| 研究生: |
陳秋妤 Chen, Chiu-Yu |
|---|---|
| 論文名稱: |
用於影像置中深度封裝之新YCbCr格式設計 A New YCbCr Representation Design for Centralized Texture Depth Packing Formats |
| 指導教授: |
楊家輝
Yang, Jar-Ferr |
| 學位類別: |
碩士 Master |
| 系所名稱: |
電機資訊學院 - 電腦與通信工程研究所 Institute of Computer & Communication Engineering |
| 論文出版年: | 2016 |
| 畢業學年度: | 104 |
| 語文別: | 英文 |
| 論文頁數: | 76 |
| 中文關鍵詞: | 框兼容格式 、單視角單景深 、影像置中深度封裝 、深度內插 |
| 外文關鍵詞: | Frame compatible, 2D-plus-depth, CTDP formats, Depth interpolation |
| 相關次數: | 點閱:81 下載:5 |
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在過去幾十年來,人們對3D娛樂的需求日益增長,為了在現有的2D電視廣播系統中傳輸3D影像資訊,框兼容3D格式設計已被用來作為傳輸的媒介。於不同的框兼容3D格式中,使用彩圖與其對應的深度圖被視為對多視角3D電視的解決方案。然而,一般直接封裝的彩圖搭配對應景深格式在其縮放的過程中,在解封裝的彩圖及深度圖上皆會大量降低品質,進而降低其解封裝3D影像的品質。因此,影像置中深度封裝格式被提出來以提升解封裝後的影像品質。本論文乃基於原來的影像置中深度封裝(CTDP)格式系統,提出仿YCbCr轉換以及鄰近次像素深度重建等方法,前者主要利用梅花狀的交錯格式描述深度像素,而後者則根據未知景深之鄰近已知景深及圖像資訊,計算出最佳未知景深值。本篇論文中的實驗主要分為兩個部分,分別針對未壓縮與已壓縮的測試CTDP 3D影像做模擬實驗,不論是在未壓縮還是已壓縮的模擬實驗中,其實驗結果皆顯示修改過後的影像置中深度封裝格式系統與原來的系統相比,可以得到有更佳品質的重建深度圖以及合成虛擬圖。
In the past decades, the demand of the 3D entertainment grows intensively. To fit the existing 2DTV broadcasting channels, frame compatible 3D formats are utilized to deliver the 3D video information. Among these frame compatible 3D formats, those using texture and its corresponding depth map are considered as a good solution for multi-view 3DTV displays. Due to subsampling procedures, 2D-plus-depth packing formats bring seriously image degradation both in the depacked texture frame and depth map, which reduce the quality of the depacked 3D videos. Hence, to improve the quality of the depacked 3D video, the centralized texture and depth packing (CTDP) formats were proposed. In this thesis, the CTDP formats are further modified both with the emulated YCbCr transform and the adjacent sub-pixel depth rebuilding. The former utilizes the quincunx arrangement of the depth pixels. The latter is applied to interpolate the unknown depth pixel with its adjacent known texture and depth pixels to achieve the best interpolated unknown depth pixel. The simulations are conducted for uncoded and coded CTDP 3D video sequences and the results show the refined CTDP system gives better quality of the reconstructed depth as well as the synthesized view than the original CTDP system.
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