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題名 | Multiple Description Video Coding Based on 3-D Set Partitioning in Hierarchical Trees=以三維層級樹集合分派演算法為基礎的視訊多重描述編碼 |
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作者姓名(中文) | 黃金本; 黃博俊; 黃炳森; | 書刊名 | 中正嶺學報 |
卷期 | 41:2(A) 2012.11[民101.11] |
頁次 | 頁1-10 |
分類號 | 312.1 |
關鍵詞 | 視訊多重描述編碼; 多相位取樣; 層級樹集合分派演算法; 視訊編碼; 補零機制; MDVC; Poly-phase sampling; SPIHT; Video coding; Zero padding; |
語文 | 英文(English) |
中文摘要 | 本文提出一個以三維層級樹集合分派演算法為基礎的視訊多重描述編碼法。利用多相位取樣(Poly-phase Sampling)的技術,對輸入的視訊於時間或空間方向進行取樣,以獲得獨立且高關聯性的數個不同描述,接著以三維層級樹集合分派演算法對各個描述進行編碼,然後將編碼後的串流經無線網路由不同通道(Channel)傳輸出去,且於演算法使用補零機制,使效能可以更加提升。使用本方法可以降低傳輸所需的資料量,提高整體的傳送速度,更重要的是當通道壅塞或資料遺失時仍具有可接受的重建視訊品質。實驗結果證實,本文所提出的方法具有效性及高性能,而且非常適合於具調適性調變與編碼網路如WiMAX與LTE的相關應用。 |
英文摘要 | This paper presents a new method of multiple description video coding (MDVC) based on an algorithm of three-dimensional set partitioning in hierarchical trees (3-D SPIHT). Our approach employs a poly-phase sampling technique to sample an input video over spatial or time direction and generate several independent and highly correlated sub-videos (descriptions). Then a 3-D SPIHT algorithm is applied to each of the generated descriptions. Finally, the coding results are transmitted over a wireless network and via different channels. In addition, the zero padding mechanism is employed in our system to enhance the performance. As a result, the proposed scheme achieves high compression ratio, improves transmission speed, and more importantly, attains acceptable video quality when channel congestion occurs. Experimental results have demonstrated promising performance of the proposed method and feasible potential for Adaptive Modulation and Coding (AMC) based networks such as Worldwide Interoperability for Microwave Access (WiMAX) and Long Term Evolution (LTE) applications. |
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