本研究應用數位影像相關(Digital Image Correlation, DIC)法系統拍攝階高試件，經由分析軟體計算後得知DIC系統量測精度資訊，並針對造成系統量測誤差之因素進行探討。

本研究探討使用3D-DIC法於量測平面內位移時，因左右相機視角的不同而造成面內位移伴隨產生面外位移之現象，並建立理論模型修正面內位移的誤差。本研究亦探討不同對焦平面對修正模型的影響，以及使用修正模型於應用光場(Light Field, LF)相機於3D-DIC法的可能性。

本研究最後探討使用LF相機的DIC系統(LF-DIC)以及使用CCD相機的DIC系統(CCD-DIC)之間的差異，並使用修正模型修正3D-DIC法之量測結果，將LF-DIC與CCD-DIC的量測結果互相比對並討論不同對焦面對DIC法量測準確度的影響。本研究嘗試以LF相機取代現有商品化DIC系統使用之CCD相機，並整合本研究所提出的修正模型而成為創新的DIC系統，以提高DIC系統量測精度。

In this research, a Digital Image Correlation (DIC) method was used to capture the test specimens. Displacement was obtained by software calculation, and the factors that caused the displacement measurement error were discussed.

This research investigated the use of 3D-DIC method to measure the in-plane displacement, due to the difference of the left and right camera angles resulting in in-plane displacement associated with out-of-plane displacement, and to establish a theoretical model to correct in-plane displacement error. This research also discusses the influence of different focusing planes on the correction model, and the possibility of using a correction model to apply the Light Field (LF) camera to the 3D-DIC method.

In this research, the displacement measurement error between the DIC system using LF camera (LF-DIC) and the DIC system using CCD camera (CCD-DIC) was discussed. The correction model was used to modify the measurement results of the 3D-DIC method. The measurement results of LF-DIC and CCD-DIC are compared with each other and the influence of the DIC measurement accuracy of different focusing planes was discussed.

To improve the measurement accuracy of the DIC system, this research attempted to replace the CCD camera used in the commercial DIC system with an LF camera and integrated the correction model into an innovative DIC system, trying to establish a novel optical measurement system.

[1] 莊子弘, 利用調變轉換函數探討數位影像相關法之誤差, 國立清華大學動力機械工程學系碩士論文, 2012.
[2] 陳家禾, 數位影像相關法位移誤差與像差關係之探討, 國立清華大學動力機械工程學系碩士論文, 2013.
[3] 牙璽喬, 結合數位影像相關法與光場相機新型量測系統之研發, 國立清華大學動力機械工程學系碩士論文, 2015.
[4] W. H. Peters and W. F. Ranson, “Digital Imaging Techniques in Experimental Stress Analysis,” Optical Engineering, Vol. 21, No. 3, pp. 427-431, 1982.
[5] M. A. Sutton, W. J. Wolters, W. H. Peters, W. F. Ranson and S. R. McNeill, “Determination of Displacements Using an Improved Digital Image Correlation Method,” Image and Vision Computing, Vol. 1, No. 3, pp. 133-139, 1983.
[6] H. A. Bruck, S. R. McNeill, M. A. Sutton and W. H. Peters, “Digital Image Correlation Using Newton-Raphson Method of Partial Differential Correlation,” Experimental Mechanics, Vol. 29, No. 3, pp. 261-267, 1989.
[7] Z. L. Kahn-Jetter and T. C. Chu, “Three-dimensional Displacement Measurements Using Digital Image Correlation and Photogrammic Analysis,” Experimental Mechanics, Vol. 30, No. 1, pp. 10-16, 1990.
[8] P. F. Luo, Y. J. Chao, M. A. Sutton and W. H. Peters, “Accurate Measurement of Three-dimensional Deformations in Deformable and Rigid Bodies Using Computer Vision,” Experimental Mechanics, Vol. 33, No. 2, pp. 123-132, 1993.
[9] M. A. Sutton, J. J. Orteu and H. W. Schreier, “Image Correlation for Shape, Motion and Deformation Measurements Basic Concepts, Theory and Applications,” Springer, New York, U.S.A., 2009.
[10] H. Lu and P. D. Cary, “Deformation Measurements by Digital Image Correlation: Implementation of a Second-Order Displacement Gradient,” Experimental Mechanics, Vol. 40, No. 4, pp. 393-400, 2000.
[11] B. Pan, H. M. Xie, B. Q. Xu and F. L. Dai, “Performance of Sub-Pixel Registration Algorithms in Digital Image Correlation,” Measurement Science and Technology, Vol. 17, No. 6, pp. 1615-1621, 2006.
[12] L. Felipe-Sesé, P. Siegmann, F. A. Díaz and E. A. Patterson, “Simultaneous In-and-Out-of-Plane Displacement Measurements Using Fringe Projection and Digital Image Correlation,” Optics and Lasers in Engineering,Vol. 52, No. 1, pp. 66-74, 2014
[13] A. Gershun, “The Light Field,” Journal of Mathematics and Physics, Vol. 18, pp. 51-151, 1939.
[14] E. H. Adelson and J. R. Bergen, “The Plenoptic Function and the Elements of Early Vision,” Computational Models of Visual Processing, MIT Press, Cambridge, MA, U.S.A., pp. 3-20, 1991.
[15] E. H. Adelson and Y. A. Wang, “Single Lens Stereo with a Plenoptic Camera,” IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 14, No. 2, pp. 99-106, 1992.
[16] M. Levoy and P. Hanrahan, “Light Field Rendering,” SIGGRAPH '96 Proceedings of The 23rd Annual Conference on Computer Graphics and Interactive Techniques, New Orleans, LA, pp. 31-42, 1996.
[17] B. Wilburn1, N. Joshi, V. Vaish, Eino-Ville Talvala, E. Antunez, A. Barth, A. Adams, M. Horowitz and M. Levoy, “High Performance Imaging Using Large Camera Arrays,” Association for Computing Machinery Transactions on Graphics, Vol. 24, No. 3, pp. 765-776, 2005.
[18] R. Ng, M. Levoy, M. Brédif, G. Duval, M. Horowitz and P. Hanrahan, “Light Field Photography with a Hand-Held Plenoptic Camera,” Stanford Tech Report CTSR, No. 2, pp. 1-14, 2005.
[19] R. Ng and P. Hanrahan, “Digital Correction of Lens Aberrations in Light Field Photography,” International Optical Design Conference, SPIE, 63421E, Vol. 6342, pp. 63421E(1-14), 2007.
[20] M. Levoy, Z. Zhang, I. Mcdowall, “Recording and Controlling the 4D Light Field in a Microscope Using Microlens Arrays,” Journal of Microscopy, Vol. 235, No. 2, pp. 144-162, 2009.
[21] 張廷宇, 應用影像相關法探討人工網膜與動物筋膜之變形與機械性質, 國立清華大學動力機械工程學系碩士論文, 2008.
[22] 陳柏甫, 三維數位影像相關法之新校正程序, 國立清華大學動力機械工程學系碩士論文, 2010.
[23] 陳家禾, 數位影像相關法位移誤差與像差關係之探討, 國立清華大學動力機械工程學系碩士論文, 2013.
[24] W. H. Peters, W. F. Ranson, T. C. Chu and J. Anderson, “Application of Digital Correlation Methods to Rigid Body Mechanics,” Optical Engineering, Vol. 22, No .6, pp. 738-742, 1983.
[25] 潘家弘, 利用傅立葉切片理論之數位變焦計算與硬體加速設計, 國立臺灣大學電機資訊學院電子工程學研究所碩士論文, 2011.
[26] 周志良, 光學成像技術研究, 中國科學技術大學博士論文, 2012.
[27] R. Ng, “Fourier Slice Photography,” Association for Computing Machinery Transactions on Graphics, Vol. 24, No. 3, pp. 735-744, 2005.
[28] 聶云峰, 相里斌, 周志良, 光學成像技術進展, 中國科學院研究生院學報, Vol. 28, No. 5, pp. 563-572, 2011.
[29] 楊凡, 袁艷, 周志良, 光場相機成像質量評價方法研究, 現代電子技術, Vol. 34, No. 6, pp. 4-6, 2011.
[30] Website: http://www.schneiderkreuznach.com/index_e.htm
[31] Website: http://www.alliedvisiontec.com/
[32] Website: https://www.lytro.com/
[33] Website: http://www.correlatedsolutions.com.
[34] Website: http://www.surevision.com.tw/product.htm
[35] Website: http://www.onset.com.tw/
[36] Website: https://www.mitutoyo.com.tw/
[37] Website: http://www.techniquip.com/
[38] Website: http://www.advancedillumination.com/
[39] Website: https://en.wikipedia.org/wiki/Distortion_(optics)
[40] Website:http://www.vision.caltech.edu/bouguetj/calib_doc/htmls/e
xample.html