transform operator 中文意思是什麼
transform operator
解釋
變換運算元-
The properties of the biorthogoanl multivariate matrix - valued wavelet packets are investigated and biorthogonality formulae are obtained by using the fourier transform and operator theoy
運用傅立葉變換、積分變換和運算元理論，討論了它們的性質，得到關于高維矩陣值小波包的雙正交公式。 -
And by far, most theories of wavelet analysis are established in, but this method is rare to be known and exists defects in the reproducing kernel space with good properties. then in the reproducing kernel space, isometric isomorphism of relation is founded between and by differential operator. and starting from the haar basis, multi - resolution analysis inis gived by folding method ; then multi - resolution analysis and orthonormal wavelet in are obtained through integral transform from to. then the reproducing kernel space can be expressed by wavelet spaces
於是，在再生核空間中，利用積分運算元建立了空間與hilbert空間的等距同構關系；並且從haar小波出發，由折疊法實現的空間中多尺度分析通過積分變換得到中多尺度分析和正交小波，使得再生核空間可以由小波空間來刻劃；從而對空間中的函數，給出了小波逼近具體表達式和相應的采樣公式，形式簡單易於數值分析。 -
Comprehensively discuss the issues in application, adaptive condition and performance, propose a fast arithmetic of forward modeling and depth migration in common shot gathers with one - way acoustic wave equation based on vrselrf, and verify the arithmetic by numerical simulation. concisely discuss the cause of the creation of evanescence and the problem of lateral amplitude discontinuity result from it. fourthly, use the reflectivity model, computed to describe the fracture model, with the formula of computation reflectivity based on elastic - acoustic approximation, and the wavelet model computed by the method, wavelet creation with fourier transform, we proposed, in conjunction with vrselrf wavefield extrapolation operator
第三，將頻率波數域穩定的變參考慢度rytov近似廣義屏波場延拓運算元（ vrselrf ）應用於疊前與疊后正演模擬、疊前與疊后深度偏移，對演算法應用中應注意的問題、適用范圍、性能等作了較為全面的論述；提出了基於vrselrf的單程聲波方程共炮記錄正演模擬和深度偏移快速演算法，並通過數值模擬試驗對演算法進行了驗證；簡要地討論了倏逝波的產生原因及其帶來的橫向振幅不連續性問題。 -
Author, starts from the one - way wave equation of wavefield extrapolation, research the relationship and transform condition of wavefield extrapolation operators, and propose the steady variational reference slowness rytov approximation general screen wavefield extrapolation operator ( vrselrf ) which can adapt severe lateral velocity variations, in frequency - wavenumber domain, and the improved wavefield extrapolation scheme, also give the method to improve the computation efficiency. the achievement establishes the theoretic basis of the whole research
首先，從波場延拓的單程波方程出發，系統地研究了頻率波數域的波場延拓運算元之間的相互關系和轉換條件並在此基礎上提出了能適應劇烈橫向變速的頻率波數域穩定的變參考慢度rytov近似廣義屏波場延拓運算元（ vrselrf ）和部分波場延拓改進方案及提高運算效率的措施，為整個研究打下理論基礎。 -
A blended transform domain watermarking based on multi - value sequence modal operator
基於多值序列模運算的混合變換域水印 -
The cubic b - spline smoothing filter operator to perform multi - scale filtering was designed using the characteristics of wavelet transform
摘要利用小波變換的特點，設計了3次b樣條平滑濾波運算元。 -
Speech feature based on teager energy operator and frequency warped wavelet transform
基於置信度的無監督說話人自適應語音識別 -
To solve the problem of watermark encryption, a novel permutation operator is proposed, based on which the permutation scheme and the substitution scheme for watermark encryption are designed ; encryption algorithms in spatial domain and transform domain are proposed. the ciphered image can be jpeg compressed before it is transmitted, and low - distortion plain image can be obtained after decrypting the compressed encryption image
為解決水印信息加密問題，我們在第三章提出混沌有序化運算元方法，設計了水印信息加密的置亂模塊和替代模塊;還給出了空間域和變換域數字圖像加密演算法，密文圖像可以經過有損壓縮再傳輸，經過解密得到低失真的明文圖像。 -
Firstly, the paper starts from the one - way wave equation of wavefield extrapolation, research the relationship and transform condition of wavefield extrapolation operators, and improves on the wavefield extrapolation operator and so heightens the operation efficiency, and chooses the pspi that fits to the lateral variation of velocity to resolve the wave - equation, which lay a foundation of the theoretic study
首先，從波場延拓的單程波方程出發，研究了頻率?波數域的波場延拓運算元之間的相互關系和轉換條件，並在此基礎上改進了波場延拓方案和提高了運算效率，選擇了適合於縱橫向速度劇烈變化的pspi方法求解波動方程，為整個研究打下了理論基礎。
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