現在位置首頁 > 博碩士論文 > 詳目
  • 同意授權
論文中文名稱:實驗影像量測之相機偏移修正與FPGA系統相機應用可行性 [以論文名稱查詢館藏系統]
論文英文名稱:Camera Offset Correction of Image-based Measurements and FPGA System Camera Feasibility [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:工程學院
系所名稱:土木與防災研究所
畢業學年度:101
出版年度:102
中文姓名:李長勳
英文姓名:Chang-Xun Li 李長勳
研究生學號:99428064
學位類別:碩士
語文別:中文
口試日期:2013-07-22
論文頁數:77
指導教授中文名:楊元森
口試委員中文名:吳俊霖;洪曉慧
中文關鍵詞:影像量測相機偏移三角定位
英文關鍵詞:image-based measurementcamera movementstereo triangulation
論文中文摘要:影像量測技術於近年來開始廣泛地被應用於地震工程結構實驗。影像量測過程中發生的相機微量偏移是一個難以避免的誤差來源。在實驗的過程中,相機應保持穩固不動以避免在三角定位時產生誤差。而可能讓相機晃動的原因有-戶外實驗的強風、三角架的不穩固,以及任何非預期的人為碰觸。在長達數小時的量測中,即使是相當微量的相機偏移都將導致後續影像分析的嚴重誤差。
本研究在實驗進行時在地面上貼設數個不動點,做為相機偏移及相片校正的依據。本文利用第一張照片的不動點影像座標做為初始依據,計算後續照片的移動量及旋轉量。接著對於偏移後照片進行重新取樣,產生修正後的照片,以利進行後續的影像分析。本研究以國家地震工程研究中心執行的單柱搖擺實驗,驗證相機偏移之誤差修正的實用性。本文將探討雙相機量測系統與FPGA (Field-Programmable Gate Array)系統整合的可行性評估。
論文英文摘要:Image-based measurement is getting widely used in earthquake engineering structural experiments. Slight camera movement during an experiment is sometimes an inevitable source of measurement errors, which may result in considerable error of stereo triangulation. Camera movement is typically induced by slight tripod deformation, unexpected touching of imaging equipment, outdoor wind, and other factors.
This work developed an adjustment method to minimize the error induced by camera movement. This method requires several fixed reference points to be captured in the images. This method estimates the translational and rotational movement of images based on the translational movement of the fixed reference points in the images. Adjusted images are then generated based on estimated movement, and are used for follow-up image analysis process. An RC-rocking experiment conducted at National Center for Research on Earthquake Engineering was used to test the adjustment method. Finally, the feasibility of integrating stereo triangulation image-based analysis and Field-Programmable Gate Array (FPGA) system is discussed in this work.
論文目次:摘 要 i
ABSTRACT ii
誌 謝 iii
目錄 iv
表目錄 vi
圖目錄 vii
第一章 緒論 1
1.1 研究背景 1
1.2 研究目的 1
1.3 本文架構 3
第二章 研究方法 4
2.1 修正方法 4
2.2 相機偏移之模擬實驗 5
2.2.1 實驗器材與實驗流程 5
2.2.2 實驗分析結果 8
第三章 單柱搖擺實驗 9
3.1 實驗介紹 9
3.2 影像量測配置 11
3.2.1 設定控制點 11
3.2.2 相機配置 15
第四章 分析結果 20
4.1 不動點分析 20
4.2 三角定位分析 32
4.3 基礎位移與旋轉量分析 43
4.3.1 基礎位移與旋轉量分析結果 43
4.3.2 影像量測數據之西面與南面比較 56
4.4 影像量測與量測儀器數據比較 61
4.4.1 數據同步 61
4.4.2 數據比較 63
第五章 FPGA系統相機應用之可行性 72
5.1 FPGA簡介 72
5.2 FPGA系統之可行性 73
第六章 結論與建議 75
參考文獻 76
論文參考文獻:[1] Y. S. Yang, C. W. Huang, B. T. Chen and C. L. Wu "Image-based surface strain field measurement of a post-tensioned RC-wall cyclic test," Eleventh East Asia-Pacific Conference on Structural Engineering & Construction (EASEC-11), Taipei, Taiwan, November, 2008.
[2] Y. S. Yang, C. W. Huang and C. L. Wu, "A simple image-based strain measurement method for measuring the strain field in an RC-Wall experiment," Earthquake Engineering & Structural Dynamics, vol. 41, no. 1, pp. 1-17.
[3] Y. S. Yang, C. W. Huang and C. L. Wu, "Image-based Measurement Techniques for Earthquake Engineering," Proceedings of the 9^h Pacific Conference on Earthquake Engineering, Auckland, New Zealand, 2011, Paper No.159.
[4] J. C. Lagarias, J. A. Reeds, M. H. Wright and P. E. Wright, "Convergence Properties of the Nelder-Mead Simplex Method in Low Dimensions," SIAM Journal of Optimization, Vol. 9 No. 1, 1998, pp.112-147.
[5] J. A. Nelder and R. Mead., "A simplex method for function minimization.," Computer Journal, vol. 7, no. 4, 1965, pp.308-313.
[6] 洪曉慧、張國鎮、劉光晏、何姿慧,直接基礎之搖擺實驗與分析,NCREE-08-040,國家地震工程研究中心,台北,台灣,2008。
[7] 洪曉慧,個人討論,2012。
[8] 葉育綸,地震工程實驗影像量測之規劃與分析-以牛鬥橋、單柱搖擺及鋼浪腹板實驗為例,碩士論文,國立台北科技大學土木與防災所,台北,台灣,2011。
[9] 蔡瑞峰,雙相機系統於應變量測之應用,碩士論文,中原大學土木工程研究所,桃園,台灣,2011。
[10] J. Y. Bouguet, "Camera calibration toolbox for Matlab," Web address: http:// www.vision.caltech.edu/bouguetj/calib_doc/, Accessed: Aug. 15, 2013.
[11] Tom Feist, "Vivado Design Suite," Xilinx, Inc., Available at: http://www.xilinx. com/support/documentation/white_papers/wp416-Vivado-Design-Suite.pdf, Accessed: Aug. 15, 2013.
[12] National Instruments Corporation, "NI LabVIEW FPGA Module," Web address: http://www.ni.com/labview/fpga/zht/, Accessed: Aug. 15, 2013.
[13] S. Neuendorffer, T. Li and D. Wang, "Accelerating OpenCV Applications with Zynq using Vivado HLS Video Libraries," Xilinx, Inc., Available at: http:// www.xilinx.com/support/documentation/application_notes/xapp1167.pdf, Accessed: Aug. 15, 2013.
[14] Xilinx, Inc., "Xilinx Zynq-7000 All Programmable SoC ZC702 Evaluation Kit," Web address: http://www.xilinx.com/products/boards-and-kits/EK-Z7-ZC702- G.htm, Accessed: Aug. 15, 2013.
論文全文使用權限:同意授權於2013-08-26起公開