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研究生: 蔡智宇
Chih-Yu Tsai
論文名稱: 色彩感測器應用於醫療用液晶顯示器亮度與色彩量測之訓練樣本選擇
Training sample selection for color sensor applied to medical LCD monitor with luminance and color measurement
指導教授: 李宗憲
Tsung-Xian Lee
口試委員: 李宗憲
孫沛立
陳鴻興
學位類別: 碩士
Master
系所名稱: 應用科技學院 - 色彩與照明科技研究所
Graduate Institute of Color and Illumination Technology
論文出版年: 2021
畢業學年度: 109
語文別: 中文
論文頁數: 72
中文關鍵詞: 液晶顯示器色彩校正多項式回歸訓練樣本選擇
外文關鍵詞: Liquid Crystal Display, color calibration, polynomial regression, training sample selection
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  • 隨著5G通訊時代來臨和人工智慧物聯網技術的快速提升,智慧生活越來越被人們所重視。對於醫療領域來說,更大尺寸、更高解析度以及更高顯示規格的醫療用顯示器是不可或缺的。

    鑒於顯示器在長時間使用下會因為操作溫度的上升,產生色衰變和光效降低的情形,進而導致顯示器產生光色飄移,因此建立一套能夠即時針對顯示器本身進行亮度及色彩校正的系統是應用上的一大重點。

    為了達成此目的,便需要使用感測設備長時間測量顯示器的光色變化,而本論文以RGB色彩感測元件進
    行測量,並透過多項式回歸的方式建立色彩校正模型。接著針對不同設計及數量的訓練樣本進行亮度與色彩之精確度研究,以此讓 RGB色彩感測元件能夠更加精準地再現標準色度計的量測結果。

    結果表明,在訓練樣本的選擇時,色度及亮度分布的均勻性、樣本如何設計等等因素都會對校正結果產生影響,而本論文針對此進行研究,找出了最佳化的樣本設計方式,並透過常數補償,進一步降低了訓練樣本的總數。


    Along with the 5G communication era and the rapid improvement of Artificial Intelligence of Things, people pay more and more attention to smart life. For the medical field, medical displays with larger sizes, higher resolutions and higher display specifications are indispensable.

    In view of the fact that the display will cause color decay and decrease in light efficiency due to the increase in operating temperature for a long period of time, which will cause the display to produce light color drift. Therefore, it is very important to establish a system that can instantly correct the luminance and color
    of the display itself.

    In order to achieve this goal, it is necessary to use a sensing device to measure the light color change of the display for a long period of time. This paper using RGB color sensor components to measure, and establish a color correction model through polynomial regression. Then, use different designs and different numbers of training samples to research on the accuracy of luminance and color, so that the RGB color sensor can reproduce the measurement results of the standard colorimeter more accurately.

    The results show that in the selection of training samples, factors such as the uniformity of the chromaticity and luminance distribution, how the samples are designed, etc., will affect the calibration results. This paper studies this and finds the optimal sample design method , And through constant compensation, further reducing the total number of training samples.

    目錄 摘要 i Abstract ii 誌謝 iii 目錄 iv 圖目錄 vi 表目錄 ix 第一章 緒論 1 1.1 研究背景 1 1.2 研究動機及目的 2 1.3 論文大綱及架構 3 第二章 文獻探討 4 2.1 色彩特性描述方式 4 2.2 校正矩陣之項次選擇 5 2.3 訓練樣本選擇之研究 7 2.4 醫療用顯示器之要求及規範 7 第三章 實驗初步設計和技術介紹 10 3.1 硬體量測架構及特性分析 10 3.2 色彩校正之統整及相關要素 11 3.2.1 色彩校正模型之建立 11 3.2.2 訓練及測試樣本的設計 13 3.2.3 校正矩陣的建立 13 3.2.4 常數補償之方法介紹 14 3.3 自動化選擇訓練樣本之研究 15 3.3.1 自動化系統建立 16 3.3.2 驗證選擇條件的可行性 19 3.3.3 不同訓練樣本之設計 21 第四章 訓練樣本選取對色彩校正之結果探討 23 4.1 建立最佳化訓練樣本 23 4.1.1 自動化系統之隨機性影響 23 4.1.2 不同樣本設計之校正結果比較 31 4.1.3 最佳化樣本設計之重複性 36 4.2 減少最佳化訓練樣本之研究 38 4.2.1 不同訓練樣本組合之設計 39 4.2.2 不同訓練樣本組合對結果影響之探討 40 4.2.3 進行常數補償對減少訓練樣本之影響 48 第五章 總結及未來展望 52 5.1 結果與討論 52 5.2 未來規劃及展望 53 參考文獻 53 附錄 56

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