Abstract

In this paper, we proposed a new image quality evaluation index—Color Distribution Index (CDI). It considers color gamut, contrast ratio, maximum luminance, gamma characteristics, and Just Noticeable Difference (JND) as human visual system to evaluate the ability for reproducing visually smooth gradation. When the CDI cell was defined, we verified JND from a fundamental matter, such as JND in luminance and chromaticity, using the latest TV sets. According to our investigations, luminance JND was $\Delta L/L =0.01$ and chromaticity JND was $\Delta u'v' =0.001$. We used these with unit CDI cell and evaluated bit depth needed for high image quality without any visible false contour. We clarified that 12 bit is needed for necessary and sufficient condition to reproduce high image quality with TV set designed based on BT.709. Also, we clarified that color gamut, contrast ratio, maximum luminance, gamma characteristics and bit depth should be balanced to achieve TV sets of high image quality from the viewpoint of the total image quality improvement.

© 2008 IEEE

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  1. Multimedia Systems and Equipment—Colour Measurement and Management—Part 2–4: Colour Management—Extended-Gamut YCC Colour Space for Video Applications IEC 61966-2-4(2006-01)IEC.
  2. http://www.sharp.co.jp/.
  3. S. S. Kim, N. D. Kim, B. H. Berkeley, B. H. You, H. Nam, J. H. Park, J. Lee, "Novel TFT-LCD technology for motion blur reduction using 120 Hz driving with McFi," SID2007 Dig. (2007).
  4. K. Kakinuma, M. Shinoda, T. Arai, H. Shibuta, T. Shirakuma, M. Kawase, T. Ube, T. Kumakura, S. Haga, T. Matsumoto, "Technology of wide color gamut backlight with RGB ligth-emitting diode for liquid crystal display television," SID2007 Dig. (2007).
  5. R. Heckaman, M. D. Fairchild, "Expanding display color gamut beyond the spectrum locus," Color Res. Appl. 75-482 (2006).
  6. T. Urabe, T. Sasaoka, K. Tatsuki, J. Takaki, "Technological evolution for large screen size active matrix OLED display," SID2007 Dig. (2007).
  7. Q. Gan, K. Kotani, M. Miyahara, "Quantizing accuracy for high quality color image processing," IEICE Trans. Electron. J76-D-2, 9, 1902-1909 (1993) (in Japanese).
  8. Y. Yoshida, Y. Yamamoto, "High quality LCD imaging system—Beyond 8 bits," Proc. PICS2002 35-41 (2002).
  9. M. R. Luo, G. Cui, B. Rigg, "The development of the CIE 2000 colour-difference formula: CIEDE2000," Color Res. Appl. 26, 340-350 (2001).
  10. G. Wyszecki, W. S. Stiles, Color Science: Concepts and Methods, Quantitative Data and Formulae (Wiley, 2000) pp. 514-581.
  11. Parameter Values for the HDTV Standards for Production and International Programme Exchange ITU-R BT.709-5.
  12. T. Fujine, T. Kanda, Y. Yoshida, M. Sugino, M. Teragawa, Y. Yamamoto, N. Ohta, "Theoretical limit of object colors and real object colors," SID 2008, Dig. (2008).
  13. L. J. Hornbeck, "Digital light processing TM for high-brightness, high-resolution applications," Proc. IS&T/SPIE Electron. Imag. 1997 (1997).

2006

R. Heckaman, M. D. Fairchild, "Expanding display color gamut beyond the spectrum locus," Color Res. Appl. 75-482 (2006).

2002

Y. Yoshida, Y. Yamamoto, "High quality LCD imaging system—Beyond 8 bits," Proc. PICS2002 35-41 (2002).

2001

M. R. Luo, G. Cui, B. Rigg, "The development of the CIE 2000 colour-difference formula: CIEDE2000," Color Res. Appl. 26, 340-350 (2001).

1993

Q. Gan, K. Kotani, M. Miyahara, "Quantizing accuracy for high quality color image processing," IEICE Trans. Electron. J76-D-2, 9, 1902-1909 (1993) (in Japanese).

Color Res. Appl.

R. Heckaman, M. D. Fairchild, "Expanding display color gamut beyond the spectrum locus," Color Res. Appl. 75-482 (2006).

M. R. Luo, G. Cui, B. Rigg, "The development of the CIE 2000 colour-difference formula: CIEDE2000," Color Res. Appl. 26, 340-350 (2001).

IEICE Trans. Electron.

Q. Gan, K. Kotani, M. Miyahara, "Quantizing accuracy for high quality color image processing," IEICE Trans. Electron. J76-D-2, 9, 1902-1909 (1993) (in Japanese).

Proc. PICS2002

Y. Yoshida, Y. Yamamoto, "High quality LCD imaging system—Beyond 8 bits," Proc. PICS2002 35-41 (2002).

Other

T. Urabe, T. Sasaoka, K. Tatsuki, J. Takaki, "Technological evolution for large screen size active matrix OLED display," SID2007 Dig. (2007).

Multimedia Systems and Equipment—Colour Measurement and Management—Part 2–4: Colour Management—Extended-Gamut YCC Colour Space for Video Applications IEC 61966-2-4(2006-01)IEC.

http://www.sharp.co.jp/.

S. S. Kim, N. D. Kim, B. H. Berkeley, B. H. You, H. Nam, J. H. Park, J. Lee, "Novel TFT-LCD technology for motion blur reduction using 120 Hz driving with McFi," SID2007 Dig. (2007).

K. Kakinuma, M. Shinoda, T. Arai, H. Shibuta, T. Shirakuma, M. Kawase, T. Ube, T. Kumakura, S. Haga, T. Matsumoto, "Technology of wide color gamut backlight with RGB ligth-emitting diode for liquid crystal display television," SID2007 Dig. (2007).

G. Wyszecki, W. S. Stiles, Color Science: Concepts and Methods, Quantitative Data and Formulae (Wiley, 2000) pp. 514-581.

Parameter Values for the HDTV Standards for Production and International Programme Exchange ITU-R BT.709-5.

T. Fujine, T. Kanda, Y. Yoshida, M. Sugino, M. Teragawa, Y. Yamamoto, N. Ohta, "Theoretical limit of object colors and real object colors," SID 2008, Dig. (2008).

L. J. Hornbeck, "Digital light processing TM for high-brightness, high-resolution applications," Proc. IS&T/SPIE Electron. Imag. 1997 (1997).

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