簡易檢索 / 詳目顯示

研究生: 林京燁
Lin, Jing-Ye
論文名稱: 使用全方位攝影機於多重參數背景與前景模組之移動物體偵測
Motion Object Detection Using Multiple Parametric Background and Foreground Models at Omni-Directional Camera
指導教授: 連震杰
Lien, Jenn-Jier James
學位類別: 碩士
Master
系所名稱: 電機資訊學院 - 資訊工程學系
Department of Computer Science and Information Engineering
論文出版年: 2010
畢業學年度: 98
語文別: 中文
論文頁數: 59
中文關鍵詞: 移動物體偵測全方位攝影機
外文關鍵詞: Motion Object Detection, Omni-directional Camera
相關次數: 點閱:92下載:3
分享至:
查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報
  • 在本論文中,開發出一個使用在固定全方位攝影機上的移動物體偵測系統,對環境進行全方位的監視,將移動的物體偵測出來,以克服攝影機死角的問題。系統會先對全方位攝影機進行校正動作,將正確的中心點找出。這裡使用了 Canny 邊緣偵測 (Canny Edge Detector) 與霍氏轉換 (Hough Transform)來找出正確的中心點出來。再來將輸入的全方位影像攤平為全景影像,使用全景影像來做移動物體偵測。
    系統中提出了多重參數背景與前景模型之移動物體偵測,此方法使用了多重參數式背景模組來處理背景中週期性運動的物體,針對了前景也加入了多重參數式前景模組作為前景模型,來改善偵測前景時雜訊的問題。在實驗結果中,展示出本系統在不同環境下,可以對全方位攝影機拍攝到的畫面進行處理及移動物體偵測。

    In this thesis, we present a motion object detection system on omni-directional camera. The system increases the fields of view in order to overcome the blind spot problem in surveillance system. First, we need to do omni-directional camera calibration to find the omni-directional image center; the Canny Edge Detector and the Hough Transform are used for this purpose. Next, we unwarp the omni-directional image to the panoramic image which is used for motion object detection. We propose the motion object detection using multiple parametric background and foreground models. This method can handle backgrounds with periodic motion and thus reduce the influence of noise. Finally, the experimental results show that the system can perform in different situations.

    摘要 IV Abstract V 目錄 VII 圖目錄 IX 表目錄 XI 第一章 緒論 1 1.1 研究動機與背景 1 1.2 全方位攝影機簡介 3 1.3 相關研究 6 1.4 系統架構 8 1.5 論文架構 10 第二章 全方位攝影機 12 2.1 全方位攝影機模型 12 2.2 全方位攝影機校正 18 2.2.1 影像收集,及影像中相對應的特徵點找出 22 2.2.2 攝影機外部參數估計 23 2.2.3 攝影機內部參數及剩餘外部參數估計 25 2.2.4 使用線性的精煉法,估計內部及外部參數 26 2.2.5 找出全方位影像的中心點: Oc 27 2.2.6 使用非線性的精煉法,估計內部及外部參數 29 2.3 全方位影像攤平 30 第三章 多重參數背景與前景模組之移動物體偵測 32 3.1 多重參數式背景模型建立 33 3.2 前景偵測使用多重參數式背景及前景模型 37 3.3 多重參數式背景及前景模型更新 39 3.4 形態學處理及連通物件標記法 41 第四章 實驗結果 42 4.1 實驗環境及設備 42 4.2 全方位攝影機校正的結果 43 4.3 全景影像 44 4.4 移動物體偵測的結果及比較 49 4.5 系統整合 52 第五章 結論 55 Reference 56

    [1]S. Apewokin, B. Valentine, D. Forsthoefel, L., Wills, S. Wills, and A. Gentile, "Embedded Real-Time Surveillance Using Multimodal Mean Background Modeling," Embedded Computer Vision, pp. 163-175, 2008.
    [2]S. Baker and S. K Nayar, "A Theory of Catadioptric Image Formation," Proceedings of the International Conference on Computer Vision, pages 35-42, 1998.
    [3]S. Baker and S. K. Nayar, "A Theory of Single-Viewpoint Catadioptric Image Formation," International Journal of Computer Vision, Vol. 35, No. 2, pp. 175-196, November 1999.
    [4]J. Barreto and H. Araujo, "Geometric Properties of Central Catadioptric Line Images and their Application in Calibration," IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 27, No. 8, pp. 1327-1333, 2005.
    [5]J. Barron, D. Fleet, and S. Beauchemin, "Performance of Optical Flow Techniques," International Journal of Computer Vision, Vol. 12, No. 1, pp. 43–77, 1994.
    [6]J. S. Chahl and M. V. Srinivasan, "Reflective Surfaces for Panoramic Imaging," Applied Optics, Vol. 36, pp. 8275-8285, 1997.
    [7]R. Cucchiara, C. Grana, M. Piccardi, and A. Prati, "Detecting Moving Objects, Ghosts, and Shadows in Video Streams," IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 25, No. 10, pp. 1337-1342, 2003.
    [8]A. Elgammal, D. Harwood, and L. S. Davis, "Non-parametric Model for Background Subtraction," Proceedings of the European Conference on Computer Vision, pp.751-767, 2000.
    [9]C. Geyer and K. Daniilidis, "Catadioptric Projective Geometry," International Journal of Computer Vision, Vol. 45, No. 3, pp. 223-243, 2001.
    [10]C. Geyer and K. Daniilidis, "Paracatadioptric Camera Calibration," IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 24, No. 5, pp. 687-695, 2002.
    [11]I. Haritaoglu, D. Harwood, and L. S. Davis, "W4: Real-Time Surveillance of People and Their Activities," IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 22, No. 8, pp. 809-830, 2000.
    [12]R. Hartley and A. Zisserman, Multiple View Geometry in Computer Vision. Cambridge Univ. Press, Cambridge, 2000.
    [13]J. Kato, T. Watanabe, S. Joga, J. Rittscher, and A. Blake, "An HMM-Based Segmentation Method for Traffic Monitoring Movies," IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 24, No. 9, pp. 1291-1296, 2002.
    [14]K. Kim, T.H. Chalidabhongse, D. Harwood, and L. S. Davis, "Real-time Foreground-background Segmentation using Codebook Model," Real-Time Imaging, Vol. 11, No. 3, pp. 172-185, 2005.
    [15]D. Lambrinos, R. Möller, T. Labhart, R. Pfeifer, and R. Wehner, "A Mobile Robot Employing Insect Strategies for Navigation," Robotics and Autonomous Systems, Vol.30, pp. 39–64, 2000.
    [16]B.P.L. Lo and S.A. Velastin, "Automatic Congestion Detection System for Underground Platforms," Proceedings of International Symposium on Intelligent Multimedia, Video, and Speech Processing, pp. 158-161, 2001.
    [17]B. Micusik and T. Pajdla, "Estimation of Omnidirectional Camera Model from Epipolar Geometry," Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, Vol. 1, pp. 485-490, 2003.
    [18]B. Micusik and T. Pajdla, "Para-Catadioptric Camera Autocalibration from Epipolar Geometry," Proceedings of Asian Conference on Computer Vision, Vol. 2, pp. 748–753, 2004.
    [19]B. Micusik and T. Pajdla, "Structure from Motion with Wide Circular Field of View Cameras," IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 28, No. 7, pp. 1135-1149, 2006.
    [20]A. Mittal and N. Paragios, "Motion-Based Background Subtraction Using Adaptive Kernel Density Estimation," Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, pp. 302-309, 2004.
    [21]V. Morellas, I. Pavlidis, and P. Tsiamyrtzis, "Deter: Detection of Events for Threat Evaluation and Recognition," Machine Vision Application, Vol. 15, No. 1, pp. 29-45, 2003.
    [22]S. K. Nayar, "Catadioptric Omnidirectional Camera," Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, pp. 482-488, 1997.
    [23]M. Piccardi, "Background Subtraction Techniques: A Review," Proceedings of the IEEE International Conference on Systems, Man and Cybernetics, Vol. 4, pp. 3099-3104, 2004.
    [24]R. J. Radke, S. Andra, O. Al-Kofahi, and B. Roysam, "Image Change Detection Algorithms: A Systematic Survey," IEEE Transactions on Image Processing, Vol. 14, No. 3, pp. 294-307, 2005.
    [25]C. Ridder, O. Munkelt, and H. Kirchner, "Adaptive Background Estimation and Foreground Detection using Kalman-Filtering," Proceedings of International Conference on Recent Advances in Mechatronics, pp. 193–199, 1995.
    [26]D. Scaramuzza, A. Martinelli, and R. Siegwart, "A Toolbox for Easily Calibrating Omnidirectional Cameras," Proceedings of the IEEE International Conference on Intelligent Robots and Systems, Beijing China, pp. 5695–5701, 2006.
    [27]D. Scaramuzza, A. Martinelli, and R. Siegwart, "A Flexible Technique for Accurate Omnidirectional Camera Calibration and Structure from Motion," Proceedings of the IEEE International Conference on Computer Vision Systems, pp. 45, 2006.
    [28]C. Stauffer and W.E.L. Grimson, "Adaptive Background Mixture Models for Real-Time Tracking," Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, Vol. 2, pp. 246-252, 1999.
    [29]T. Svoboda and T.Pajdla, "Epipolar Geometry for Central Catadioptric Cameras," International Journal of Computer Vision, Vol. 49, No. 1, pp. 23-37, 2002.
    [30]K. Toyama, J. Krumm, B. Brumitt, and B. Meyers, "Wallflower: Principles and Practice of Background Maintenance," Proceedings of the IEEE International Conference on Computer Vision, Vol. 1, pp. 255-261, 1999.
    [31]C. Wren, A. Azarbayejani, T. Darrell, and A. Pentland, "Pfinder: Real-Time Tracking of the Human Body," IEEE Transactions on Pattern Analysis and Machine Intelligence,, Vol. 19, No. 7, pp. 780-785, 1997.
    [32]X. Ying and Z. Hu, "Catadioptric Camera Calibration Using Geometric Invariants," IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 26, No. 10, pp. 1260-1271, 2004.
    [33]Z. Zhang, "A Flexible New Technique for Camera Calibration," IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 22, No. 11, pp. 1330-1334, 2000.
    [34]J. Zhong and S. Sclaroff, "Segmenting Foreground Objects from a Dynamic Textured Background via a Robust Kalman Filter," Proceedings of the IEEE International Conference on Computer Vision, Vol.2, pp. 44-50, 2003.

    下載圖示 校內:2020-12-31公開
    校外:2020-12-31公開
    QR CODE