研究生: |
沈佑軒 Yu-hsuan Shen |
---|---|
論文名稱: |
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 |
指導教授: |
鍾國亮
Kuo-liang Chung 鄧惟中 Wei-chung Teng |
口試委員: |
范國清
Kuo-chin Fan 陳宏銘 Homer-H. Chen 顏嗣鈞 Hsu-chun Yen |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 資訊工程系 Department of Computer Science and Information Engineering |
論文出版年: | 2012 |
畢業學年度: | 100 |
語文別: | 英文 |
論文頁數: | 42 |
中文關鍵詞: | 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 |
外文關鍵詞: | Asymmetric stereoscopic video coding, interpolation, three-dimensional television (3DTV), up-sampling, and Wiener filter |
相關次數: | 點閱:197 下載:2 |
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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.
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