multiple compression 中文意思是什麼

multiple compression 解釋
倍數壓縮
  • multiple : adj 1 多重的；復合的 復式的 多數的 多樣的。2 倍數的 倍。3 【電學】並聯的；多路的 復接的。4 【植物...
  • compression : n. 1. 壓縮；壓緊；濃縮，緊縮。2. 加壓；壓抑。3. （表現的）簡練。4. 應壓試驗。
  1. Vulcanized rubber0test method of multiple compression

    硫化橡膠多次壓縮試驗方法
  2. One is to use fourier transformation to convert the source signal from time domain to frequency domain and to discard high frequency harmonious components upwards of 19 ( gb / t14953 - 93 d5. 3 demanding ), then to have static huffman coding to the quantized char array which is composed of reserved direct current component and basic wave and each high frequency " s amplitudes and angles. the other is to use discrete wavelet transformation to convert the source signal from time domain to frequency domain and to set the high frequency coefficients that its absolute value is smaller than the given threshold to zero, then to have dynamic huffman coding to the quantized char array which is composed of multiple, wavelet ' s level, datum length, low frequency coefficients and reserved high frequency coefficients. mass simulinks and analyses under the two circumstances have done to show that data compression ratio is small and the relative error is also small and within the permission of engineering and the compression problem can be solved in theory of measured datum of power system

    第一種情況的壓縮方法為：採用傳統的傅立葉變換把原始信號從時間域變換到頻率域，舍棄20次及其以上的高次諧波成分（保證了gb / t14953 ? 93d5 . 3要求） ，然後對保留的直流分量、基波和各次諧波的幅值和相角數據量化后和量化時分別乘以的倍數系數構成一個數組，以字元形式保存，採用靜態huffman編碼對變換數據進行壓縮；採用離散小波變換把原始信號從時間域變換到頻率域，然後對分解得到的高頻系數進行閾值量化處理，對乘以的倍數系數、小波變換的階數、小波變換后的低頻、各級高頻以及原始數據長度、量化后的低頻系數以及保留的高頻系數大小、位置構成一個數組，以字元形式保存，採用動態huffman編碼對這個文件進行壓縮。
  3. In order to get high quality voice in spite of low - bandwidth, our system uses several kinds of voice compression algorithms, and it realizes the functions of voice activation and jitter compensation. on the other hand, we use some methods to make voice communication safe. the methods includes : filling traffic, encrypting voice datagram with conventional encryption algorithms ; encrypting session key with asymmetric encryption, multiple authentication

    為了保證通信鏈路不被分析，系統實現了一個通信量填充器；為了對傳輸中的語音數據包進行加密，系統提供了des 、 idea 、 blowfish和keyfile等各種常規加密方法；為了利用對稱加密的快速性和公開密鑰加密的方便性，系統只對會話密鑰進行公開密鑰加密。
  4. The paper analysis the image compression standard of jpeg2000 for the generality, describe the roi coding of jpeg2000, in the same time, the author briefly introduce wavelet theory which is the basis of the discrete wavelet algorithm adopted by jpeg2000, analysis the algorithm of roi based on discrete wavelet transform. finally the author carry on the detailed analysis to ebcot algorithm and to the multiple rois method, analysis every block of encoding, proposes one coding algorithm of roi based on ebcot and proposes one method can realize image multiple roi and multiple quality compression

    本文從一般性出發分析了jpeg2000標準，對jpeg2000的roi編碼進行了描述，同時對jpeg2000採用的離散小波變換演算法的理論基礎進行了介紹，分析了基於小波變換的圖像感興趣區域編碼方法。最後特別對jpeg2000標準的ebcot演算法和多興趣區域編碼方法進行了詳細的研究，對編碼的各個環節進行了分析，提出了基於ebcot的感興趣區域編碼演算法及實現多興趣區域多質量的壓縮的編碼方法。
  5. 1993, 39 : 821 - 834. 2 vaishampayan v, john s. interframe balanced multiple descriptionvideo compression. in

    正是在這種情況下，多描述編碼multiple description coding引起人們的重視。
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