radon transform 中文意思是什麼

radon transform 解釋
拉冬變換
  • radon : n. 【化學】氡〈由鐳裂變後生成的放射性元素，舊名 radium emanation 〉。 radon daughters氡放射性衰變產物〈香煙煙塵中的一種放射性微粒，對被動吸煙者的健康有害〉。
  • transform : vt （使）變形；（使）變化[轉化，轉變]；變態，改變（性質、機能等），改造，改革；【數學】變換；【電...
  1. Doppler centroid estimation of sas based on radon transform

    變換的合成孔徑聲納多普勒中心估計
  2. The experimental results show that the small targets submerged by the large ones can be detected effectively, and better accuracy and shorter computation can be obtained by using the modified rwt than radon - wigner transform

    本章首先分析了基於離散多項式變換（ discretepolynomial - phasetransform ， dpt ）參數估計的原理，並將dpt應用於多目標分辨中。
  3. This kind of two - channels wavelets decomposition methed reconstruct the wavelet coefficients of an image from the radon transform data, and these coefficients were made reverted wavelet transform obtain the original image. wavelets subsampled on the quincunx lattice, which can have cut - off at an angle during the wavelets decomposition

    基於不可分離mra的小波演算法將投影數據進行二維濾波，其二通道的小波分解直接得到小波的近似系數和細節系數，這些系數再經過逆小波變換就得到了最終的重建圖像。
  4. It is based on the principle : under a number of angles, the x - ray attenuation in a cross section of a human body is measured by detector resulting in a set of profiles. this set of profiles is called the radon transform of the object in mathematics. the problem now is to reconstruct a two - dimensional image via inverting its radon transform

    它所基於的成像原理是：人體的某個剖面在若干個角度上被x射線束照射，照射后x射線的衰減量被檢測器記錄下來，形成投影集合，數學上將這個投影集合描述為該剖面的radon變換，通過反演radon變換就能夠重建剖面的二維圖像。
  5. Computerized tomography ( ct ) is a typical non - invasive examination techniques in medicine, which can depict anatomical structures without damaging the human body. lt is based on the principle : under a number of angles, the x - ray attenuation in a cross section of a human body is measured by detector resulting in a set of profiles. this set of profiles is called the radon transfoim of the object in mathematics. the problem now is to reconstruct a two - dimensional image via inverting its radon transform

    它所基於的成像原理是：人體的某個剖面在若干個角度上被x射線束照射，照射后x射線的衰減量被檢測器記錄下來，形成投影集合，數學上將這個投影集合描述為該剖面的radon變換，通過反演radon變換就能夠重建剖面的二維圖像。
  6. It is based on the radon transform and inverted radon transform

    其成像的數學原理是: radon變換及其逆變換
  7. Secondly, we study the preprocessing part of system, a method of bidirectional multi - resolution motion estimation via radon transform is proposed, which can be used to estimate both pixel and subpixel motion vectors with robustly accurately and efficiently. bad frames elimination via the variances of lr frames in the sequence is preformed before the implementation of the super - resolution algorithm

    其次討論了超分辨預處理過程，提出了基於radon變換的雙方向多解析度運動估計方法，演算法可以穩健、精確的在較大范圍內實現亞象素運動估計;以圖像方差為標準，判斷序列圖像中個別幀損壞嚴重為「壞幀」 ，在超分辨重建之前預先去除。
  8. Reconstruction of seismic traces by parabolic radon transform

    基於拋物線拉東變換的地震道重構
  9. An multi - scale iris recognition algorithm based on radon transform

    變換的多尺度虹膜識別演算法
  10. Based on above analysis, a acceleration estimation method based on radon wigner transform ( rwt ) is proposed

    基於上述對高頻地波雷達機動目標回波的分析，本文擬採用rwt方法進行加速度估計。
  11. In the area of wake detection algorithm, the deficiency of the detection algorithm based on radon transform is pointed out. a wake detection algorithm based on normalized grey level hough transform is proposed. it is improved to normalized grey level based on the standard hough transform

    在艦船尾跡檢測演算法方面，分析了基於radon變換尾跡檢測演算法存在的不足，提出基於歸一化灰度hough變換的尾跡檢測演算法，將標準hough變換改進為歸一化灰度hough變換，並推導出尾跡端點反演公式。
  12. Plentiful simulations are presents and discussed. in the third chapter, a modified radon - wigner transform algorithm with two - step searching and clean method is proposed, which is used in radar multi - target resolving and parameter estimation

    首先分析了基於radon - wigner變換的參數估計原理，提出了變尺度兩級搜索演算法，並應用頻域信號分離技術，對原radon - wigner變換改進，並進行了模擬。
  13. M. m. nessibi and k. trimeche studied the theory of generalized wavelet transform on the underlying manifold of square integrable radial functions space on the heisen - berg group hn. they constructed an inversion formula of the radon transform on the underlying manifold by means of generalized wavelet

    M . m . nessibi和k . trim che研究了海森堡群h _ n上平方可積徑向函數空間，在其基礎流形上建立了廣義小波變換理論；並利用所引進的廣義小波，得到radon變換在該空間上的一個逆公式
  14. The application of linear radon transform in coherent noise elimination and weak signal extraction

    變換在弱信號提取及強干擾噪聲抑制的應用
  15. This thesis developed an algorithm to reconstruct the wavelet coefficients of an image from the radon transform data. this algorithm is similar to the conventional filtered backprojection algorithm, except that the filters are now angle dependent, and the backprojection gives us the wavelet coefficients of the reconstruction, which are then used to synthesize the reconstruction

    該演算法與傳統的濾波反投影法相似，不同的地方在於，演算法中用到的濾波器是與x射線的照射角度相關聯的，而且反投影后得到的是待建圖像的小波分解系數，這些系數再經過逆小波變換就得到了最終的重建圖像。
  16. In chapter three, as an application of the theory of generalized wavelet transform, we obtain an inversion formula of the radon transform on x

    在第三章中，我們利用laguerre超群上廣義小波變換的方法得到了radon變換在該空間上的一個求逆公式
  17. Invariant image recognition based on radon transform

    變換的矩不變量及其應用
  18. But in the process of the inverted radon transform, the recovery of an image at any fixed point requires the knowledge of all projections of the image

    但是在randon變換求逆的過程中，為了重建圖像中任意一個點的信息，它需要用到待建圖像的所有投影數據。
  19. The modified effect of light in particles flow is described according to the theory of extinction light ( law of lambert - bear ), moreover, the radon transform formula is educed according to light scanning principle, so the inverse problem of extinction tomography is elicited

    根據消光法原理（ lambert - bear定律）描述了光在顆粒場中的調制效應，並根據光線掃描原理得出radon正變換式，從而導出了消光層析成像的逆問題。
  20. However, wigner - ville distribution is n ' t enough effective applied to multicomponent signals processing for existing crossed items, sometimes signal items completely ca n ' t be distinguished from distribution for serious disturbance of crossed items. in addition, we can utilize the wigner - ville distribution to reduce the random noise of signals in that wigner - ville distribution is n ' t enough sensitive to noise. in theory, radon - wigner transform of lfm signals produces a distinct maxima ( peak ) in the radon - wigner plane, so it describe effectively the feature of the lfm signals and suppress effectively the crossed items along with wigner - ville distribution. we can utilize the radon - wigner transform to reduce the random noise of lfm signals in that the noise distrbute as dot at random in the radon - wigner plane

    另外，維格納-威利分佈是完全有噪的，但它對噪聲是不敏感的，因此可以利用維格納-威利分佈實現對含噪信號的去噪處理。理論上線性調頻信號的radon - wigner變換在radon - wigner平面上以尖峰形式表現，因此radon - wigner變換能夠有效描述線性調頻信號的物理特徵，抑制在維格納-威利分佈中產生的交叉項。在radon - wigner平面中隨機噪聲是呈點狀隨機散布開的，因此利用radon - wigner變換還能對含噪線性調頻信號進行去噪處理。
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