Abstract

A high dynamic range liquid crystal display (HDR-LCD) can enhance the contrast ratio of images by utilizing locally controlled dynamic backlight. We studied the HDR-LCD as a dual-panel display: a backlight module and a liquid crystal (LC) cell. As the gamma of the LC signal, the backlight module was also endowed with a gamma function to control the contrast ratio of HDR images. The inverse of a mapping function (IMF) method proposed as a dynamic gamma mapping curve for the backlight module, has been demonstrated to further improve in HDR image quality. By implementing the IMF method on a ${\hbox{37}}^{\prime\prime}$ HDR-LCD TV with 8$\times$8 backlight zones, the image contrast ratio can reach $\sim{\hbox{20}}{\thinspace}{\hbox{000:1}}$ while maintaining high brightness, clear image detail, and an average power reduction of 30%.

© 2008 IEEE

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  1. H. Seetzen, W. Heidrich, W. Stuerzlinger, G. Ward, L. W. M. Trentacoste, A. Ghosh, A. Vorozcovs, "High dynamic range display systems," SIGGRAPH 2004, ACM Trans. Graphics 23, 760-768 (2004).
  2. H. Seetzen, L. A. Whitehead, G. Ward, "A high dynamic range display using low and high resolution modulators," SID Symp. Dig. Tech Papers (2003) pp. 1450-1453.
  3. E. Y. Oh, S. H. Baik, M. H. Sohn, K. D. Kim, H. J. Hong, J. Y. Bang, K. J. Kwon, M. H. Kim, H. Jang, J. K. Yoon, I. J. Chung, "IPS-mode dynamic LCD-TV realization with low black luminance and high contrast by adaptive dynamic image control technology," J. Soc. Inf. Display 13, 215-219 (2005).
  4. Y. W. Wang, Y. K. Cheng, H. P. D. Shieh, T. M. Wang, H. W. R. Lin, "Analyses of point spread function in high dynamic range display system," Opt. Photon. Taiwan 2005 (2005).
  5. F. C. Lin, C. Y. Liao, L. Y. Liao, Y. P. Huang, H. P. D. Shieh, "Inverse of mapping function method for image quality enhancement of high dynamic range LCD TVs," SID Symp. Dig. Tech Papers (2007) pp. 1343-1346.
  6. R. C. Gonzalez, R. E. Woods, Digital Image Processing (Prentice-Hall, 2002) pp. 75-214.
  7. T. C. Jen, H. Brian, S. J. Wang, "Image contrast enhancement based on intensity-pair distribution," Proc. IEEE'05 Int. Conf. Image Process. (2005) pp. I-913.
  8. I. Frosio, G. Ferrigno, N. A. Borghese, "Enhancing digital cephalic radiography with mixture models and local gamma correction," IEEE Trans Med. Imag. 25, 113-121 (2006).
  9. T. C. Hsu, T. M. Lin, Y. C. Chen, "Fuzzy contrast correction (FCC) for image contrast enhancement," SID Symp. Dig. Tech. Papers (2006) pp. 303-305.
  10. C. C. Sun, S. J. Ruan, M. C. Shie, T. W. Pai, "Dynamic contrast enhancement based on histogram specification," IEEE Trans Consumer Electron. 51, 1300-1305 (2005).
  11. L. Y. Liao, F. C. Lin, Y. P. Huang, H. P. D. Shieh, S. C. Yeh, "A real-time liquid crystal signal compensation method for high dynamic range LCD," IDW'07 14, DES5-1L (2007).
  12. L. Kerofsky, "Brightness preservation for LCD backlight dimming," J. Soc. Inf. Display 14, 1111-1118 (2006).
  13. High-Dynamic-Range (HDR) Vision (Springer, 2007) pp. 1-4.
  14. Konica Minolta Sensing, Inc.Measurement Instruments CA-210, Retrieved Dec. 27th, (2007) http://www.konicaminolta.com/instruments/products/display/color-analyzer/ca210/features.html.

2007

L. Y. Liao, F. C. Lin, Y. P. Huang, H. P. D. Shieh, S. C. Yeh, "A real-time liquid crystal signal compensation method for high dynamic range LCD," IDW'07 14, DES5-1L (2007).

2006

L. Kerofsky, "Brightness preservation for LCD backlight dimming," J. Soc. Inf. Display 14, 1111-1118 (2006).

I. Frosio, G. Ferrigno, N. A. Borghese, "Enhancing digital cephalic radiography with mixture models and local gamma correction," IEEE Trans Med. Imag. 25, 113-121 (2006).

2005

C. C. Sun, S. J. Ruan, M. C. Shie, T. W. Pai, "Dynamic contrast enhancement based on histogram specification," IEEE Trans Consumer Electron. 51, 1300-1305 (2005).

E. Y. Oh, S. H. Baik, M. H. Sohn, K. D. Kim, H. J. Hong, J. Y. Bang, K. J. Kwon, M. H. Kim, H. Jang, J. K. Yoon, I. J. Chung, "IPS-mode dynamic LCD-TV realization with low black luminance and high contrast by adaptive dynamic image control technology," J. Soc. Inf. Display 13, 215-219 (2005).

Y. W. Wang, Y. K. Cheng, H. P. D. Shieh, T. M. Wang, H. W. R. Lin, "Analyses of point spread function in high dynamic range display system," Opt. Photon. Taiwan 2005 (2005).

2004

H. Seetzen, W. Heidrich, W. Stuerzlinger, G. Ward, L. W. M. Trentacoste, A. Ghosh, A. Vorozcovs, "High dynamic range display systems," SIGGRAPH 2004, ACM Trans. Graphics 23, 760-768 (2004).

IDW'07

L. Y. Liao, F. C. Lin, Y. P. Huang, H. P. D. Shieh, S. C. Yeh, "A real-time liquid crystal signal compensation method for high dynamic range LCD," IDW'07 14, DES5-1L (2007).

IEEE Trans Med. Imag.

I. Frosio, G. Ferrigno, N. A. Borghese, "Enhancing digital cephalic radiography with mixture models and local gamma correction," IEEE Trans Med. Imag. 25, 113-121 (2006).

IEEE Trans Consumer Electron.

C. C. Sun, S. J. Ruan, M. C. Shie, T. W. Pai, "Dynamic contrast enhancement based on histogram specification," IEEE Trans Consumer Electron. 51, 1300-1305 (2005).

J. Soc. Inf. Display

L. Kerofsky, "Brightness preservation for LCD backlight dimming," J. Soc. Inf. Display 14, 1111-1118 (2006).

E. Y. Oh, S. H. Baik, M. H. Sohn, K. D. Kim, H. J. Hong, J. Y. Bang, K. J. Kwon, M. H. Kim, H. Jang, J. K. Yoon, I. J. Chung, "IPS-mode dynamic LCD-TV realization with low black luminance and high contrast by adaptive dynamic image control technology," J. Soc. Inf. Display 13, 215-219 (2005).

Opt. Photon. Taiwan 2005

Y. W. Wang, Y. K. Cheng, H. P. D. Shieh, T. M. Wang, H. W. R. Lin, "Analyses of point spread function in high dynamic range display system," Opt. Photon. Taiwan 2005 (2005).

SIGGRAPH 2004, ACM Trans. Graphics

H. Seetzen, W. Heidrich, W. Stuerzlinger, G. Ward, L. W. M. Trentacoste, A. Ghosh, A. Vorozcovs, "High dynamic range display systems," SIGGRAPH 2004, ACM Trans. Graphics 23, 760-768 (2004).

Other

H. Seetzen, L. A. Whitehead, G. Ward, "A high dynamic range display using low and high resolution modulators," SID Symp. Dig. Tech Papers (2003) pp. 1450-1453.

T. C. Hsu, T. M. Lin, Y. C. Chen, "Fuzzy contrast correction (FCC) for image contrast enhancement," SID Symp. Dig. Tech. Papers (2006) pp. 303-305.

F. C. Lin, C. Y. Liao, L. Y. Liao, Y. P. Huang, H. P. D. Shieh, "Inverse of mapping function method for image quality enhancement of high dynamic range LCD TVs," SID Symp. Dig. Tech Papers (2007) pp. 1343-1346.

R. C. Gonzalez, R. E. Woods, Digital Image Processing (Prentice-Hall, 2002) pp. 75-214.

T. C. Jen, H. Brian, S. J. Wang, "Image contrast enhancement based on intensity-pair distribution," Proc. IEEE'05 Int. Conf. Image Process. (2005) pp. I-913.

High-Dynamic-Range (HDR) Vision (Springer, 2007) pp. 1-4.

Konica Minolta Sensing, Inc.Measurement Instruments CA-210, Retrieved Dec. 27th, (2007) http://www.konicaminolta.com/instruments/products/display/color-analyzer/ca210/features.html.

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