distortion rate function 中文意思是什麼

distortion rate function 解釋
失真率函數
  • distortion : n. 1. 歪扭，扭曲。2. 【電學】（信號、波形等的）失真；【物理學】（透鏡成像產生的）畸變；【醫學】扭轉，變形。3. 竄改，歪曲，曲解。adj. -al
  • rate : n 1 比率，率；速度，進度；程度；（鐘的快慢）差率。2 價格；行市，行情；估價，評價；費，費用，運費...
  • function : n 1 功能，官能，機能，作用。2 〈常 pl 〉職務，職責。3 慶祝儀式；（盛大的）集會，宴會。4 【數學】...
  1. The rate - distortion function, and source coding theorem

    率失真函數和信源編碼定理。
  2. By comparing the image - preprocessing results of different processing algorithms, an optimized algorithm was decided to ensure satisfying correlation snr and preprocessing rate to be obtained. synthetic discriminant function ( sdf ) filters of the 3 - d targets were designed and the reference filter libs ( rfl ) were constructed to provide high correlation snr. real - time distortion - invariant optical correlation was realized by temporal - spatial multiplexing technique

    為了保證opr系統有高的相關信噪比（ snr ）及良好的實時性能，本文對不同圖像預處理演算法的處理性能及效果進行了比較分析，為opr系統選取恰當的圖像預處理演算法提供了依據；將時間多重化技術與空間多重化技術相結合，設計製作了三維目標的可實時刷新的sdf參考濾波器庫，為opr系統提供了高snr的相關輸出，從而實現了opr系統對目標的實時畸變不變光學相關；將人工神經網路（ ann技術）用於相關信號后處理，有效提高了opr系統的識別效率。
  3. To support smooth quality reconstruction under multiple rate constraints of transmission, it ’ s important to obtain the actual rate - distortion ( r - d ) function or distortion - rate function of each enhancement layer ( el ) frame

    為了能夠在不同的傳輸碼率下平滑重建fgs目標視頻流，基於幀的fgs增強層率失真函數的獲取是一個非常關鍵的問題。
  4. So if we gain the relation between the the derivative of ggd distortion - rate function and the ggd shape parameter, then we can reconstruct the rate - distortion function. the bitplane - based fgs of mpeg - 4 has been accepted as a standard coding tool for video streaming applications

    這樣，實際中只需研究特定編碼量化模式下ggd失真速率函數的導數與ggd形狀參數的關系和規律，就可以重建相應編碼模式下的失真速率函數。
  5. In this thesis, firstly, we introduce generalized gaussian distributions to model the distributions of dct coefficients of an el frame. then, according to quantization theory, we analyze the distortion - rate function of the generalized gaussian model, with which we conclude that for the actual fgs coding, the derivative of actual distortion - rate function usually decreases continuously as the rate increases, and then begins to increase slowly at a comparatively high bit rate. finally, guided by the

    然後分析了fgs編碼的量化模式，並把它應用到ggd分佈上，得到了ggd分佈率失真函數的變化規律，從而獲得實際fgs編碼的率失真函數的變化規律，即fgs編碼失真速率函數的導數先隨著碼率的增加而逐漸減小，然後在碼率比較高的時候開始隨碼率的增加而緩慢地增加。
  6. The main contributions of this thesis are as follows : generalized gaussian distribution ( ggd ) is a nice model for the dct coefficients and wavelet coefficients in theory and practice. with information and quantization theory, we mathematically prove that the derivative of ggd distortion - rate function exists and is not related to the variance of the distribution

    本文通過信息論和量化理論的知識，分析了廣義高斯分佈ggd率失真函數的基本屬性，數學上嚴格證明了:以峰值信噪比psnr （ peaksignalnoiseratio ）或信噪比snr為失真標準，廣義高斯分佈ggd的失真速率函數（ distortion - ratefunction ）的導數存在，並且與分佈的方差無關。
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