Abstract

A low-power contrast enhancement algorithm is proposed for active-matrix organic light-emitting diode (AMOLED) applications in this paper. Compared with the conventional contrast enhancement on global images, the proposed contrast enhancement has been implemented for each histogram segment, respectively, which is better for local contrast. An effective power reduction method to conserve local details is also presented based on the histogram segmentation. Moreover, a self-adaptation power reduction mechanism is further employed to achieve the tradeoff between the image quality and the power consumption for videos. Finally, the algorithm has been implemented on a FPGA with a 2.8-in AMOLED panel. The simulation and experimental results demonstrate that power consumption is reduced by 30%–40% using the algorithm, while keeping a good image quality.

© 2014 IEEE

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  1. M. Stewart, R. S. Howell, L. Pires, M. K. Hatalis, W. Howard, O. Parche, "Polysilicon VGA active matrix OLED displays-technology and performance," Proc. Int. Electron Devices Meeting (1998) pp. 871-874.
  2. R. M. A. Dawson, Z. Shen, D. A. Furst, S. Connor, J. Hsu, M. G. Kane, R. G. Stewart, A. Ipri, C. N. King, P. J. Green, R. T. Flegal, S. Pearson, C. W. Tang, S. Van Slyke, F. Chen, J. Shi, M. H. Lu, J. C. Sturm, "The impact of the transient response of organic light emitting diodes on the design of active matrix OLED displays," Proc. Int. Electron Devices Meeting (1998) pp. 875-878.
  3. C. Lee, C. Lee, C.-S. Kim, "Power-constrained contrast enhancement for OLED displays based on histogram equalization," Proc. IEEE Conf. Image Process. (2010) pp. 1689-1692.
  4. R. C. Gonzalez, R. E. Woods, Digital Image Processing (Publishing House of Electronics Industry, 2010) pp. 142-166.
  5. T. Arici, S. Dikbas, Y. Altunbasak, "A histogram modification framework and its application for image contrast enhancement," IEEE Trans. Image Process. 18, 1921-1935 (2009).
  6. Q. Wang, R. K. Ward, "Fast image/video contrast enhancement based on weighted thresholded histogram equalization," IEEE Trans. Consumer Electron. 53, 757-764 (2007).
  7. J. V. Vegte, Fundamentals of Digital Signal Processing (Publishing House of Electronics Industry, 2003) pp. 157-161.
  8. M. Dong, L. Zhong, "Power modeling and optimization for OLED displays," IEEE Trans. Mobile Computing 11, 1587-1599 (2012).
  9. S.-C. Hsu, S.-F. Liang, C.-T. Lin, "A robust digital image stabilization technique based on inverse triangle method and background detection," IEEE Trans. Consumer Electron. 51, 335-345 (2005).
  10. A. R. Jimenez-Sanchez, J. D. Mendiola-Santibanez, I. R. Terol-Villalobos, G. Herrera-Ruiz, D. Vargas-Vazquez, J. J. Garcia-Escalante, A. Lara-Guevara, "Morphological background detection and enhancement of images with poor lighting," IEEE Trans. Image Process. 18, 613-623 (2009).

2012

M. Dong, L. Zhong, "Power modeling and optimization for OLED displays," IEEE Trans. Mobile Computing 11, 1587-1599 (2012).

2009

T. Arici, S. Dikbas, Y. Altunbasak, "A histogram modification framework and its application for image contrast enhancement," IEEE Trans. Image Process. 18, 1921-1935 (2009).

A. R. Jimenez-Sanchez, J. D. Mendiola-Santibanez, I. R. Terol-Villalobos, G. Herrera-Ruiz, D. Vargas-Vazquez, J. J. Garcia-Escalante, A. Lara-Guevara, "Morphological background detection and enhancement of images with poor lighting," IEEE Trans. Image Process. 18, 613-623 (2009).

2007

Q. Wang, R. K. Ward, "Fast image/video contrast enhancement based on weighted thresholded histogram equalization," IEEE Trans. Consumer Electron. 53, 757-764 (2007).

2005

S.-C. Hsu, S.-F. Liang, C.-T. Lin, "A robust digital image stabilization technique based on inverse triangle method and background detection," IEEE Trans. Consumer Electron. 51, 335-345 (2005).

IEEE Trans. Consumer Electron.

Q. Wang, R. K. Ward, "Fast image/video contrast enhancement based on weighted thresholded histogram equalization," IEEE Trans. Consumer Electron. 53, 757-764 (2007).

IEEE Trans. Image Process.

T. Arici, S. Dikbas, Y. Altunbasak, "A histogram modification framework and its application for image contrast enhancement," IEEE Trans. Image Process. 18, 1921-1935 (2009).

A. R. Jimenez-Sanchez, J. D. Mendiola-Santibanez, I. R. Terol-Villalobos, G. Herrera-Ruiz, D. Vargas-Vazquez, J. J. Garcia-Escalante, A. Lara-Guevara, "Morphological background detection and enhancement of images with poor lighting," IEEE Trans. Image Process. 18, 613-623 (2009).

IEEE Trans. Consumer Electron.

S.-C. Hsu, S.-F. Liang, C.-T. Lin, "A robust digital image stabilization technique based on inverse triangle method and background detection," IEEE Trans. Consumer Electron. 51, 335-345 (2005).

IEEE Trans. Mobile Computing

M. Dong, L. Zhong, "Power modeling and optimization for OLED displays," IEEE Trans. Mobile Computing 11, 1587-1599 (2012).

Other

J. V. Vegte, Fundamentals of Digital Signal Processing (Publishing House of Electronics Industry, 2003) pp. 157-161.

M. Stewart, R. S. Howell, L. Pires, M. K. Hatalis, W. Howard, O. Parche, "Polysilicon VGA active matrix OLED displays-technology and performance," Proc. Int. Electron Devices Meeting (1998) pp. 871-874.

R. M. A. Dawson, Z. Shen, D. A. Furst, S. Connor, J. Hsu, M. G. Kane, R. G. Stewart, A. Ipri, C. N. King, P. J. Green, R. T. Flegal, S. Pearson, C. W. Tang, S. Van Slyke, F. Chen, J. Shi, M. H. Lu, J. C. Sturm, "The impact of the transient response of organic light emitting diodes on the design of active matrix OLED displays," Proc. Int. Electron Devices Meeting (1998) pp. 875-878.

C. Lee, C. Lee, C.-S. Kim, "Power-constrained contrast enhancement for OLED displays based on histogram equalization," Proc. IEEE Conf. Image Process. (2010) pp. 1689-1692.

R. C. Gonzalez, R. E. Woods, Digital Image Processing (Publishing House of Electronics Industry, 2010) pp. 142-166.

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