Dual Modulation for LED-Backlit HDR Displays

High dynamic range (HDR) and wide color gamut video processing have started to receive significant research attention in recent years, especially in relation to content generation and processing. However, displaying such content is still a challenge, and efforts are required to make their deployment possible at consumer levels. While the emergence of locally backlit displays has helped to achieve higher contrast in the display of traditional low dynamic range videos, their use for displaying HDR videos is nontrivial. This chapter, therefore, aims to first identify a few challenges in this area. It then outlines a new dual modulation algorithm for the rendering of HDR content. It also discusses practical lessons that can be helpful toward the rendering of more accurate and visually appealing HDR content.

[1]  Xiaolin Wu,et al.  Modeling Power-Constrained Optimal Backlight Dimming for Color Displays , 2013, Journal of Display Technology.

[2]  Woo-Jin Song,et al.  A clipping reduction algorithm using backlight luminance compensation for local dimming liquid crystal displays , 2010, IEEE Transactions on Consumer Electronics.

[3]  Andreas Karrenbauer,et al.  Sorted Sector Covering Combined with Image Condensation - An Efficient Method for Local Dimming of Direct-Lit and Edge-Lit LCDs , 2010, IEICE Trans. Electron..

[4]  Munisamy Anandan.  Progress of LED backlights for LCDs , 2008 .

[5]  Hyunsuk Cho,et al.  A color local dimming algorithm for liquid crystals displays using color light emitting diode backlight systems , 2013 .

[6]  Xiaolin Wu,et al.  Optimal local dimming for LC image formation with controllable backlighting , 2013, IEEE Transactions on Image Processing.

[7]  Jiang-Hong Han,et al.  Dynamic Backlight Adaptation Based on the Details of Image for Liquid Crystal Displays , 2012, Journal of Display Technology.

[8]  Young Hwan Kim,et al.  Image integrity-based gray-level error control for low power liquid crystal displays , 2009, IEEE Transactions on Consumer Electronics.

[9]  Jari Korhonen,et al.  Adaptive local backlight dimming algorithm based on local histogram and image characteristics , 2013, Electronic Imaging.

[10]  Tae-Hyeun Ha,et al.  Locally pixel‐compensated backlight dimming on LED‐backlit LCD TV , 2007 .

[11]  Lin-Yao Liao,et al.  Dynamic Backlight Gamma on High Dynamic Range LCD TVs , 2008, Journal of Display Technology.

[12]  Woo-Jin Song,et al.  How to reduce light leakage and clipping in local‐dimming liquid‐crystal displays , 2009 .

[13]  Oh-Kyong Kwon,et al.  A backlight dimming algorithm for low power and high image quality LCD applications , 2009, IEEE Transactions on Consumer Electronics.

[14]  Hi-Seok Kim,et al.  Two-step local dimming for image quality preservation in LCD displays , 2011, 2011 International SoC Design Conference.

[15]  Xiaolin Wu,et al.  Image dependent energy-constrained local backlight dimming , 2012, 2012 19th IEEE International Conference on Image Processing.

[16]  G. Ward,et al.  54.2: A High Dynamic Range Display Using Low and High Resolution Modulators , 2003 .

[17]  Wolfgang Heidrich,et al.  High dynamic range display systems , 2004, SIGGRAPH 2004.

[18]  H. Nam.  Low power active dimming liquid crystal display with high resolution backlight , 2011 .

[19]  Charles A. Poynton,et al.  A technical introduction to digital video , 1996 .

[20]  Young Hwan Kim,et al.  Multi-Histogram-Based Backlight Dimming for Low Power Liquid Crystal Displays , 2011, Journal of Display Technology.

[21]  Chih-Chang Lai,et al.  Backlight power reduction and image contrast enhancement using adaptive dimming for global backlight applications , 2008, IEEE Transactions on Consumer Electronics.