迭代重建 的英文怎麼說

中文拼音 [diědàizhòngjiàn]
迭代重建 英文
iterative approximation
  • 迭 : Ⅰ動詞（輪流; 替換） alternate; change Ⅱ副詞1 （屢次） repeatedly; again and again 2 （及） in tim...
  • 代 : Ⅰ動詞1 （代替） take the place of; be in place of 2 （代理） act on behalf of; acting Ⅱ名詞1 （歷...
  • 重 : 重Ⅰ名詞（重量; 分量） weight Ⅱ動詞（重視） lay [place put] stress on; place value upon; attach im...
  • 建 : Ⅰ動詞1 （建築） build; construct; erect 2 （建立; 設立; 成立） establish; set up; found 3 （提出;...
  • 重建 : 1. rebuild; reconstruct; reestablish; rehabilitate 2. reestablishment; reconstruction
  1. Compared with straight ray tracing, inversion of bending ray tracing is better when data of test are accurate. on the other hand, natural weight is introduced and numerical simulations and experiments of wlm on inversion of velocity and attenuation are also made, which show that wlm, with resistance of noises and convergence of iteration, may get good re - construction images

    本文引入了物理意義明確的自然權，對基於自然權的加權阻尼最小二乘反演演算法（ wlm ）在速度反演、衰減反演中進行了數值模擬和試驗研究，結果表明wlm均能獲得良好的重建圖像，迭代收斂，抗噪能力強。
  2. We performed crosswell tomography on a real crosswell seismic line from shengli oilfield by using simultaneous iterative reconstruction technique ( sirt ) based on shortest path tree ( spt ) curved ray tracing

    摘要利用基於最短路徑樹彎曲射線追蹤的聯合迭代重建層析成像（ sirt ）技術進行井間地震層析成像，對勝利油田的一對井間實際資料進行了處理。
  3. In the application of mini - micro - robot visual perception, there is a need for fish - eye lenses for capturing wide field of view for navigation. though fish - eye lenses provide a wide field of view ( 180 ), they introduce significant distortion in images and the acquired images are quite warped, which makes conventional camera calibration algorithms no longer work well. this paper presents an accurate calibration framework for fish - eye lens ( a high distortion lens ) camera stereo vision system. the accurate calibration model is formulated with radial distortion, decentering distortion and thin prism distortion based on the fisheye deformation model. using fish - eye and non - linear camera model, the author employs levenberg - marquardt method to realize precise non - linear calibration for wide - view - scene dense depth image recovery

    魚眼鏡頭成像立體視覺系統在微小型機器人視覺導航和近距離大視場物體識別與定位中有著廣泛的應用.盡管魚眼鏡頭攝像機具有很大的視場角（接近180 ） ，但同時也引入嚴重的圖像變形，常規的攝像機標定方法無法使用.該文提出一種標定魚眼鏡頭攝像機立體視覺系統的方法.在魚眼鏡頭變形模型的基礎上，通過考慮魚眼鏡頭成像的徑向變形、偏心變形和薄棱鏡變形，建立了魚眼鏡頭成像的精確成像模型，然後，利用非線性迭代演算法，精確求解攝像機外部參數、內部參數.實驗表明，使用該方法得到的立體視覺系統參數滿足精確恢復大場景稠密深度圖的要求
  4. Due to the incompleteness of model library and uncertainty of modeling knowledge, qualitative compositional modeling is a process of " generate and test " during which the composed model must be modified and improved. there are two separate sub - tasks about cm, model composition and model simulation, which communicate with each other through qualitative differential equations ( qde )

    定性模型的特點，決定了定性組合建模是一個需要重復調整和完善的迭代過程，建模與模擬是通過定性微分方程相關聯的兩個子任務，建模是模擬的基礎，模擬是對建模結果的檢驗。
  5. Secondly, the method applies a linear iterative procedure in calculation and the svd is used as a main tool, avoiding complex nonlinear optimization processes

    實現過程是以奇異值分解為基本工具的分步線性迭代計算，避免了傳統射影重建方法復雜的非線性優化環節。
  6. As for single objective optimization algorithm, a fast iterative algorithm based on conjugate gradient algorithm is presented, which makes use of extent limit of iterative optimization step in conjugate gradient with the idea of least square

    在標量優化圖像重建法中，作者以最小二乘為目標，利用共軛梯度法中迭代最優步長的區間性，提出了一種基於共軛梯度法的快速迭代演算法。
  7. In this paper, the author discusses in detail an efficient iterative image reconstruction algorithm in industrial computerized tomography ( ict ) with the narrow fan - beam projection

    本文對工業ct窄角扇束掃描方式下的迭代圖像重建演算法進行了研究。
  8. The use of tikhonov regularization theory was to solve ill - posed problem of image reconstruction and the use of sirt algorithm was to improve the quality of the final reconstructed image

    為了克服圖像重建中的不適定性問題，利用tikhonov正則化原理進行初始圖像重建。 sirt演算法則用來對初始重建圖像進行迭代改善以獲得最終重建圖像，改善了重建圖像的質量。
  9. Secondly, to analyze seismic response of the concrete gravity dam, subspace iterative method was applied to compute free vibration period of the dam, time integration method was built up for the seismic time history analysis and formulation of coupled vibration of reservoir water and dam were also deduced

    其次，針對混凝土重力壩的地震響應分析問題，採用子空間迭代法計算了大壩的自振周期，建立了地震時程分析的逐步積分方法，並且推導了庫水和壩體耦合振動的理論公式。
  10. Unfortunately, up to now, there is no an efficient algorithm to deal with the iterative reconstruction algorithm, especially from fan - scanned projections

    對于迭代重建，目前尚無很好地解決該問題的演算法，特別是對扇束投影重建問題。
  11. The main disadvantage of iterative algorithm is its slow speed and the time cost of image reconstruction is directly proportional to the number of projections and the size of reconstruction image

    迭代重建法最大的缺點是速度慢，其花費時間同投影數的多少以及重建圖像的大小成正比。
  12. But, generally cbp needs complete projection data. algebraic reconstruction to reconstruct ct images has advantages because of its simple arithmetic program and widely using

    迭代重建法的演算法設計簡單，應用范圍廣，並可以充分利用先驗知識進行重建，對不同格式的采樣數據，均可以重建
  13. For this method, the matrix inversion and iterative reconstruction are selected based on the quantity and quality of data, and then the physical model and the actually measured data are processed by using this method

    層析成像演算法根據數據量大小、品質來選擇矩陣反演法與迭代重建法，然後對物理模型、實測資料進行層析成像處理，結果獲得滿意的重建異常體圖像。
  14. In industry application, however, incomplete projections can only be obtained, so the situation is not appropriate to the transformed imaging technique and then the iterative algorithm has to be applied so that better reconstructed image can be got

    然而在工業應用中，一般得到的是不完全投影數據，其數量和結構往往無法達到解析成像技術要求的條件，因此為得到較清晰的圖像，必須採用迭代重建法。
  15. A fast and real - time algorithm to obtain some vectors of the projection matrix is proposed in this dissertation to solve the conflict of time cost by matrix obtainment and memory occupied by matrix, and speed the iterative algorithm

    作者根據扇形掃描幾何的對稱性和重疊性，提出了一種快速實時獲取投影矩陣分量的方法，較好地解決了獲取投影矩陣所需速度和存放其所佔內存空間的矛盾，提高了迭代重建演算法的速度。
  16. In order to improve the quality of reconstruction image and solve the problem that " salt and pepper " phenomena occurs in the reconstruction image, the paper proposes a novel algorithm reconstruction technique ( art ), compare the theory and capability of between them

    論文提出新的代數迭代重建演算法（ art ） ，並且比較了新的重建演算法和原有的迭代重建演算法的原理和性能，重點研究了在不完全數據重建時， art型演算法的性能。
  17. The authors established an initial velocity model based on the first break time of the actual data, then realized the forward calculation with the improved shortest path ray tracing algorithm, and applied the improved constrained damped simultaneous iterative reconstruction technique ( cdsirt ) to solve large - scale and sparse equations for inversing the near - surface velocity field

    根據實際地震數據的初至波時間建立初始速度模型；採用改進的最短路徑射線追蹤演算法進行正演；利用改進的約束帶阻尼聯合迭代重建技術（ cdsirt ）求解大型、稀疏的方程組來反演近地表的速度場。
  18. The new method ameliorates the process of old iterative method and add a new iterative parameter : convergence factor, which can improve the quality of reconstruction image by changing the iterative process and adjusting convergence factor

    該演算法改進已有的迭代過程，加入了新的迭代參數：收斂因子，通過改變迭代進程和調整收斂因子來提高重建圖像的質量。
  19. Iterative algorithms in computed tomographic reconstruction

    圖像重建的迭代演算法
  20. In chapter five to reconst ruct the three - dimensional object cubes, various deconvolution algorithms : nearest neighbor, inverse filtering and constrained iterative deconvolution are developed and applied to both computer generated and experimentally measured image cubes. the best results are obtained using an svd inverse fourier deconvolution algorithm with regularization for noise suppression

    第五章為了重建三維目標立方，發展了各種去卷積演算法：最近鄰、逆濾波和帶約束的迭代去卷積，並應用到計算機產生和試驗測量的圖像立方中，最好的結果是利用具有規則抑制噪聲的svd逆傅立葉變換去卷積演算法獲得的。
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