data reconstruction 中文意思是什麼

data reconstruction 解釋
數據恢復
  • data : n 1 資料，材料〈此詞系 datum 的復數。但 datum 罕用，一般即以 data 作為集合詞，在口語中往往用單數...
  • reconstruction : n. 1. 重建；改造；復興。2. 〈美國〉南北戰爭后南部各州的重建。
  1. Based on the principles to respect believable and higher precise paleomagnetic data of blocks and to pay attention to the similarity of paleo - biogeography and the coordination of tectonic evolution, the paleomagnetic data of chinese continental blocks and adjacent areas for paleozoic and triassic were collected, the chinese continental blocks were laid up on the reconstruction of global paleo - continents with similar scale

    摘要在尊重比較可靠的、測試精度較高的地塊古地磁數據，重視生物古地理與地質構造演化史的相似性和協調性等原則的基礎上，筆者編制了中國大陸及鄰區各陸塊古生代和三疊紀的古地磁數據表，並採用類似的比例尺，將中國各陸塊放到相應的全球古大陸復原圖上去。
  2. Sequentially, the author discussed the technologies of medical image 3d visualization according to the clinical applications. with the development of computer, 3d visualization and computer graphics, the 3d visualization of medical images has progressed from fourier transform and convolve inverse projection to mpr ( multi - planar reformation, mpr ) and mtp ( maximum intensity projection, mtp ), nowadays, the real 3d reconstruction method, surface and volume rendering has risen. the image registering, image segmentation, pixel data set construction and 3d special interpolation are the key technologies in medical images 3d reconstruction

    隨著計算機技術、三維可視化理論和計算機圖形學的發展，醫學圖像的三維可視化技術也從傅立葉變換、卷積反投影等基本圖像處理演算法，發展到真正的三維重建演算法：面繪制和體繪制；醫學圖像的三維可視化技術的應用也從三維醫學成像發展到虛擬內窺鏡，以及今天的虛擬可視化人體研究；而圖像的配準、圖像分割、體數據集的構建、三維空間插值則是醫學圖像三維可視化實現過程中的關鍵技術環節。
  3. The image reconstruction algorithms is thoroughly researched. the filter back projection ( fbp ), algebra reconstruction technology ( art ) and fan beam data rearrangement algorithm used in medical computer tomography are improved. the noser algorithm, linear neural networks method and hopfield neural networks method are presented and gain the better result of image reconstruction

    深入研究了圖像重建演算法，改進了醫學ct的濾波反投影演算法、代數重建技術和扇束投影數據重排方法，提出了帶圖像光滑約束的noser演算法、線性神經網路方法和hopfield神經網路方法，並得到了較好的圖像重建結果。
  4. Classical reconstruction algorithms assume that the x - ray is monochromatic while in fact x - ray is polychromatic either in industrial or in medical ct, so only polychromatic projection data have been obtained in actual ct system

    經典的ct重建演算法基於x射線源為單色源的假設，而實際上由於工業ct機或醫用ct機的x射線是多色的，通常只能得到多色投影數據。
  5. Using the normal and neighbor relationship, classification of scattered data points is realized according to the quadric surface. the typical algorithms of surface reconstruction from 3d scattered data points are introduced, and then we discuss the current surface tessellation algorithms about their adaptive range, low efficiency

    本文首先對三維散亂數據點重構曲面的典型演算法和現有的曲面網格劃分演算法進行了分類與比較，針對現有的散亂點曲面重建演算法存在的低效率和局限性問題提出了相應的解決方案。
  6. In this thesis, we study some mainstream surface reconstruction algorithms for unorganized data set and adopt the algorithms based on delaunay triangulation

    全局重建採用基於cocone方法的演算法，並為了檢測邊界而對此方法進行了改進。
  7. 4. an roi coding method realized by foveation technology and two of its extended applications are presented. by unevenly upscaling the wavelet coefficients, the method can not only reconstruct the roi data priorly in a low bit - rate codestream, but make the progressive reconstruction of the image data more convenient for the human vision system

    該方法根據人類視覺生理特點，將小波變換系數進行非均勻的上移位處理，不僅能夠保證感興趣區域圖像數據在低比特數據流中的優先恢復，還實現了使圖像的漸進恢復過程更加適合人類生理視覺感觀特點的效果。
  8. The research on 3d reconstruction based on remote sensing data has become one of the focuses in the field of digital photogrammetry, remote sensing and geographic information system. combined with reconstruction of cybercity, this thesis studies how to build such a system

    基於遙感數據的三維重建技術是當前數字攝影測量、遙感和地理信息系統等領域的重要研究方向。本文結合城市區域三維幾何重建的工作，對基於遙感數據的重點目標區三維重建系統的建立和系統設計進行了研究。
  9. The re technique is generally composed of 3 - d surface digitalization, data procession, surface reconstruction, cad 3 - d modeling and rapid manufacture, etc. the reverse engineering cad / cam system has broad industrial usage, and the research work has extremely theoretic and application importance

    Re技術通常涉及三維測量（表面數字化） 、數據處理、曲面重構、三維建模及快速製造等相關技術。逆向工程cad cam系統具有廣泛的工業用途，其研究開發工作具有較大的理論意義和應用價值。
  10. Then r / s analysis, phase space reconstruction of the system, chaos analysis and fractals analysis are done through matlab program, based on original data of hushen stock markets compositive index from year 1991 to year 2002. and the author draws a conclusion based on original data that china ' s stock market obeys low - dimension fractals and ebb - chaos in terms of the experimentation result : hurst exponents are between 0 and 1, memory cycles are obvious, lyapunov exponents are more than zero and chaotic attractors correlative dimensions are between 2 and 3 in hushen stock markets in this thesis the concept information noises is put forward. stock market information about policy and company of the last ten years is packed up and classified for regulators make decisions in terms of power the factor influences the stock market index

    之後文章以中國股市1991年至2002年上海和深圳綜合指數每日收盤價原始數據為研究對象，在matlab程序實驗條件下，進行了兩地股市系統的r / s分析、系統相空間重構、混沌分析、分形分析；獲取了兩地股市系統的赫斯特指數（滬深股市赫斯特指數均大於0 . 5而小於1 ） 、非周期記憶循環周期（滬深股市都有明顯的記憶循環周期） 、最大李雅普諾夫指數（兩市都大於0 ）和吸引子的關聯維數（兩市都在2到3維之間） ；從而得出中國股市系統是低維分形的、弱混沌的（基於原始數據）結論。
  11. Due to the fact that the problem of reconstructing image from compton scattering energy spectral data is an ill - posed problem, any error or noise in the measurements will be amplified in the reconstruction results

    由於從康普頓散射能譜直接求逆重建密度圖像是一個不適定性問題，測量的微小誤差會在重建結果中被放大。
  12. At last, 3d reconstruction is completed based on the calibration data. real image and synthetic data experiment results are presented in the end of each chapter

    最後基於獲得的標定數據完成三維重構並最終給出真實或者模擬的三維重構實驗結果。
  13. Modeling in current 3d cad softwares such as catia, pro / engineer are mainly based on sketch design. according to the idea of modeling and on the basis of segmenting 3d measured data with feature design intention, this thesis studies the reconstruction methods of model sketch - based feature such as extruded and rotational features in structural part models

    當前主流的3dcad軟體如catia 、 pro engineer等在實體建模時主要是基於草圖設計的。本文在特徵數據分割的基礎上，結合正向設計的思路，著重研究結構件中的拉伸、旋轉等基於草圖的特徵模型重建問題。
  14. In the terms of interpolation, the image reconstructed from nearest interpolation or linear interpolation has good edge but serious noise ; reconstruction from 4 * 4cubic interpolation or three b - spline or three - order lagrange interpolations has better local character. 2 x 2cubic interpolations which has both better edge and local character is the ideal interpolation, the following is the basic principle during reconstruction : ( 1 ) the more width of interpolation, the more number of summation and the more order of interpolation polynomial, the higher of density resolution ; ( 2 ) the more of interpolation polynomial and width of interpolation, the more of reconstruction time simultaneously, aimed at eliminating the effects of noise contained in projection data, in this paper, author analysis cause and effects of common artifacts. importantly, discusses convolution back - projection reconstruction algorithm with a shift axis of rotation has been derived for correcting images that acquired with a divergence axis of rotation using the fan beam geometry with an angle - equaled detector

    在ct圖像重建時，選擇有限帶寬窗有較好的空間解析度，三角形窗有較好的密度解析度，選擇餘弦窗則使得空間解析度與密度解析度的折衷；從窗函數的頻譜角度來講，可以用於圖像重建的一個良好的卷積窗函數應該具備以下條件： （ ? ）小的3db帶寬b ，即最小的主瓣寬度； （ ? ）最小的旁瓣最大峰值a ； （ ? ）最大的旁瓣峰值衰減速度d ；就內插函數而言，臨近點內插與線性內插重建圖像噪聲大，但有較好的邊緣與細節； 4 4三次內插、三次b -樣條與四次拉格朗日多項式內插圖像平滑，局部特性較好。
  15. It analyses the principle and methods of waveform reconstruction of the data acquisition module under double a / d parallel time - interleaved real - time sampling mode and random sampling mode. it also illustrates the flow of the monitoring software and the application of fpga technology in this design

    主要分析了雙a / d分相數字化實時采樣方式下和等效時間隨機采樣方式下採集模塊的工作原理及波形重建的方法，並簡單介紹了監控軟體流程及fpga在本設計中的應用。
  16. The results indicates that the cubic logarithm polynomials can accurately reconstruct the raw thermal images in the experiment, and can effectively suppress the interference to defect recognition caused by random noise and uneven heating in the pt testing of composite laminates ; the digital images from data reconstruction have clearer defect display or higher defect resolution than the raw thermal images, and the quadratic coefficient image of cubic logarithm regression shows the highest snr

    結果表明利用三次對數多項式回歸即可精確地重建本次實驗的原始熱像，同時能有效地克服復合材料層壓板脈沖熱像檢測中隨機噪聲和加熱不均效應對缺陷識別的干擾；經過數據重建后所作的數字圖像比原始熱像有更高的缺陷顯示度或分辨力，其中以三次對數多項式回歸公式中的二次項系數所作的數字圖像的信噪比最大。
  17. For example, for well over a century serious students of agriculture the world over have kept themselves busy trying to document historical changes in production indices such as seed yield ratios, yields per acre hectare, yields per laborer employed, etc. in so doing, they have often undertaken ingenious, even heroic acts of data reconstruction via interpolation and extrapolation from incomplete data

    例如，一個多世紀以來，這個世界上嚴肅的農業學者一直忙於整理生產指數諸如種子和產量比、每英畝或公頃和產量比、人均勞動力和產量比等，以顯示農業的歷史變化。在從事這些項目過程中，學者們經常通過對不完整資料的內插和外推來艱苦和精巧地重建數據。
  18. In this paper, a missing data rotative reconstruction algorithms based on rough theory is proposed, and the complexity of the algorithms is analyzed, finally a missing data reconstruction experiment with a typical dataset is conducted

    摘要提出了一種基於粗糙集理論的缺失數據循環搜索重建演算法，分析了演算法的復雜性，並選擇一個典型數據集進行了缺失數據重建的實驗。
  19. There are two research works is involved in this thesis. first, an algorithm of data reconstruction in videos and images is proposed. base on this reconstruction technology, we developed the precept of layer coding in sender, the structure of data stream and the precept of post processing in receiver with analyzing the scheme of real time transmission of video in network

    本文的研究工作包括兩個方面：首先提出了一種視頻與圖像中數據丟失的重建演算法，以此為基礎對基於網路的實時視頻傳輸方案進行了研究，提出了信源端分層編碼方案、數據流組織方案以及接收端後向處理方案。
  20. The scanning converter comprises five parts : video signal decoding, data reconstruction, progressive video signal encoding, control signal producing and communication

    掃描轉換器包含了電視信號的解碼、解碼后數據的重構、逐行信號編碼、控制信號的產生以及通信五部分。
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