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Author: 陳昕陽
Chen, Hsin-Yang
Thesis Title: 彩色電子紙之色彩量測與影像處理晶片設計
Color Measurement and Image Processing Chip Design of Color Electronic Paper
Advisor: 高文忠
Kao, Weng-Chung
Committee: 高文忠
Kao, Weng-Chung
林政宏
Lin, Cheng-Hung
郭景明
Guo, Jing-Ming
Approval Date: 2021/06/28
Degree: 碩士
Master
Department: 電機工程學系
Department of Electrical Engineering
Thesis Publication Year: 2021
Academic Year: 109
Language: 中文
Number of pages: 65
Keywords (in Chinese): 彩色電子紙色彩校正色調重現
Keywords (in English): color electronic paper, color correction, tone reproduction
Research Methods: 實驗設計法準實驗設計法
DOI URL: http://doi.org/10.6345/NTNU202101190
Thesis Type: Academic thesis/ dissertation
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  • 本論文提出一個新穎的彩色電子紙之色彩量測與彩色影像處理流程。為了準確量測電子紙上的色彩,我們提出兩階段色彩校正方法,改善色彩量測的精準度,改進後的色彩量測系統已成功地應用在彩色電子紙的量產上。所提出的色彩校正方法也同樣適用於監視系統或機器人視覺。彩色電子紙的影像處理流程由幾個階段所組成,透過完整的影像處理流程來校正彩色電子紙上所顯示的色彩,並增強色彩飽和度以及提高影像的可見度。除了色彩重現之外,處理後的影像細節也得到了改善。整個影像處理流程已在晶片平台上實現,且可高效的執行。

    This thesis presents a new approach to the color measurement and a novel design of image processing pipeline for color electronic papers. In order to accurately measure the color on the electronic paper, a two-stage color correction method based on an efficient optimization process has been proposed for the color reproduction of the camera. The improved color measurement system has been successfully applied to the mass production line of color electronic paper. The proposed color correction method is also suitable for being applied to surveillance systems or robot vision systems. The image processing pipeline for color electronic papers is composed of several stages to correct the colors displayed on the color electronic paper, enhance the color saturation, and improve the visibility of the images via a comprehensive tone reproduction. In addition to the color reproduction, the image details of the processed images are also improved. The entire image pipeline has been implemented on the FPGA platform and the excellent performance can be achieved.

    誌謝 i 摘 要 ii ABSTRACT iii 圖目錄 vi 表目錄 ix 1. 第一章 緒論 1 1.1研究背景 1 1.2研究問題 2 1.2.1彩色電子紙之色彩量測 2 1.2.2彩色電子紙之彩色影像處理 3 1.3論文架構 6 2. 第二章 文獻探討 7 2.1相機影像色彩處理流程 7 2.2彩色電子紙影像色彩處理流程 10 3. 第三章 研究方法 12 3.1彩色電子紙色彩量測的系統架構 12 3.1.1色卡資訊 13 3.1.2暗電消去與雙邊濾波 14 3.1.3鏡頭漸暈補償 15 3.1.4自動白平衡 16 3.1.5色彩校正矩陣 17 3.2彩色電子紙影像處理流程 22 3.2.1彩色電子紙的色彩校正 23 3.2.2色調重現與色彩增強 23 3.2.3半色調影像處理 25 3.3彩色電子紙晶片設計系統架構 26 3.3.1色彩校正矩陣 27 3.3.2色彩空間轉換 27 3.3.3色調映射 28 3.3.4半色調影像處理晶片設計 28 4. 第四章 實驗結果 33 4.1實驗環境與設備 33 4.2色彩量測結果呈現 35 4.2.1鏡頭漸暈補償結果比較 36 4.2.2自動白平衡結果 37 4.2.3色彩誤差比較 38 4.3彩色電子紙影像處理結果 40 4.3.1 彩色電子紙色彩校正 40 4.3.2 彩色電子紙色調重現 44 4.3.3 彩色電子紙色彩增強 45 4.3.4 彩色電子紙之結果 45 4.3.5 彩色電子紙影像處理晶片執行效能 47 5. 第五章 結論及未來展望 48 5.1 結論 48 參考文獻 49 附錄 53 自 傳 64 學術成就 65

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