拼接式多投影機的自動色彩匹配

以作者查詢圖書館館藏

、以作者查詢臺灣博碩士

、以作者查詢全國書目

、勘誤回報

、線上人數：38

、訪客IP：3.142.197.198

姓名

陳芳鈿(FANG-TIEN CHEN) 查詢紙本館藏

畢業系所

資訊工程學系在職專班

論文名稱

拼接式多投影機的自動色彩匹配
(Automatic color matching for tiled multiple projectors)

相關論文

★ 適用於大面積及場景轉換的視訊錯誤隱藏法	★ 虛擬觸覺系統中的力回饋修正與展現
★ 多頻譜衛星影像融合與紅外線影像合成	★ 腹腔鏡膽囊切除手術模擬系統
★ 飛行模擬系統中的動態載入式多重解析度地形模塑	★ 以凌波為基礎的多重解析度地形模塑與貼圖
★ 多重解析度光流分析與深度計算	★ 體積守恆的變形模塑應用於腹腔鏡手術模擬
★ 互動式多重解析度模型編輯技術	★ 以小波轉換為基礎的多重解析度邊線追蹤技術(Wavelet-based multiresolution edge tracking for edge detection)
★ 基於二次式誤差及屬性準則的多重解析度模塑	★ 以整數小波轉換及灰色理論為基礎的漸進式影像壓縮
★ 建立在動態載入多重解析度地形模塑的戰術模擬	★ 以多階分割的空間關係做人臉偵測與特徵擷取
★ 以小波轉換為基礎的影像浮水印與壓縮	★ 外觀守恆及視點相關的多重解析度模塑

檔案

[Endnote RIS 格式]

[Bibtex 格式]

[相關文章]

[文章引用]

[完整記錄]

[館藏目錄]

[檢視]

[下載]

本電子論文使用權限為同意立即開放。
已達開放權限電子全文僅授權使用者為學術研究之目的，進行個人非營利性質之檢索、閱讀、列印。
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。

摘要(中)

要產生大螢幕，一種經濟的方法是使用多部投影機去拼接，但是由於不同的電子元件及燈泡的緣故，使得每一部投影機都有它個別的亮度及色彩特性，整個拼接螢幕就顯示出不均勻的色彩及亮度。
在這篇研究中，我們使用一台攝影機去捕捉這個拼接螢幕，並提出兩個自動校正的方法，以解決色彩及亮度不均勻的問題。最後，我們產生回授控制信號到多台投影機，並經由 RS-232 通訊埠自動調整投影機。
我們提出兩種方法做為自動色彩匹配的解決方案，第一種方法是gamma 曲線調整法，它依照亮度最低的投影機，產生己知的 gamma 對照表，再個別地把其他台投影機的 gamma 曲線調整成一樣；第二種方法是色座標調整法，藉由調整每個投影單元的色座標，而達到色彩匹配的目的。使用 gamma 曲線調整法需要調整每一階的 gamma 對照表；而使用色座標調整法則是需要利用晶片內建功能，可攜性較差。兩種方法各有優缺點，所以需要看應用於何種顯示技術以決定採用何種方法。

摘要(英)

To produce a large screen, one economical way is using multiple projectors to tile. However, each projector has its individual luminance and color characteristics due to different electronic components and light bulbs. The tiled screen then appears the non-uniform color and luminance and has blocking effect.
In this study, we use a camera to capture the tiled screen, and propose two automatic calibration methods to resolve the non-uniform color and luminance problems. At last, we generate the feedback control signal to the multiple projectors through the RS-232 port to automatically adjust the projectors.
The first method is gamma curve adjusting method, it uses lowest lightness projector to produce known gamma lookup table, and then use this table to individually adjust the gamma curve of each projector; the second method is color coordinate adjusting method, it adjusts color coordinate of primary color of each projector directly. The first method needs to adjust every step of gamma lookup table, it seems hard; the second method needs to use integrated circuit built-in feature, the portability is not so good. Each method has both advantages and disadvantages. Users need to decide what method will be adopted by their application.

關鍵字(中)

★ 色彩校正
★ 拼接式螢幕
★ 色彩差異
★ 多投影機

關鍵字(英)

★ color calibration
★ color non-uniformity
★ multiple projectors
★ tile screen

論文目次

摘要 iii
Abstract iv
致謝辭 v
目錄 vi
圖目錄 viii
表目錄 x
第 1 章緒論 1
1.1 研究目的與動機 1
1.2 系統簡介 2
1.3 以投影為基礎的拼接式顯示原理 3
1.4 論文架構 4
第 2 章相關設備與研究 5
2.1 投影機的構造與原理 5
2.1.1 液晶顯示投影機 6
2.1.2 數位光處理投影機 8
2.2 Gamma 曲線 10
2.2.1 Gamma 曲線公式 12
2.2.2 求得指數規則曲線的 Gamma 值 13
2.3 白平衡調整 15
2.4 色溫 17
2.5 動態對比 17
2.6 色彩空間轉換 19
2.7 幾何拼接 21
2.8 色彩匹配 21
第 3 章 Gamma 曲線調整法 23
3.1 調整架構 23
3.2 調整前的設定 25
3.3 Gamma 曲線調整 26
第 4 章色座標調整法 32
4.1 CIE 色度圖與色座標 33
4.2 亮度調整 35
4.3 色座標校正 36
第 5 章實驗 41
5.1 實驗環境 41
5.2 取像設備調校 42
5.3 Gamma 曲線調整法 45
5.4 色座標調整法 46
5.5 兩種調整方法的比較 50
第 6 章結論 52
參考文獻 53

參考文獻

[1] Elliott, K. H., K. Ohara, W. B. Werner, and A. J. Kunzman, Color Wheel Synchronization in Multi-frame-rate Display Systems, United States Patent 6,828,961, Dec. 2004.
[2] Funkhouse, T. and K. Li, “Large-format displays,” IEEE Computer Graphics and Applications, vol.20, no.4, pp.20-21, Jul. 2000.
[3] Gonzalez, R. C., R. E. Woods, Digital Image Processing 2nd Edition, Prentice-Hall, Upper Saddle River, New Jersey, 2002.
[4] Heimbuch, S. D., J. B. Sampsell, R. J. Gove, S. W. Marshall, D. B. Doherty, G. L. Sextro, C. W. Davis, and J. G. Egan, Method and Apparatus for Sequential Color Imaging, United States Patent 5,448,314, Sep. 1995.
[5] Hereld, M., I. R. Judson, and R. L. Stevens, “Introduction to building projector-based tiled display systems,” IEEE Computer Graphics and Applications, vol.20, no.4, pp. 22-28, Jul. 2000.
[6] Heuer, A. and H. Suhr, White Balancing Method, United States Patent 6,747,767, Jun. 2004.
[7] Hibi, T., Image Projection Apparatus, United States Patent 6,862,047, Mar. 2005.
[8] Hwang, J.-S., Single-panel Color Image Display Apparatus and Method Thereof, United States Patent 6,588,906, Jul. 2003.
[9] Jack, K., Video Demystified, 3rd Edition, LLH Technology, Eagle Rock, VA, 2001.
[10] Janssen, P. J., Single Panel Color Projection Video Display Improved Scanning,” United States Patent 5,410,370, Apr. 1995.
[11] Li, K., H. Chen, Y. Chen, D. W. Clark, P. Cook, S. Damianakis, G. Essl, A. Finkelstein, T. Funkhouser, T. Housel, A. Kelin, Z. Liu, E. Praun, R. Samanta, B. Shedd, J. P. Singh, G. Tzanetakis, and J. Zheng, “Building and using a scalable display wall system,” IEEE Computer Graphics and Applications, vol.20, no.4, pp.29-37, Jul. 2000.
[12] Majumder, A., Z. He, H. Towles, and G. Welch, “Achieving color uniformity across multiprojector displays,” in Proc. of IEEE Visualization, Salt Lake City, Utah, pp.117-124, Oct. 2000.
[13] Majumder, A., Properties of color variation across a multi-projector display, University of North Carolina, Chapel Hill, NC, 2002.
[14] Morgan, D. J., Secondary Color Boost in Sequential Color Systems, United States Patent 6,567,134, May 2003.
[15] Niwa, S., Color Wheel Including Light Deflecting Means, United States Patent 6,885,512, Apr. 2005.
[16] Ohara, K. and A. J. Kunzman, Common Color Wheel Speed System, United States Patent 6,621,529, Sep. 2003.
[17] Poradish, F. and J. M. Florence, Full-color Projection Display System Using Two Light Modulators, United States Patent 5,905,545, May 1999.
[18] Raskar, R., M. Brown, R. Yang, W.-C. Chen, G. Welch, H. Towles, B. Seales, and H. Fuchs, “Multi-projector displays using camera-based registration,” in Proc. of IEEE Conf. on Visualization, San Fransisco, CA, Oct. 1999.
[19] Schikore, D. R., R. A. Fischer, R. Frank, R. Gaunt, J. Hobson, and B. Whitlock, “High resolution multiprojector display walls,” IEEE Computer Graphics and Applications, vol.20, no.4, pp.38-44, Jul. 2000.
[20] Shioya, Y., Reflective Time-division Image Projector, United States Patent 6,574,046, Jun. 2003.
[21] Stark, S. E., and E. D. Passon, Color Wheel Synchronization Apparatus and Method, United States Patent 5,967,636, Oct. 1999.
[22] Stone, M. C., “Color and brightness appearance issues for tiled displays,” IEEE Computer Graphics and Applications, vol.21, no.5, pp.58-66, Sep. 2001.
[23] Stone, M. C., “Color balancing experimental projection displays,” in Proc. 9th IST/SID Color Imaging Conf., Scottsdale, Arizona, pp.342-347, Nov. 2001.
[24] Tomiya, S., Digital Mirror Device Projector and Method of Controlling Amount of Light Being Used in Digital Mirror Device Projector, United States Patent 6,707,596, Mar. 2004.
[25] Tomiya, S., Digital Mirror Device Projector and Method of Correcting Video Signal Being Used in Digital Mirror Device Projector, United States Patent 6,733,137, May 2004.
[26] Wallace, G., H. Chen, and K. Li, “Color gamut matching for tiled display walls appears,” in Proc. of Immersive Projection Technology Symposium (IPT), May 2003.
[27] Epson, “Epson 3 LCD 液晶投影機,” http://w3.epson.com.tw/imaging/Product/I0/Learn_02.asp, Oct. 2005.
[28] “How DLP technology works,” http://www.dlp.com/dlp_technology/dlp_technology_overview.asp#1
[29] Tseng D. C., Image processing, National Central University, Chung Li, Taiwan, 2004.
[30] Mayer, T., “New options and considerations for creating enhanced viewing experiences,” Computer Graphics, vol.31, no.2, pp.32-34, May 1997.

指導教授

曾定章(Din-Chang Tseng)

審核日期

2006-6-24

推文