手機閃光燈之廣角補光燈之光學設計與影像處理

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姓名

陳柏源(Po-Yuan Chen) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

手機閃光燈之廣角補光燈之光學設計與影像處理
(Optical Design and Image Processing of Wide-Angle Fill Light for Mobile Phone Flash)

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至系統瀏覽論文 (2027-6-26以後開放)

摘要(中)

本研究旨在為 iPhone 12 的閃光燈設計一款廣角補光燈，以提升拍攝照片的照明品質。透過光學設計，補光燈可提供更寬廣且均勻的光線分布，有效解決閃光燈照明範圍不足的問題。此外，本研究提出了一種影像處理方法，利用已知的照度分布，在相同拍攝條件下，透過簡單的運算即可獲得亮度均勻的照片。實驗結果顯示加入本論文所設計之廣角補光燈後，照片的灰階變化、亮度均勻性、訊雜比等影像品質指標均優於單獨使用閃光燈的情況，驗證了補光燈設計的有效性。

摘要(英)

Despite the increasingly powerful camera functions of modern smartphones, their built-in flashes still have limitations in lighting performance. Firstly, the illumination range of smartphone flashes is limited, often failing to cover the needs of wide-angle photography, resulting in insufficient brightness at the edges of the frame. Secondly, due to the concentrated light source, objects illuminated by the flash are prone to overexposure in the center and darkening at the edges, affecting the overall luminance uniformity of the photo.
To address these issues, this study focuses on developing a wide-angle auxiliary flash for the iPhone 12. Through optical design, we aim to expand the illumination range and provide a more uniform light distribution, thereby enhancing the image quality of mobile photography in low-light environments. Additionally, we will explore how to further correct the uneven illumination caused by the flash through image processing techniques, aiming to achieve more desirable photography results.

關鍵字(中)

★ 手機閃光燈
★ 補光燈
★ 光學設計
★ 影像處理

關鍵字(英)

★ Mobile Flashlight
★ Fill Light
★ Optical Design
★ Image Processing

論文目次

摘要 V
ABSTRACT VI
致謝 VII
目錄 VIII
圖目錄 XI
表目錄 XVII
第一章緒論 1
1-1 前言 1
1-2 研究動機 3
1-3 論文大綱 4
第二章基礎原理 5
2-1 光度學 5
2-2 LED基本介紹 9
2-3 中場擬合法 12
2-4 幾何光學原理 14
2-4-1 折射定律 14
2-4-2 全內反射 15
2-4-3 反射定律 17
第三章補光燈設計及結果分析 18
3-1 光源量測及模型建立 18
3-2 折射式透鏡之二次光學設計 24
3-2-1 初步設計-De0402 25
3-2-2 最終設計-De0507 28
3-3 設計結果分析 31
3-4 補光燈模型製作與驗證 33
3-5 均勻度分析 40
第四章影像處理及分析 44
4-1 相機原始資訊 45
4-1-1 影像感光元件與拜爾陣列 46
4-1-2 歸一化處理 49
4-1-3 白平衡校正 50
4-1-4 去馬賽克化 51
4-1-5 結論 53
4-2 影像處理 54
4-3 影像品質分析 57
4-3-1 訊雜比 57
4-3-2 條紋圖形拍攝 58
4-3-3 戶外場景拍攝 63
第五章結論 70
參考文獻 72
中英文名詞對照表 75
附錄A 80

參考文獻

J. Poushter, S. Gubbala, S. Austin, “8 charts on technology use around the world,” https://www.pewresearch.org/short-reads/2024/02/05/8-charts-on-technology-use-around-the-world/.
2. F. Richter, “Digital Camera Sales Dropped 87% Since 2010,” https://www.statista.com/chart/5782/digital-camera-shipments/.
3. M. Broz, “How many pictures are there (2024): Statistics, trends, and forecasts,” https://photutorial.com/photos-statistics/#smartphones-vs-cameras.
4. BIPM, “SI Brochure: The International System of Units (SI),” https://www. bipm.org/en/publications/si-brochure.
5. H. J. Round, “A note on carborundum,” Electrical World 19, 309-310 (1907).
6. N. Holonyak, Jr. and S. F. Bevaqua, “Coherent(visible) Light Emission From Ga(As1–xPx) Junctions,” Appl. Phys. Lett. 1, 82-83 (1962).
7. S. Nakamura, T. Mukai, and M. Senoh, “Candela-class high-brightness InGaN/AlGaN double-heterostructure blue-light-emitting diodes,” Appl. Phys. Lett. 64, 1687-1689 (1994).
8. 孫慶成，光電科技概論，第二版(全華圖書公司，2014)。
9. C. C. Sun, T. X. Lee, S. H. Ma, Y. L. Lee, and S. M. Huang, “Precise optical modeling for LED lighting verified by cross correlation in the midfield region,” Opt. Lett. 31, 2193-2195 (2006).
10. W. T. Chien, C. C. Sun, and I. Moreno, “Precise optical model of multi-chip white LEDs,” Opt. Express 15, 7572–7577 (2007).
11. C. C. Sun, W. T. Chien, I. Moreno, C. C. Hsieh, and Y. C. Lo, “Analysis of the far field region of LEDs,” Opt. Express 17, 13918-13927 (2009).
12. E. Hecht, Optics, 4th eds. (Addison Wesley, San Francisco, 2002).
13. V. N. Mahajan, Optical Imaging and Aberrations: Part I Ray Geometrical Optics (SPIE PRESS, Washington, 1998).
14. V. N. Mahajan, Fundamentals of Geometrical Optics (Society of Photo Optical, 2014).
15. Nichia, LED/LD site, https://led-ld.nichia.co.jp/en/product/index.html.
16. Nichia, “NFSWE11A-V1 LED”, https://led-ld.nichia.co.jp/en/product/led_product_data.html?type=NFSWE11A-V1kbn=0.
17. 廖政凱，手機閃光燈之複合透鏡光學設計，國立中央大學光電所碩士論文，民國一百零八年。
18. 洪國展，手機閃光燈照明設計，國立交通大學影像與生醫光電研究所碩士論文，民國一百零一年。
19. Sypnosys, “LightTools optical simulation”, https//www.synopsys.com.com/optical-solutions.html.
20. Apple, “iPhone 12-Technical Specifications”, https://support.apple.com/zh-tw/111875.
21. 蕭力瑋，高動態範圍影像式照度即時檢測系統，國立中央大學光電所碩士論文，民國一百一十年。
22. D. Litwiller, “CCD vs. CMOS：Facts and Fiction,” Photonics spectra 35, 154-158 (2001).
23. B. E. Bayer, “Color imaging array,” United States Patent, US3971065A (1976).Li, Xin, Bahadir Gunturk, and Lei Zhang. "Image demosaicing: A systematic survey." Visual Communications and Image Processing. SPIE, 489-503 (2008).
24. E. J. Kirkland, and E. J. Kirkland, “Bilinear interpolation,” Advanced Computing in Electron Microscopy, 261-263 (2010).
25. K. T. Gribbon and D. G. Bailey, “A novel approach to real-time bilinear interpolation,” presented at DELTA 2004. Second IEEE International Workshop on Electronic Design, Test and Applications*, Perth, WA, Australia, Jan. 2004, pp. 28-30
26. A. M. Eskicioglu and P. S. Fisher, “Image quality measures and their performance,” IEEE Transactions on Communications 43, 2959-2965 (1995).
27. Y. Yi, X. Yu, L. Wang and Z. Yang, “Image Quality Assessment Based on Structural Distortion and Image Definition, ” presented at the 2008 International Conference on Computer Science and Software Engineering 2008.
28. Z. Wang and A. C. Bovik, “A universal image quality index, ” IEEE signal processing letters 9, 81-84 (2002).
29. K. H. Thung and P. Raveendran, “A survey of image quality measures, ” presented at the International Conference for Technical Postgraduates (TECHPOS), IEEE, 2009.
30. 林志豪、鄭仰傑, “亮度與對比之影像品質評估," 中華印刷科技年報, 105-114 (2008).
31. Box, George, “Signal-to-Noise Ratios, Performance Criteria, and Transformations.” Technometrics 30, 1–17 (1988).
32. OSRAM, “OSRAM OSLON® Black Flat, LUW HWQP”, https://ams-osram.com/products/leds/white-leds/osram-oslon-black-flat-luw-hwqp.

指導教授

孫慶成(Ching-Cherng Sun)

審核日期

2024-8-13

推文