP 2019 - Proceeding of 2019 the 3rd International Conference on Cryptography, Security and Privacy, with workshop 2019 the 4th International Conference on Multimedia and Image Processing, ICMIP 2019
PublisherAssociation for Computing Machinery
Pages247-255
Number of pages9
ISBN (Electronic)9781450366182
DOIs
Publication statusPublished - 2019 Jan 19
Externally publishedYes
Event3rd International Conference on Cryptography, Security and Privacy, ICCSP 2019 with Workshop 2019 the 4th International Conference on Multimedia and Image Processing, ICMIP 2019 - Kuala Lumpur, Malaysia
Duration: 2019 Jan 192019 Jan 21

Publication series

NameACM International Conference Proceeding Series

Conference

Conference3rd International Conference on Cryptography, Security and Privacy, ICCSP 2019 with Workshop 2019 the 4th International Conference on Multimedia and Image Processing, ICMIP 2019
CountryMalaysia
CityKuala Lumpur
Period19/1/1919/1/21

Keywords

  • Interior point optimization
  • Linear interpolation
  • Nonparametric metameric spectra of extreme points
  • Spectral reflectance recovery

ASJC Scopus subject areas

  • Software
  • Human-Computer Interaction
  • Computer Vision and Pattern Recognition
  • Computer Networks and Communications

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  • Cite this

    Chen, E., & Chou, T. R. (2019). Spectral reflectance recovery of various materials based on linear interpolation with nonparametric metameric spectra of extreme points. In ICCSP 2019 - Proceeding of 2019 the 3rd International Conference on Cryptography, Security and Privacy, with workshop 2019 the 4th International Conference on Multimedia and Image Processing, ICMIP 2019 (pp. 247-255). (ACM International Conference Proceeding Series). Association for Computing Machinery. https://doi.org/10.1145/3309074.3309118