Abstract

Accurate color image reproduction under arbitrary illumination can be realized if the spectral reflectance functions in a scene are obtained. Although multispectral imaging is one of the promising methods to obtain the reflectance of a scene, it is expected to reduce the number of color channels without significant loss of accuracy. This paper presents what we believe to be a new method for estimating spectral reflectance functions from color image and multipoint spectral measurements based on maximum a posteriori (MAP) estimation. Multipoint spectral measurements are utilized as auxiliary information to improve the accuracy of spectral reflectance estimated from image data. Through simulations, it is confirmed that the proposed method improves the estimation accuracy, particularly when a scene includes subjects that belong to various categories.

© 2007 Optical Society of America

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  2. B. Hill, "Color capture, color management, and the problem of metamerism," Proc. SPIE 3963, 3-14 (2000).
  3. H. Haneishi, T. Hasegawa, A. Hosoi, Y. Yokoyama, N. Tsumura, and Y. Miyake, "System design for accurately estimating spectral reflectance of art paintings," Appl. Opt. 39, 6621-6632 (2000).
  4. M. Yamaguchi, R. Iwama, Y. Ohya, T. Obi, N. Ohyama, Y. Komiya, and T. Wada, "Natural color reproduction in the television system for telemedicine," Proc. SPIE 3031, 482-289 (1997).
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    [CrossRef]
  6. M. Yamaguchi, H. Hideaki, H. Fukuda, J. Koshimoto, H. Kanazawa, M. Tsuchida, R. Iwama, and N. Ohyama, "High-fidelity video and still-image communication based on spectral information: natural vision system and its applications," Proc. SPIE 6062, 60620G (2006).
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  8. H. Fukuda, T. Uchiyama, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Development of 16-band multispectral image archiving system," Proc. SPIE 5667, 136-145 (2002).
    [CrossRef]
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    [CrossRef]
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2006

M. Yamaguchi, H. Hideaki, H. Fukuda, J. Koshimoto, H. Kanazawa, M. Tsuchida, R. Iwama, and N. Ohyama, "High-fidelity video and still-image communication based on spectral information: natural vision system and its applications," Proc. SPIE 6062, 60620G (2006).

2005

M. T. Eismann and R. C. Hardie, "Hyperspectral resolution enhancement using high-resolution multispectral imagery with arbitrary response functions," IEEE Trans. Image Process. 43, 455-465 (2005).

2004

R. C. Hardie, M. T. Eismann, and G. L. Wilson, "MAP estimation for hyperspectral image resolution enhancement using an auxiliary sensor," IEEE Trans. Image Process. 13, 1174-1184 (2004).
[CrossRef]

M. T. Eismann and R. C. Hardie, "Application of the stochastic mixing model to hyperspectral resolution enhancement," IEEE Trans. Image Process. 42, 1924-1933 (2004).

K. Ohsawa, T. Ajito, H. Fukuda, Y. Komiya, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Six-band HDTV camera system for spectrum-based color reproduction," J. Imaging Sci. Technol. 48, 85-92 (2004).

2003

2002

Y. Murakami, T. Obi, M. Yamaguchi, and N. Ohyama, "Nonlinear estimation of spectral reflectance based on Gaussian mixture distribution for color image reproduction," Appl. Opt. 41, 4840-4847 (2002).
[CrossRef]

H. Fukuda, T. Uchiyama, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Development of 16-band multispectral image archiving system," Proc. SPIE 5667, 136-145 (2002).
[CrossRef]

M. Yamaguchi, T. Teraji, K. Ohsawa, T. Uchiyama, H. Motomura, Y. Murakami, and N. Ohyama, "Color image reproduction based on the multispectral and multiprimary imaging: experimental evaluation," Proc. SPIE 4663, 15-26 (2002).
[CrossRef]

2000

1999

H. Sugiura, T. Kuno, N. Watanabe, N. Matoba, J. Hayashi, and Y. Miyake, "Development of highly accurate multispectral cameras," presented at International Symposium on Multispectral Imaging and Color Reproduction for Digital Archives, Chiba, Japan, 21-22 October 1999.

1997

M. Yamaguchi, R. Iwama, Y. Ohya, T. Obi, N. Ohyama, Y. Komiya, and T. Wada, "Natural color reproduction in the television system for telemedicine," Proc. SPIE 3031, 482-289 (1997).
[CrossRef]

F. Konig, "Reconstruction of natural spectra from color sensor using nonlinear estimation method," in Proceedings of IS&T's 50th Annual Conference: A Celebration of All of Imaging (Society for Imaging Science and Technology, 1997), pp. 454-458.

1996

P. D. Berns and R. S. Berns, "Analysis of multispectral image capture," in Proceedings of the Fourth Color Imaging Conference (Society for Imaging Science and Technology, 1996), pp. 19-22.

1994

D. P. Filiberti, S. E. Marsh, and R. A. Schowengerdt, "Synthesis of imagery with high spatial and spectral resolution from multiple image sources," Opt. Eng. 33, 2520-2528 (1994).
[CrossRef]

1989

A. K. Jain, "Two-dimensional systems and mathematical preliminaries," in Fundamentals of Digital Image Processing, T. Kailath, ed. (Prentice Hall, 1989), pp. 11-48.

W. Menke, Geophysical Data Analysis: Discrete Inverse Theory (Academic, 1989).

1987

J. C. Price, "Combining panchromatic and multispectral imagery from dual resolution satellite instruments," Remote Sens. Environ. 21, 119-128 (1987).
[CrossRef]

1984

B. R. Hunt and A. Kubler, "Karhunen-Loeve multispectral image restoration, part I: theory," IEEE Trans. Acoust. Speech Signal Process. ASSP-32, 592-600 (1984).
[CrossRef]

1978

W. K. Pratt, Digital Image Processing (Wiley, 1978).

1976

Ajito, T.

K. Ohsawa, T. Ajito, H. Fukuda, Y. Komiya, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Six-band HDTV camera system for spectrum-based color reproduction," J. Imaging Sci. Technol. 48, 85-92 (2004).

Berns, P. D.

P. D. Berns and R. S. Berns, "Analysis of multispectral image capture," in Proceedings of the Fourth Color Imaging Conference (Society for Imaging Science and Technology, 1996), pp. 19-22.

Berns, R. S.

P. D. Berns and R. S. Berns, "Analysis of multispectral image capture," in Proceedings of the Fourth Color Imaging Conference (Society for Imaging Science and Technology, 1996), pp. 19-22.

DiCarlo, J. M.

Eismann, M. T.

M. T. Eismann and R. C. Hardie, "Hyperspectral resolution enhancement using high-resolution multispectral imagery with arbitrary response functions," IEEE Trans. Image Process. 43, 455-465 (2005).

R. C. Hardie, M. T. Eismann, and G. L. Wilson, "MAP estimation for hyperspectral image resolution enhancement using an auxiliary sensor," IEEE Trans. Image Process. 13, 1174-1184 (2004).
[CrossRef]

M. T. Eismann and R. C. Hardie, "Application of the stochastic mixing model to hyperspectral resolution enhancement," IEEE Trans. Image Process. 42, 1924-1933 (2004).

Filiberti, D. P.

D. P. Filiberti, S. E. Marsh, and R. A. Schowengerdt, "Synthesis of imagery with high spatial and spectral resolution from multiple image sources," Opt. Eng. 33, 2520-2528 (1994).
[CrossRef]

Fukuda, H.

M. Yamaguchi, H. Hideaki, H. Fukuda, J. Koshimoto, H. Kanazawa, M. Tsuchida, R. Iwama, and N. Ohyama, "High-fidelity video and still-image communication based on spectral information: natural vision system and its applications," Proc. SPIE 6062, 60620G (2006).

K. Ohsawa, T. Ajito, H. Fukuda, Y. Komiya, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Six-band HDTV camera system for spectrum-based color reproduction," J. Imaging Sci. Technol. 48, 85-92 (2004).

H. Fukuda, T. Uchiyama, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Development of 16-band multispectral image archiving system," Proc. SPIE 5667, 136-145 (2002).
[CrossRef]

Haneishi, H.

K. Ohsawa, T. Ajito, H. Fukuda, Y. Komiya, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Six-band HDTV camera system for spectrum-based color reproduction," J. Imaging Sci. Technol. 48, 85-92 (2004).

H. Fukuda, T. Uchiyama, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Development of 16-band multispectral image archiving system," Proc. SPIE 5667, 136-145 (2002).
[CrossRef]

H. Haneishi, T. Hasegawa, A. Hosoi, Y. Yokoyama, N. Tsumura, and Y. Miyake, "System design for accurately estimating spectral reflectance of art paintings," Appl. Opt. 39, 6621-6632 (2000).

Hardie, R. C.

M. T. Eismann and R. C. Hardie, "Hyperspectral resolution enhancement using high-resolution multispectral imagery with arbitrary response functions," IEEE Trans. Image Process. 43, 455-465 (2005).

R. C. Hardie, M. T. Eismann, and G. L. Wilson, "MAP estimation for hyperspectral image resolution enhancement using an auxiliary sensor," IEEE Trans. Image Process. 13, 1174-1184 (2004).
[CrossRef]

M. T. Eismann and R. C. Hardie, "Application of the stochastic mixing model to hyperspectral resolution enhancement," IEEE Trans. Image Process. 42, 1924-1933 (2004).

Hasegawa, T.

Hayashi, J.

H. Sugiura, T. Kuno, N. Watanabe, N. Matoba, J. Hayashi, and Y. Miyake, "Development of highly accurate multispectral cameras," presented at International Symposium on Multispectral Imaging and Color Reproduction for Digital Archives, Chiba, Japan, 21-22 October 1999.

Hideaki, H.

M. Yamaguchi, H. Hideaki, H. Fukuda, J. Koshimoto, H. Kanazawa, M. Tsuchida, R. Iwama, and N. Ohyama, "High-fidelity video and still-image communication based on spectral information: natural vision system and its applications," Proc. SPIE 6062, 60620G (2006).

Hill, B.

B. Hill, "Color capture, color management, and the problem of metamerism," Proc. SPIE 3963, 3-14 (2000).

Hosoi, A.

Hunt, B. R.

B. R. Hunt and A. Kubler, "Karhunen-Loeve multispectral image restoration, part I: theory," IEEE Trans. Acoust. Speech Signal Process. ASSP-32, 592-600 (1984).
[CrossRef]

Iwama, R.

M. Yamaguchi, H. Hideaki, H. Fukuda, J. Koshimoto, H. Kanazawa, M. Tsuchida, R. Iwama, and N. Ohyama, "High-fidelity video and still-image communication based on spectral information: natural vision system and its applications," Proc. SPIE 6062, 60620G (2006).

M. Yamaguchi, R. Iwama, Y. Ohya, T. Obi, N. Ohyama, Y. Komiya, and T. Wada, "Natural color reproduction in the television system for telemedicine," Proc. SPIE 3031, 482-289 (1997).
[CrossRef]

Jain, A. K.

A. K. Jain, "Two-dimensional systems and mathematical preliminaries," in Fundamentals of Digital Image Processing, T. Kailath, ed. (Prentice Hall, 1989), pp. 11-48.

Kanazawa, H.

M. Yamaguchi, H. Hideaki, H. Fukuda, J. Koshimoto, H. Kanazawa, M. Tsuchida, R. Iwama, and N. Ohyama, "High-fidelity video and still-image communication based on spectral information: natural vision system and its applications," Proc. SPIE 6062, 60620G (2006).

Komiya, Y.

K. Ohsawa, T. Ajito, H. Fukuda, Y. Komiya, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Six-band HDTV camera system for spectrum-based color reproduction," J. Imaging Sci. Technol. 48, 85-92 (2004).

M. Yamaguchi, R. Iwama, Y. Ohya, T. Obi, N. Ohyama, Y. Komiya, and T. Wada, "Natural color reproduction in the television system for telemedicine," Proc. SPIE 3031, 482-289 (1997).
[CrossRef]

Konig, F.

F. Konig, "Reconstruction of natural spectra from color sensor using nonlinear estimation method," in Proceedings of IS&T's 50th Annual Conference: A Celebration of All of Imaging (Society for Imaging Science and Technology, 1997), pp. 454-458.

Koshimoto, J.

M. Yamaguchi, H. Hideaki, H. Fukuda, J. Koshimoto, H. Kanazawa, M. Tsuchida, R. Iwama, and N. Ohyama, "High-fidelity video and still-image communication based on spectral information: natural vision system and its applications," Proc. SPIE 6062, 60620G (2006).

Kubler, A.

B. R. Hunt and A. Kubler, "Karhunen-Loeve multispectral image restoration, part I: theory," IEEE Trans. Acoust. Speech Signal Process. ASSP-32, 592-600 (1984).
[CrossRef]

Kuno, T.

H. Sugiura, T. Kuno, N. Watanabe, N. Matoba, J. Hayashi, and Y. Miyake, "Development of highly accurate multispectral cameras," presented at International Symposium on Multispectral Imaging and Color Reproduction for Digital Archives, Chiba, Japan, 21-22 October 1999.

Mancill, C. E.

Marsh, S. E.

D. P. Filiberti, S. E. Marsh, and R. A. Schowengerdt, "Synthesis of imagery with high spatial and spectral resolution from multiple image sources," Opt. Eng. 33, 2520-2528 (1994).
[CrossRef]

Matoba, N.

H. Sugiura, T. Kuno, N. Watanabe, N. Matoba, J. Hayashi, and Y. Miyake, "Development of highly accurate multispectral cameras," presented at International Symposium on Multispectral Imaging and Color Reproduction for Digital Archives, Chiba, Japan, 21-22 October 1999.

Menke, W.

W. Menke, Geophysical Data Analysis: Discrete Inverse Theory (Academic, 1989).

Miyake, Y.

H. Haneishi, T. Hasegawa, A. Hosoi, Y. Yokoyama, N. Tsumura, and Y. Miyake, "System design for accurately estimating spectral reflectance of art paintings," Appl. Opt. 39, 6621-6632 (2000).

H. Sugiura, T. Kuno, N. Watanabe, N. Matoba, J. Hayashi, and Y. Miyake, "Development of highly accurate multispectral cameras," presented at International Symposium on Multispectral Imaging and Color Reproduction for Digital Archives, Chiba, Japan, 21-22 October 1999.

Motomura, H.

M. Yamaguchi, T. Teraji, K. Ohsawa, T. Uchiyama, H. Motomura, Y. Murakami, and N. Ohyama, "Color image reproduction based on the multispectral and multiprimary imaging: experimental evaluation," Proc. SPIE 4663, 15-26 (2002).
[CrossRef]

Murakami, Y.

M. Yamaguchi, T. Teraji, K. Ohsawa, T. Uchiyama, H. Motomura, Y. Murakami, and N. Ohyama, "Color image reproduction based on the multispectral and multiprimary imaging: experimental evaluation," Proc. SPIE 4663, 15-26 (2002).
[CrossRef]

Y. Murakami, T. Obi, M. Yamaguchi, and N. Ohyama, "Nonlinear estimation of spectral reflectance based on Gaussian mixture distribution for color image reproduction," Appl. Opt. 41, 4840-4847 (2002).
[CrossRef]

Obi, T.

Y. Murakami, T. Obi, M. Yamaguchi, and N. Ohyama, "Nonlinear estimation of spectral reflectance based on Gaussian mixture distribution for color image reproduction," Appl. Opt. 41, 4840-4847 (2002).
[CrossRef]

M. Yamaguchi, R. Iwama, Y. Ohya, T. Obi, N. Ohyama, Y. Komiya, and T. Wada, "Natural color reproduction in the television system for telemedicine," Proc. SPIE 3031, 482-289 (1997).
[CrossRef]

Ohsawa, K.

K. Ohsawa, T. Ajito, H. Fukuda, Y. Komiya, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Six-band HDTV camera system for spectrum-based color reproduction," J. Imaging Sci. Technol. 48, 85-92 (2004).

M. Yamaguchi, T. Teraji, K. Ohsawa, T. Uchiyama, H. Motomura, Y. Murakami, and N. Ohyama, "Color image reproduction based on the multispectral and multiprimary imaging: experimental evaluation," Proc. SPIE 4663, 15-26 (2002).
[CrossRef]

Ohya, Y.

M. Yamaguchi, R. Iwama, Y. Ohya, T. Obi, N. Ohyama, Y. Komiya, and T. Wada, "Natural color reproduction in the television system for telemedicine," Proc. SPIE 3031, 482-289 (1997).
[CrossRef]

Ohyama, N.

M. Yamaguchi, H. Hideaki, H. Fukuda, J. Koshimoto, H. Kanazawa, M. Tsuchida, R. Iwama, and N. Ohyama, "High-fidelity video and still-image communication based on spectral information: natural vision system and its applications," Proc. SPIE 6062, 60620G (2006).

K. Ohsawa, T. Ajito, H. Fukuda, Y. Komiya, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Six-band HDTV camera system for spectrum-based color reproduction," J. Imaging Sci. Technol. 48, 85-92 (2004).

M. Yamaguchi, T. Teraji, K. Ohsawa, T. Uchiyama, H. Motomura, Y. Murakami, and N. Ohyama, "Color image reproduction based on the multispectral and multiprimary imaging: experimental evaluation," Proc. SPIE 4663, 15-26 (2002).
[CrossRef]

H. Fukuda, T. Uchiyama, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Development of 16-band multispectral image archiving system," Proc. SPIE 5667, 136-145 (2002).
[CrossRef]

Y. Murakami, T. Obi, M. Yamaguchi, and N. Ohyama, "Nonlinear estimation of spectral reflectance based on Gaussian mixture distribution for color image reproduction," Appl. Opt. 41, 4840-4847 (2002).
[CrossRef]

M. Yamaguchi, R. Iwama, Y. Ohya, T. Obi, N. Ohyama, Y. Komiya, and T. Wada, "Natural color reproduction in the television system for telemedicine," Proc. SPIE 3031, 482-289 (1997).
[CrossRef]

Pratt, W. K.

Price, J. C.

J. C. Price, "Combining panchromatic and multispectral imagery from dual resolution satellite instruments," Remote Sens. Environ. 21, 119-128 (1987).
[CrossRef]

Schowengerdt, R. A.

D. P. Filiberti, S. E. Marsh, and R. A. Schowengerdt, "Synthesis of imagery with high spatial and spectral resolution from multiple image sources," Opt. Eng. 33, 2520-2528 (1994).
[CrossRef]

Sugiura, H.

H. Sugiura, T. Kuno, N. Watanabe, N. Matoba, J. Hayashi, and Y. Miyake, "Development of highly accurate multispectral cameras," presented at International Symposium on Multispectral Imaging and Color Reproduction for Digital Archives, Chiba, Japan, 21-22 October 1999.

Teraji, T.

M. Yamaguchi, T. Teraji, K. Ohsawa, T. Uchiyama, H. Motomura, Y. Murakami, and N. Ohyama, "Color image reproduction based on the multispectral and multiprimary imaging: experimental evaluation," Proc. SPIE 4663, 15-26 (2002).
[CrossRef]

Tsuchida, M.

M. Yamaguchi, H. Hideaki, H. Fukuda, J. Koshimoto, H. Kanazawa, M. Tsuchida, R. Iwama, and N. Ohyama, "High-fidelity video and still-image communication based on spectral information: natural vision system and its applications," Proc. SPIE 6062, 60620G (2006).

Tsumura, N.

Uchiyama, T.

H. Fukuda, T. Uchiyama, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Development of 16-band multispectral image archiving system," Proc. SPIE 5667, 136-145 (2002).
[CrossRef]

M. Yamaguchi, T. Teraji, K. Ohsawa, T. Uchiyama, H. Motomura, Y. Murakami, and N. Ohyama, "Color image reproduction based on the multispectral and multiprimary imaging: experimental evaluation," Proc. SPIE 4663, 15-26 (2002).
[CrossRef]

Wada, T.

M. Yamaguchi, R. Iwama, Y. Ohya, T. Obi, N. Ohyama, Y. Komiya, and T. Wada, "Natural color reproduction in the television system for telemedicine," Proc. SPIE 3031, 482-289 (1997).
[CrossRef]

Wandell, B. A.

Watanabe, N.

H. Sugiura, T. Kuno, N. Watanabe, N. Matoba, J. Hayashi, and Y. Miyake, "Development of highly accurate multispectral cameras," presented at International Symposium on Multispectral Imaging and Color Reproduction for Digital Archives, Chiba, Japan, 21-22 October 1999.

Wilson, G. L.

R. C. Hardie, M. T. Eismann, and G. L. Wilson, "MAP estimation for hyperspectral image resolution enhancement using an auxiliary sensor," IEEE Trans. Image Process. 13, 1174-1184 (2004).
[CrossRef]

Yamaguchi, M.

M. Yamaguchi, H. Hideaki, H. Fukuda, J. Koshimoto, H. Kanazawa, M. Tsuchida, R. Iwama, and N. Ohyama, "High-fidelity video and still-image communication based on spectral information: natural vision system and its applications," Proc. SPIE 6062, 60620G (2006).

K. Ohsawa, T. Ajito, H. Fukuda, Y. Komiya, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Six-band HDTV camera system for spectrum-based color reproduction," J. Imaging Sci. Technol. 48, 85-92 (2004).

M. Yamaguchi, T. Teraji, K. Ohsawa, T. Uchiyama, H. Motomura, Y. Murakami, and N. Ohyama, "Color image reproduction based on the multispectral and multiprimary imaging: experimental evaluation," Proc. SPIE 4663, 15-26 (2002).
[CrossRef]

H. Fukuda, T. Uchiyama, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Development of 16-band multispectral image archiving system," Proc. SPIE 5667, 136-145 (2002).
[CrossRef]

Y. Murakami, T. Obi, M. Yamaguchi, and N. Ohyama, "Nonlinear estimation of spectral reflectance based on Gaussian mixture distribution for color image reproduction," Appl. Opt. 41, 4840-4847 (2002).
[CrossRef]

M. Yamaguchi, R. Iwama, Y. Ohya, T. Obi, N. Ohyama, Y. Komiya, and T. Wada, "Natural color reproduction in the television system for telemedicine," Proc. SPIE 3031, 482-289 (1997).
[CrossRef]

Yokoyama, Y.

Appl. Opt.

IEEE Trans. Acoust. Speech Signal Process.

B. R. Hunt and A. Kubler, "Karhunen-Loeve multispectral image restoration, part I: theory," IEEE Trans. Acoust. Speech Signal Process. ASSP-32, 592-600 (1984).
[CrossRef]

IEEE Trans. Image Process.

R. C. Hardie, M. T. Eismann, and G. L. Wilson, "MAP estimation for hyperspectral image resolution enhancement using an auxiliary sensor," IEEE Trans. Image Process. 13, 1174-1184 (2004).
[CrossRef]

M. T. Eismann and R. C. Hardie, "Application of the stochastic mixing model to hyperspectral resolution enhancement," IEEE Trans. Image Process. 42, 1924-1933 (2004).

M. T. Eismann and R. C. Hardie, "Hyperspectral resolution enhancement using high-resolution multispectral imagery with arbitrary response functions," IEEE Trans. Image Process. 43, 455-465 (2005).

J. Imaging Sci. Technol.

K. Ohsawa, T. Ajito, H. Fukuda, Y. Komiya, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Six-band HDTV camera system for spectrum-based color reproduction," J. Imaging Sci. Technol. 48, 85-92 (2004).

J. Opt. Soc. Am. A

Opt. Eng.

D. P. Filiberti, S. E. Marsh, and R. A. Schowengerdt, "Synthesis of imagery with high spatial and spectral resolution from multiple image sources," Opt. Eng. 33, 2520-2528 (1994).
[CrossRef]

Proc. SPIE

B. Hill, "Color capture, color management, and the problem of metamerism," Proc. SPIE 3963, 3-14 (2000).

H. Fukuda, T. Uchiyama, H. Haneishi, M. Yamaguchi, and N. Ohyama, "Development of 16-band multispectral image archiving system," Proc. SPIE 5667, 136-145 (2002).
[CrossRef]

M. Yamaguchi, R. Iwama, Y. Ohya, T. Obi, N. Ohyama, Y. Komiya, and T. Wada, "Natural color reproduction in the television system for telemedicine," Proc. SPIE 3031, 482-289 (1997).
[CrossRef]

M. Yamaguchi, T. Teraji, K. Ohsawa, T. Uchiyama, H. Motomura, Y. Murakami, and N. Ohyama, "Color image reproduction based on the multispectral and multiprimary imaging: experimental evaluation," Proc. SPIE 4663, 15-26 (2002).
[CrossRef]

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