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研究生:陳九如
研究生(外文):Chiu-Ju Chen
論文名稱:基於不均勻變形之影像拼接
論文名稱(外文):Image Stitching by Non-homogeneous warping
指導教授:莊永裕
指導教授(外文):Yung-Yu Chuang
口試委員:楊傳凱紀明德李明穗
口試日期:2011-07-11
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:資訊網路與多媒體研究所
學門:電算機學門
學類:網路學類
論文種類:學術論文
論文出版年:2011
畢業學年度:99
語文別:英文
論文頁數:36
中文關鍵詞:基於不均勻變形多透視角影像拼接
外文關鍵詞:Non-homogeneous warpingnon-rigid alignmentmulti-perspective image stitching
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本論文提出了一基於不均勻變形(non-homogeneous warping)之影像拼接(image stitching)演算法。本方法自動拼接多張取自不同視角之照片,且不需利用影像分層或混合技術即可合成一張具多透視點之全景圖。我們基於一以形變為基礎之影像比對演算法,藉由限制相對應之特徵點於同一位置求得初始形變,接著進行粗略至精細(coarse-to-fine)比對策略以改進拼接結果,最後反覆優化求得多透視點全景圖。

This thesis proposes an automatic approach to multi-perspective image stitching. Differently from previous stitching methods using global transformation such as homography, we frame non-homogeneous warping into Lucas-Kanade approach and optimize for multi-perspective images. Our algorithm consists of two stages: alignment stage and aggregation stage. The former uses non-rigid alignment after applying feature-based registration, the latter iteratively solves for multi-perspective results. Experiments on the numbers of images taken from different view-points showed that our algorithm improves the image stitching without using layering or blending techniques.

中文摘要 i
Abstract iii
1 Introduction 1
2 Related work 3
2.1 Image Registration 3
2.2 Multi-perspective Image Stitching 4
3 Method 7
3.1 Alignment Stage 8
3.1.1 Rigid Alignment 9
3.1.2 Non-rigid Alignment 10
3.2 Aggregation Stage 15
4 Results 27
5 Conclusions 33
Bibliography 35

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[13] L. Zelnik-Manor and P. Perona. Automating joiners. International symposium on non-photorealistic animation and rendering, 8(2), 2007.

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