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研究生:蔡林牧
研究生(外文):Lin-mu Tsai
論文名稱:利用三色感測器與特徵光譜校正色度座標與與色彩光譜之研究
論文名稱(外文):Research of the chromaticity coordinates and color spectrum calibration using tristimulus sensors and eigenspectrum methods
指導教授:歐陽盟歐陽盟引用關係
指導教授(外文):Mang OuYang
學位類別:碩士
校院名稱:國立中央大學
系所名稱:光電科學研究所碩士在職專班
學門:工程學門
學類:電資工程學類
論文出版年:2009
畢業學年度:97
語文別:中文
論文頁數:74
中文關鍵詞:三色感測器色彩光譜
外文關鍵詞:measuring instrumentspectrum information
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色彩量測儀器概分為光譜儀與色度儀兩種,其目的為以科學的方法用數值對色彩加以判斷,取代以眼睛判斷色彩之主觀意識,前者利用稜鏡亦或光柵以分光光譜進行量測,其結果精確唯造價較高,後者利用濾光片以讀取三色剌激值,雖然能夠正確的讀出三色剌激值卻無法還原光譜,本研究創立一套以三個光感應器做為量測主軸之色彩量測系統,能成功的量測出色彩資訊,並以演算法加以校正,有效的將平均誤差值由ΔEab = 31.2398 降為ΔEab= 0.8431,且成功的將待測光譜還原。
The purpose of color measuring instrument is judging the colorinformation by scientific method, which may instead of the human’s eyes.Generally, the instruments of color measuring can be divided intospectrophotometer and color meter. The former may use prism or gratingto separate the light to transmit to a receiver, this could achieve highaccuracy but with a higher price. The latter mean the straight tristimulusfrom color filter, however there is no spectrum information with it.
In this thesis we establish a color measuring system was developed with three sensors, which can acquire the color spectral reflectance. Then we can use the specific algorithm to correct the average inaccuracy ΔEab amount 31.2398 down to 0.8431, and reconstruct the spectrum
information.
目錄      
摘要 ……………………………………………………………… i
Abstract ……………………………………………………………… ii
誌謝 ……………………………………………………………… iii
目錄 ……………………………………………………………… iv
圖目錄 ……………………………………………………………… vi
表目錄 ……………………………………………………………… vii

一、 緒論………………………………………………………… 1
1-1 前言………………………………………………………… 1
1-2 研究動機與目地…………………………………………… 1

二、 色彩光學與量測簡介……………………………………… 3
2-1 視覺要素…………………………………………………… 3
2-2 色彩表示體系……………………………………………… 8
2-3 光度量……………………………………………………… 15
2-4 色彩量測…………………………………………………… 17

三、 光訊號量測電路設計……………………………………… 19
3-1 設計概念…………………………………………………… 19
3-2 光接收器…………………………………………………… 20
3-3 訊號選擇與類比/數位轉換器……………………………… 22
3-4 訊號處理器………………………………………………… 27
3-5 電路特性確認……………………………………………… 32

四、 色度座標與光譜誤差校正理論…………………………… 34
4-1 光譜對色彩訊號的影響…………………………………… 34
4-2 利用還原光譜修正誤差…………………………………… 36
4-2-1 相關文獻探討……………………………………………… 36
4-2-2 奇異值分解………………………………………………… 37
4-2-3 特徵光譜還原法…………………………………………… 37
4-2-4 最小平方近似法…………………………………………… 39
4-3 利用雙光源還原光譜修正誤差…………………………… 45
4-3-1 雙光源特徵光譜還原法…………………………………… 46
4-3-2 雙光源最小平方近似法…………………………………… 48

五、 實驗結果分析……………………………………………… 52
5-1 實驗方法與量測架構……………………………………… 52
5-2 量測結果…………………………………………………… 56
5-2-1 利用三個感測器量測剌激值……………………………… 56
5-3 使用各校正法校正後之結果……………………………… 61
5-3-1 以特徵光譜還原法對鎢絲燈校正之結果………………… 62
5-3-2 以最小平方近似法對鎢絲燈校正之結果………………… 62
5-3-3 以特徵光譜還原法對氙燈校正之結果…………………… 63
5-3-4 以最小平方誤差法對鎢絲燈校正之結果………………… 64
5-3-5 以雙光源特徵光譜還原法校正之結果…………………… 65
5-3-6 以雙光源最小平方近似法校正之結果…………………… 66
5-4 實驗結果比較……………………………………………… 68

六、 結論與未來展望…………………………………………… 71
6-1 結論………………………………………………………… 71
6-2 未來展望…………………………………………………… 72

參考文獻 ……………………………………………………………… 74
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