以多次隨機位移拍攝增加影像品質之研究

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陳明沅(MING-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

以多次隨機位移拍攝增加影像品質之研究
(Study on Image Quality Enhancement by Multiple Imaging with Random Displacements)

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至系統瀏覽論文 (2027-8-30以後開放)

摘要(中)

在當前科技迅速發展的背景下，數位相機的解析度仍然受限於感測器尺
寸和像素密度，導致在影像解析度方面面臨諸多挑戰。本論文的宗旨在深入
探討如何通過像素位移技術，突破這些傳統技術的侷限，實現數位相機影像
解析度的提升，我們通過模擬相機進行隨機位移來拍攝物體，得到多張低解
析度的照片後，合成一張高解析度的照片，透過一維和二維模擬結果，能夠
明顯看出提升影像解析度，最後將此結果與市面上常見的影像內插法進行
比較，展示像素位移技術在提升解析度方面的優勢，並證明此方法在影像解
析度方面有著顯著的提升。

摘要(英)

In the context of rapidly advancing technology, the resolution of digital
cameras remains constrained by sensor size and pixel density, leading to
numerous challenges in image resolution. This paper aims to explore how pixel
shift technology can overcome these traditional limitations and enhance the
resolution of digital camera images. By simulating random camera displacements
to capture an object, multiple low-resolution photos are obtained and then
synthesized into a high-resolution image. Through one-dimensional and two
dimensional simulation results, a significant improvement in image resolution can
be observed. Finally, the results are compared with common interpolation
methods available on the market, demonstrating the advantages of pixel shift
technology in enhancing resolution and proving its effectiveness in significantly
improving image resolution.

關鍵字(中)

★ 像素位移技術
★ 影像處理
★ 影像內插法

關鍵字(英)

★ pixel shift technology
★ image processing
★ image interpolation

論文目次

摘要 ..................................................................................................................... VI
Abstract .............................................................................................................. VII
致謝 .................................................................................................................. VIII
目錄 ..................................................................................................................... IX
圖目錄 ................................................................................................................ XII
表目錄 .............................................................................................................. XVI
第一章緒論 .................................................................................................. 1
1-1 引言 ..................................................................................................... 1
1-2 研究動機 ............................................................................................. 3
1-3 論文大綱 ............................................................................................. 4
第二章影像處理基本原理 .......................................................................... 5
2-1 相機感光元件種類 ............................................................................. 6
2-1-1 CCD影像感測器 .......................................................................... 7
2-1-2 CMOS影像感測器 ....................................................................... 7
2-1-3 CCD與CMOS之比較 ................................................................. 8
2-2 影像處理 ........................................................................................... 10
2-2-1歸一化處理 ................................................................................. 10
2-2-2白平衡校正 ................................................................................. 11
X

2-2-3去馬賽克化 ................................................................................. 12
2-3 灰階影像 ........................................................................................... 15
2-4 影像解析度 ....................................................................................... 17
2-5 捲積與反捲積 ................................................................................... 19
2-5-1 捲積............................................................................................. 19
2-5-2 反捲積 ........................................................................................ 20
第三章像素位移方法建立 ........................................................................ 21
3-1 市面上常見內插法 ........................................................................... 21
3-1-1最鄰近內插法 ............................................................................. 22
3-1-2雙線性內插法 ............................................................................. 24
3-1-3雙三次內插法 ............................................................................. 27
3-2 CMOS影像感測器取樣定理 ............................................................ 31
3-3像素特徵值提取 ................................................................................ 36
3-3-1傅立葉轉換 ................................................................................. 37
3-3-2特徵值提取 ................................................................................. 38
3-4像素位移法提升影像解析度 ............................................................ 39
第四章模擬結果與比較 ............................................................................ 41
4-1像素位移技術驗證 ............................................................................ 41
4-2 一維CMOS模擬架構建立 .............................................................. 49
XI

4-3 二維CMOS模擬架構建立 .............................................................. 56
4-4 影像解析度定義 ............................................................................... 65
4-5 內插法比較結果與分析 ................................................................... 66
第五章結論 ................................................................................................ 74
參考文獻 ............................................................................................................. 75
中英名詞對照表 ................................................................................................. 80

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指導教授

楊宗勳孫慶成(Tsung-Hsun,Yang)

審核日期

2025-3-4

推文