Integrating photometric calibration with adaptive image halftoning for electrophoretic displays

Wen Chung Kao; Jen Jui Liu; Ming I. Chu

doi:10.1109/JDT.2010.2068035

Integrating photometric calibration with adaptive image halftoning for electrophoretic displays

Wen Chung Kao^*, Jen Jui Liu, Ming I. Chu

^*Corresponding author for this work

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

The electrophoretic display (EPD) has become the main solution to electronic papers, but there are several limitations when it is being driven. First of all, the optical response curve of the EPD is nonlinear and temperature sensitive. In addition, the number of gray levels that can be displayed is also quite limited. The image quality is unsatisfactory if the images shown on the panel are not preprocessed to increase the number of visual gray levels and compensate the characteristics of the EPD. In this paper, we present an integrated image tool to automatically estimate the reflectance function curves under different ambient temperatures, perform adaptive image halftoning to improve visual quality, and calibrate the image to compensate the nonlinear response of EPD. The proposed approach has been verified on practical EPD panels and promising results have been achieved.

Original language	English
Article number	5630998
Pages (from-to)	625-632
Number of pages	8
Journal	IEEE/OSA Journal of Display Technology
Volume	6
Issue number	12
DOIs	https://doi.org/10.1109/JDT.2010.2068035
Publication status	Published - 2010

Keywords

Electrophoretic display (EPD)
display calibration
electronic paper
image enhancement
temperature compensation

ASJC Scopus subject areas

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

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10.1109/JDT.2010.2068035

Cite this

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title = "Integrating photometric calibration with adaptive image halftoning for electrophoretic displays",

abstract = "The electrophoretic display (EPD) has become the main solution to electronic papers, but there are several limitations when it is being driven. First of all, the optical response curve of the EPD is nonlinear and temperature sensitive. In addition, the number of gray levels that can be displayed is also quite limited. The image quality is unsatisfactory if the images shown on the panel are not preprocessed to increase the number of visual gray levels and compensate the characteristics of the EPD. In this paper, we present an integrated image tool to automatically estimate the reflectance function curves under different ambient temperatures, perform adaptive image halftoning to improve visual quality, and calibrate the image to compensate the nonlinear response of EPD. The proposed approach has been verified on practical EPD panels and promising results have been achieved.",

keywords = "Electrophoretic display (EPD), display calibration, electronic paper, image enhancement, temperature compensation",

author = "Kao, {Wen Chung} and Liu, {Jen Jui} and Chu, {Ming I.}",

note = "Funding Information: Manuscript received May 25, 2010; revised July 25, 2010; accepted July 29, 2010. Date of current version November 12, 2010. This work was supported in part by the National Science Council of Republic of China under NSC 98-2622-E-003-003-CC1, NSC 99-2221-E-003-028, and by SiPix Technology Inc., Taiwan.",

year = "2010",

doi = "10.1109/JDT.2010.2068035",

language = "English",

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AU - Kao, Wen Chung

AU - Liu, Jen Jui

AU - Chu, Ming I.

N1 - Funding Information: Manuscript received May 25, 2010; revised July 25, 2010; accepted July 29, 2010. Date of current version November 12, 2010. This work was supported in part by the National Science Council of Republic of China under NSC 98-2622-E-003-003-CC1, NSC 99-2221-E-003-028, and by SiPix Technology Inc., Taiwan.

PY - 2010

Y1 - 2010

N2 - The electrophoretic display (EPD) has become the main solution to electronic papers, but there are several limitations when it is being driven. First of all, the optical response curve of the EPD is nonlinear and temperature sensitive. In addition, the number of gray levels that can be displayed is also quite limited. The image quality is unsatisfactory if the images shown on the panel are not preprocessed to increase the number of visual gray levels and compensate the characteristics of the EPD. In this paper, we present an integrated image tool to automatically estimate the reflectance function curves under different ambient temperatures, perform adaptive image halftoning to improve visual quality, and calibrate the image to compensate the nonlinear response of EPD. The proposed approach has been verified on practical EPD panels and promising results have been achieved.

AB - The electrophoretic display (EPD) has become the main solution to electronic papers, but there are several limitations when it is being driven. First of all, the optical response curve of the EPD is nonlinear and temperature sensitive. In addition, the number of gray levels that can be displayed is also quite limited. The image quality is unsatisfactory if the images shown on the panel are not preprocessed to increase the number of visual gray levels and compensate the characteristics of the EPD. In this paper, we present an integrated image tool to automatically estimate the reflectance function curves under different ambient temperatures, perform adaptive image halftoning to improve visual quality, and calibrate the image to compensate the nonlinear response of EPD. The proposed approach has been verified on practical EPD panels and promising results have been achieved.

KW - Electrophoretic display (EPD)

KW - display calibration

KW - electronic paper

KW - image enhancement

KW - temperature compensation

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JF - IEEE/OSA Journal of Display Technology

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M1 - 5630998

ER -

Integrating photometric calibration with adaptive image halftoning for electrophoretic displays

Abstract

Keywords

ASJC Scopus subject areas

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