請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/18257
完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 蔡睿哲 | |
dc.contributor.author | Cheng-Hung Shiu | en |
dc.contributor.author | 徐晟紘 | zh_TW |
dc.date.accessioned | 2021-06-08T00:56:51Z | - |
dc.date.copyright | 2015-03-02 | |
dc.date.issued | 2015 | |
dc.date.submitted | 2015-02-11 | |
dc.identifier.citation | [1] 吳毓江。1993年。墨子校注。第532頁。北京:中華書局。
[2] Burns, P. (1997). The history of the discovery of cinematography. [3] Algarotti, F. (2000). Saggio sopra la pittura, pp. 59–63. Archivio Guido Izzi. [4] Stokstad, Marilyn, David Cateforis and Stephen Addiss. Art History. Second ed., pp. 964–967. Upper Saddle River, New Jersey: Pearson Education [5] Adelson, E. H., & Wang, J. Y. A. (1992). Single lens stereo with a plenoptic camera. IEEE transactions on pattern analysis and machine intelligence, 14(2), 99-106. [6] Ng, R., Levoy, M., Brédif, M., Duval, G., Horowitz, M., & Hanrahan, P. (2005). Light field photography with a hand-held plenoptic camera. Stanford Tech Report CSTR 2005-02. [7] http://www.yuvaengineers.com/?p=518 [8] KILLINGER, D. (2014). Lidar (light detection and ranging). Laser Spectroscopy for Sensing: Fundamentals, Techniques and Applications, 292. [9] Kumar, AS Kiran, and A. Roy Chowdhury. 'Terrain mapping camera for Chandrayaan-1.' Journal of earth system science 114.6 (2005): 717-720. [10] Ray, S. F. (2002). Applied photographic optics (Vol. 3). Oxford: Focal Press. [11] http://www.dofmaster.com/dofjs.html [12] Goodman, J. (2008). Introduction to Fourier optics. [13] Schmidt, J. D. (2010, July). Numerical simulation of optical wave propagation with examples in MATLAB. Washington: SPIE. [14] Visser, T. D., Gbur, G., & Wolf, E. (2002). Effect of the state of coherence on the three-dimensional spectral intensity distribution near focus. Optics communications, 213(1), 13-19. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/18257 | - |
dc.description.abstract | 在本篇論文中,本研究提出一種可獲得深度資訊的光學成像系統,利用不同物 距的光源,在不同位置聚焦後,經過尺寸為微米等級的微小孔洞產生繞射的發散程 度將會有所差別,可藉由量測在感光元件上的光束寬來判斷。
此系統相對於其他可獲得深度資訊的光學成像系統的優點為不需額外發射微 波,移動載具和複雜的後端運算,並且在長物距下(公里等級),聚焦點相差微米 等級時仍能作用。模擬時以傅立列光學中的 Fresnel 繞射原理為基礎,搭配 Matlab 軟體來建構此系統的模擬模型來驗證次光學深度辨識系統。 在模擬中選擇了光源為單顆點光源,以及二維正方形非同調光源,相當於模擬 了光源為完全同調(coherent)與完全不同調(incoherent)的情形,取樣光波發散 資訊的孔洞則使用了幾何形狀為圓形和矩形的圓形針孔與單狹縫。 並且藉由改變模擬中各項元件的參數來預測繞射圖形變化,如調整單狹縫與 圓形針孔孔徑的大小,觀察面的距離,透鏡的焦比值(f-number)大小,觀察繞射 圖形變化的趨勢,以及分析以上參數的改變如何影響兩不同物距的光源,經過孔 洞繞射後在感光元件上的光束寬大小,提供建議如何設計實驗的相關光學元件。 | zh_TW |
dc.description.abstract | This thesis presents an innovative optical imaging system which can detect the depth information of objects in the same time. It utilizes the wave property of light that light from different object has different divergence after the focus and this difference can be measured by adding an aperture to diffract the light, which means analyzing the spot size on the charged-coupled device (CCD).
Advantages of this system compared to other depth-detecting optical imaging systems are no need to emit extra microwave, move vehicle, and conduct complex back end calculating. This system can work under the condition that objects are in long distance (kilometer scale). Numerical simulation is constructed in Matlab software and the central idea is based on the Fresnel diffraction theory. This thesis simulates light sources as point source and two dimensional incoherent square light, equally completely coherent and incoherent, aperture shape as single slit and circular pinhole. By adjusting the variables of optical elements in simulation, diffraction pattern can be predicted. Relation between diffraction pattern and diameter of circular pinhole and single slit, distance between CCD and aperture and f-number of lens are discussed. In the end, suggestions about how to design this system are proposed. | en |
dc.description.provenance | Made available in DSpace on 2021-06-08T00:56:51Z (GMT). No. of bitstreams: 1 ntu-104-R01941026-1.pdf: 4980018 bytes, checksum: 9334e95e71537b451f9b0a1277061c32 (MD5) Previous issue date: 2015 | en |
dc.description.tableofcontents | 口試委員會審定書 i
誌謝 ii 中文摘要 iii ABSTRACT iv 目錄 v 圖案列表 vii 表格列表 x Chapter 1 序論 1 1.1 前言 1 1.2 光學成像系統的距離辨識技術 1 1.2.1 近距離 (公尺等級) 深度辨識技術:光場攝影術 (Light Field Photography) 1 1.2.2 遠距離 (公里等級) 深度辨識技術─ 光達測量技術 (Light Detection and Ranging (LIDAR) ) 3 1.2.3 遠距離 (公里) 深度辨識技術─ 地形繪圖相機 (Terrian Mapping Camera) 4 1.3 研究動機 4 Chapter 2 光學模擬理論基礎 7 2.1 Fresnel Diffraction Integral 7 2.2 薄透鏡方程式 (Thin Lens Equation) 9 Chapter 3 系統設計架構與模擬 12 3.1 光學深度辨識系統設計架構 12 3.2 模擬方法 13 3.2.1 孔洞 (aperture) 函數 13 3.2.2 傅立列轉換後的座標關係 14 3.2.3 模擬的流程 16 Chapter 4 模擬討論 17 4.1 未加孔洞 (aperture) 前 17 4.1.1 光源為平行光 17 4.1.2 光源為點光源 20 4.2 單狹縫 (single slit) 22 4.2.1 單狹縫寬度變化的影響 24 4.2.2 觀察面距離變化的影響 30 4.2.3 狹縫擺放至不同距離的影響 33 4.2.4 透鏡焦比值 (f-number) 的影響 35 4.3 孔洞為圓形針孔 (circular pinhole) 37 4.3.1 改變圓形針孔的半徑 38 4.3.2 觀察面與圓形針孔間距的影響 39 4.4 二維平面模擬 41 4.4.1 建立二維物體光源 41 4.4.2 二維平面光源模擬結果 44 4.5 物距的推導 51 Chapter 5 結論與未來展望 53 5.1 孔徑函數與觀察面距離的影響 53 5.2 透鏡f-number的影響 53 5.3 光束寬的定義 54 5.4 物距的回推 54 5.5 光束寬差異 54 5.6 未來展望 55 5.6.2 二維非同調光源的模擬 55 5.6.3 孔洞擺至聚焦點前後 55 REFERENCE 60 | |
dc.language.iso | zh-TW | |
dc.title | 基於 Fresnel 繞射原理的深度資訊辨識技術 | zh_TW |
dc.title | Depth Detection Based on the Fresnel Diffraction Theory | en |
dc.type | Thesis | |
dc.date.schoolyear | 103-1 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 呂志偉,孫家偉 | |
dc.subject.keyword | Matlab,傅立列光學,Fresnel 繞射,光學深度檢測器, | zh_TW |
dc.subject.keyword | Matlab,Fourier Optics,Fresnel Diffraction,Optical Depth Detection, | en |
dc.relation.page | 60 | |
dc.rights.note | 未授權 | |
dc.date.accepted | 2015-02-11 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 光電工程學研究所 | zh_TW |
顯示於系所單位: | 光電工程學研究所 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-104-1.pdf 目前未授權公開取用 | 4.86 MB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。