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研究生: 黃柏翰
Huang, Po-Han
論文名稱: 彩色濾光片電子紙之色彩重現影像處理
Color Reproduction for Color Filter Array Electronic Paper
指導教授: 高文忠
Kao, Wen-Chung
口試委員: 高文忠
Kao, Wen-Chung
范育成
Fan, Yu-Cheng
賴以威
Lai, I-Wei
口試日期: 2024/07/24
學位類別: 碩士
Master
系所名稱: 電機工程學系
Department of Electrical Engineering
論文出版年: 2024
畢業學年度: 112
語文別: 英文
論文頁數: 65
中文關鍵詞: 彩色電子紙彩色濾波片色彩重現設備色彩特性影像處理
英文關鍵詞: color electronic paper, color filter array, color reproduction, device colorimetric characterization, image processing
研究方法: 調查研究紮根理論法比較研究觀察研究
DOI URL: http://doi.org/10.6345/NTNU202401425
論文種類: 學術論文
相關次數: 點閱:136下載:13
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  • 印刷式彩色濾光陣列電子紙具有快速驅動和準確色彩控制的優勢。然而,它的色域比多色彩電子紙狹窄,且輸出響應曲線通常是非線性的,這導致顏色和色調再現困難。本論文討論了傳統影像處理流程在這種新型彩色電子紙上的應用問題,並提出了解決非線性響應問題的方法。通過這種新影像流程,可以顯著改善顯示品質。

    The color electronic paper (e-paper) based on a printed color filter array offers the advantage of rapid driving capability and accurate intensity control for each color channel. However, its color gamut is comparatively narrower than that of multi-pigment color e-paper, and the output response curve is generally nonlinear. This leads to difficulties in color and tone reproduction when displaying an image on this new color e-paper. This paper discusses the practical issue of applying the traditional image processing pipeline to this new color e-paper and proposes an alternative approach to address the nonlinear response issue in printed color e-paper. With the proposed image pipeline, significant improvements in display quality can be achieved.

    Chapter 1 Introduction 1 1.1 Background 1 1.2 Objectives 4 1.2.1 Colorimetric Device Model of CFA e-Papers 5 1.2.2 Image Processing of Color Reproduction for CFA e-Paper 5 1.2.3 CFA e-Paper Halftoning 6 1.3 Thesis Structure 7 Chapter 2 Literature Review 8 2.1 Color Correction Matrix 9 2.2 Gamut Mapping 12 2.3 Device Colorimetric Characterization 14 2.4 e-Paper Halftoning 16 2.4.1 Nearest Neighbor Search 17 Chapter 3 Methodology 19 3.1 Device Characterization 19 3.1.1 Monotone Piecewise Cubic Interpolation 22 3.1.2 Monotone Piecewise Bicubic Interpolation 24 3.1.3 Interpolation for Device Colorimetric Model 27 3.2 Image Processing Pipeline 29 3.3 Color Enhancement 29 3.4 Tone Reproduction 32 3.5 Gamut Mapping 34 3.6 Halftoning Technique 40 3.6.1 Nearest Neighbor Search 41 Chapter 4 Experimental Results 44 4.1 Experimental environment and equipment 44 4.2 Gamut mapping results comparison 44 4.2.1 Statistical comparison of gamut mapping results 47 4.3 Comparison of results for color enhancement and tone reproduction 48 4.3.1 Color difference comparison 50 4.4 Comparison with traditional pipeline output results 50 Chapter 5 Conclusions and Future Work 53 5.1 Conclusion 53 5.2 Future Work 53 References 54

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