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題名 | 以內部預測方法對DWT次頻帶的係數提高編碼壓縮比=An Intra-Prediction Method for Improving the Coding Efficiency of DWT Subband Coefficients |
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作者 | 陳信豪; 吳國瑞; Chen, Hsin-hao; Wu, Guo-zua; |
期刊 | 光學工程 |
出版日期 | 20041200 |
卷期 | 88 2004.12[民93.12] |
頁次 | 頁40-47 |
分類號 | 312.1 |
語文 | chi |
關鍵詞 | 無線通訊; 視訊壓縮技術; 視訊編碼技術; 可調視訊編碼; |
中文摘要 | 在無線通訊傳輸越來越普遍的時代,以無線通訊來傳輸視訊似乎是愈形重要,然而許多使用者共爭有限的傳輸頻寬將會使得視訊傳輸品質隨時改變,故此需要新的視訊壓縮技術如可調性視訊編碼技術等來解決這樣的問題。本文提出一個對於可調視訊編碼架構的編碼效能改善方法,此方法將有助於變善可調性視訊編碼器在低位元率的編碼效能。 |
英文摘要 | Thanks to the progress in wireless communication technology, the transmission of multimedia data through the wireless communication channel is becoming more and more important. However, the transmission quality of video data could change dramatically within a short time when many users access the communication channel simultaneously. From the adaptation point of view, there should be a video coding scheme like the Scalable Video Coding encoder, which is being capable of delivering vide streams to users adaptively according to the available bandwidth at each time. In this article we present a sub-band based intra-coding technique to exploit the spatial redundancies within the energy-intensive low-pass temporal frame in a GOP. |
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