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    政大機構典藏 > 資訊學院 > 資訊科學系 > 學位論文 >  Item 140.119/38546
    Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/38546


    Title: 從多視角已校正影像改善三維粗略模型
    Refinement of 3D rough models from calibrated multi-view images
    Authors: 吳坤信
    Contributors: 何瑁鎧
    吳坤信
    Keywords: 極線轉換
    多視角
    Date: 2008
    Issue Date: 2010-04-09 13:27:47 (UTC+8)
    Abstract: 由多視角已校正相片重建出的三維空間模型精確度不佳,近年來甚多學者專家致力於提升改善建模的精確度。在本論文中,我們提出了新的方法,透過多視角相片結合極線轉換可以改善對應點的準確度,並且有效的排除光源的影響,以提升模型整體的精確度。

    我們首先利用多視角已校正影像建立粗略3D模型,並轉出模型初始三維點座標。接著將三維座標點投影回可視相片,並使用色彩分布值和多視角極線轉換去改善可視相片中的對應點。

    其次利用多視角幾何創造出更多資訊,來能幫助提升對應點的正確性。接著調整法向量角度,使自動化的貼圖更精確。最後結合貼圖使3D模型更加逼真。
     
    在我們的實驗顯示發現對應點經過改善後較未改善前對應點的正確性高出約10%,3D模型的細節也更符合實際物體的形狀。敷貼上多視角拍攝的相片後3D模型也更加逼真。
    Reference: [1].Baumgart, B.G., “A polyhedron representation for computer vision“, In AFIPS Nation Computer Conference, 1975.
    [2].Derpanis, K.G., “The Harris Corner Detector”, In CVPR 2003.
    [3].Franco, J.S. and E. Boyer, “Exact Polyhedral Visual Hulls” ,In BMVC 03, Vol. I, pp. 329-338, September 2003.
    [4].Furukawa, Y and J. Ponce, “Accurate, Dense, and Robust Multi-View Stereopsis”, IEEE Conference on Computer Vision and Pattern Recongition, pp.1-8, 2007.
    [5].Furukawa, Y and J. Ponce, “Accurat Camera Calibration from Multi-View Stereo and Bundle Adjustment”, IEEE Conference on Computer Vision and Pattern Recongition, pp.1-8, 2008.
    [6].Hwang, Y., J. Kim, and I. Kweon, “Silhouette extraction for visual hull reconstruction“, MVA2005 IAPR Conference on Machine Vision Applications, pp. 39-42, May 16-18 2005.
    [7].Laurentini, A., “How Far 3D Shapes Can Be Understood from 2D Silhouettes”, IEEE Transactions on pattern analysis and machine intelligence, Volume 17, Number 2, pp.188-195, Feb 1995.
    [8].Laurentini, A., “The visual hull concept for silhouette based image understanding”, PAMI, 16(2):150–162, February 1994.(8)
    [9].Matusik, W., C. Buehler, R. Raskar, S.J. Gortler, and L. McMillan, “Image-Based Visual Hulls”, In SIGGRAPH 2000.
    [10].Milne, P, F. Nicolls, and G.. Jager, “Visual hull surface Estimation”, PRASA2004, pp. 13-18, Grabouw, Cape Town, 2004.
    [11].Jui-Yang Tsai, “Generation of Dense Image Matching Using Epipolar Geometry”, International Display Manufacturing Conference & 3D Systems and Applications, 2009.
    [12].Jui-Yang Tsai, “Generation of Dense Image Matching Using Epipolar Geometry”, 3D systems and Applications, 2009.
    [13].Kun-Shin Wu, “Refinement of 3D Models Reconstructed from Visual Hull”, Conference on Computer Vision, Graphics and Image Processing, 2009
    [14].Kun-Shin Wu, “Refinement of 3D Models Reconstructed from Visual Hull”, 3D systems and Applications , 2009
    [15].Yebin Liu, Xun Cao, Qionghai Dai and Wenli Xu, “Continuous Depth Estimation for Multi-view Stereo“, IEEE international Conference on Computer Vision and Pattern Recognition, 2009.
    [16].丁彥弘,從未校正影像序列做三維建築物重建,碩士論文,華梵大學資管系,西元2005年。
    [17].http://en.wikipedia.org/wiki/Visual_hull
    [18].http://www.vision.caltech.edu/bouguetj/calib_doc/
    Description: 碩士
    國立政治大學
    資訊科學學系
    96753031
    97
    Source URI: http://thesis.lib.nccu.edu.tw/record/#G0096753031
    Data Type: thesis
    Appears in Collections:[資訊科學系] 學位論文

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