Design of real-time image processing engine for electrophoretic displays

Wen Chung Kao*, Guan Fan Wu, Yi Liang Shih, Wei De Chang, Fong Shou Lin, Yao Jen Hsieh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


In this paper, we propose a real-time hardware engine that performs the image halftoning as well as the photometric calibration for coping with nonlinear optical response of electrophoretic displays (EPDs). The engine quantizes an input image into fewer gray levels on the fly to accommodate the EPD characteristics. Since the number of available gray levels as well as the electro-optical response is temperature dependent, the engine performs adaptive image processing based on temperature dependent characteristics. The experimental results show that the performance of the proposed hardware engine meets the specification of real-time applications, and the quality of the displayed image can be significantly improved.

Original languageEnglish
Article number6011664
Pages (from-to)556-561
Number of pages6
JournalIEEE/OSA Journal of Display Technology
Issue number10
Publication statusPublished - 2011


  • Electrophoretic display (EPD)
  • display calibration
  • hardware engine
  • image enhancement
  • temperature compensation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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