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Author: 沈佑軒
Yu-hsuan Shen
Thesis Title: 針對非對稱性立體視覺影像之高效能升頻取樣方法
Efficient Up-Sampling Method for Asymmetric Stereoscopic Video Coding
Advisor: 鍾國亮
Kuo-liang Chung
鄧惟中
Wei-chung Teng
Committee: 范國清
Kuo-chin Fan
陳宏銘
Homer-H. Chen
顏嗣鈞
Hsu-chun Yen
Degree: 碩士
Master
Department: 電資學院 - 資訊工程系
Department of Computer Science and Information Engineering
Thesis Publication Year: 2012
Graduation Academic Year: 100
Language: 英文
Pages: 42
Keywords (in Chinese): 非對稱性立體視覺視訊編碼內插3D 電視升頻取樣韋納濾波器
Keywords (in other languages): Asymmetric stereoscopic video coding, interpolation, three-dimensional television (3DTV), up-sampling, and Wiener filter
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  • 在3D 電視中,考慮到編碼的時間以及3D 視訊有著較大位元率,傳輸時會受到頻寬的限制,因此,非對稱性立體視覺視訊被提出,即將每一張右視角影像的解析度降低為左視角的四分之一。本篇論文提出一種具有良好效果的升頻取樣策略,使得被縮小的右影像解析度能夠提升至與左影像相同。首先,利用韋納濾波器將右影像中的像素值填滿,再透過左右影像間的預測以及錯誤補償方法,改善右影像解析度提升後的品質。我們使用五組非對稱性立體視覺影像進行測試,實驗結果說明我們所提出的方法與目前的升頻取樣策略相比,在影像品質上有著較佳的效果。


    In three-dimensional television (3DTV), to reduce the encoding time and the bitrate required for transmitting 3D video sequences over bandwidth-limited channels, each right-view frame of a stereoscopic sequence is of quarter size of the leftview frame. In this thesis, we propose an efficient up-sampling method for scaling up the right-view frame such that the resized right-view frame and the left-view frame are both the same. The proposed method first interpolates missing pixels in the right-view frame by using the Wiener filter. Then an inter-view prediction scheme and an error compensation scheme are presented to improve the quality of up-sampled right view frame. Experimental results on a set of stereoscopic sequences demonstrate the superiority of the proposed up-sampling method in terms of quality when compared to state-of-the-art up-sampling methods.

    中文摘要. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i 英文摘要. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii 誌謝. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii 目錄. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv 表目錄. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v 圖目錄. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 Up-sampling process in H.264/AVC for ASVC . . . . . . . . . . . . . . . 3 3 Inter-view prediction scheme for wiener filter-based interpolation . . . . 8 4 Error compensation scheme for improving quality of up-sampled right view frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5 Experimental Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 參考文獻. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

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