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科技與工程學院
電機工程學系
學位論文
學位論文
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http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/73890
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search.filters.author.黃鈺珊
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search.filters.author.Huang, Yu-Shan
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search.filters.subject.色彩校正
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search.filters.subject.Color Correction
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search.filters.subject.Color Electronic Paper
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search.filters.subject.Color Measurement
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search.filters.subject.Front Light Selection
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search.filters.subject.前光選擇
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彩色電子紙的高效前光選擇法
(
2025
)
黃鈺珊
;
Huang, Yu-Shan
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彩色電子紙透過黑白電子泳顯示器搭配彩色濾光片呈現色彩,但受限於結構,亮度與色彩飽和度不足。前光面板可提升亮度與色彩,然而不同前光組合對色彩再現影響顯著,如何依影像內容選擇最適前光成為關鍵課題。本研究提出根據影像內容決定前光選擇演算法,依據輸入影像的代表色,自動推估最佳前光參數。方法為先分析影像主色調,並利用反距離加權法,從 27 組量測樣本中內插最佳前光組合,再以三維三角剖分模型估算該前光下的色域範圍。為修正前光引起的整體色偏,建立色彩轉換矩陣將影像由標準光源色域轉換至當前前光條件,並計算色彩校正矩陣補償裝置非線性失真。運算過程以粒子群最佳化加速,同時結合亮度增強與誤差擴散半色調技術,提升細節與低亮區域可視性,並符合彩色電子紙顯示特性。結果顯示,本方法能有效改善不同前光條件下的色彩一致性與影像品質,具實用性與可行性。
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