射影法線 的英文怎麼說

中文拼音 [shèyǐngfǎxiàn]
射影法線 英文
projective normal
  • 射 : Ⅰ動詞1 （用推力或彈力送出） shoot; fire 2 （液體受到壓力迅速擠出） discharge in a jet 3 （放出） ...
  • 影 : Ⅰ名詞1 （物體擋住光線后映出的形象） shadow 2 （鏡中、水面等反映出來的物體形象） reflection; image...
  • 法 : Ⅰ名詞1 （由國家制定或認可的行為規則的總稱） law 2 （方法; 方式） way; method; mode; means 3 （標...
  • 線 : 名詞1 （用絲、棉、金屬等製成的細長的東西） thread; string; wire 2 [數學] （一個點任意移動所構成的...
  1. And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

    研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。
  2. With the use of finite method we have developed computer simulation software for vacuum microtriodes with wedge - shaped and cone - shaped cathode on the basis of stduying deeply the field emission theory of vacuum microelectronics. the software included field section, grid point numbering, and the calculation of electric currents, transconductance and cathode capacitance, moreover, it can simulate the properties of vacuum microeletronic with variant structures and sizes. the relationship was studied and simulated among electic properties and device structures, sizes and cathode materials etc. the optimized design of vacuum microtiode was proposed

    本文在深入研究真空微電子器件場致發射理論的基礎上，根據圓錐形、楔形陰極真空微電子三極體的不同特點，分別建立了物理和數學模型，在考慮空間電荷密度影響的前提下，以有限元法為基礎採用迭代的方法計算出真空微電子三極體內的電勢分佈情況，繪制出了等勢線、電子軌跡線，並得到了器件電學性能隨幾何參數的變化情況。
  3. The aim of projective reconstructing is to estimate the position and direction of cameras through matching points in different images so lay the foundation for further reconstructing. on the basis of current methods of projective reconstructing, we used the levenberg - marquardt method to optimize the result of linear method so the precision is be improved, and we use the bundle adjustment method to entirely optimize the structure of scene and projective matrixes

    本文在研究已有射影重建演算法的基礎上，利用l - m演算法對基於基礎矩陣的射影重建演算法得到的線性結果進行優化，提高了演算法的估計精度和穩定性，並在求得所有圖象對應的投影矩陣后利用bundleadjustment方法對空間結構及投影矩陣進行全局優化。
  4. Cyclotron systems for positron emission tomography - part 2 : radiation protection labyrinths and wall entrances

    正電子放射層析x射線攝影法用回旋加速器系統.第2部分
  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. Theoretical analysis of the effects of linear birefringence on the output of a faraday mirror - typed optical current transformer

    線性雙折射對法拉第鏡式光學電流互感器輸出影響的理論分析
  7. An algorithm for connecting non - intersecting line segments into a simple polygon

    一種用射影線束族生成曲線的方法
  8. In two - view case, a method is presented for calculation 2d projective transformation and construction the virtual elements by combination of spatial points and lines. so more 3d invariants of object ' s spatial structures can be extracted from real elements and virtual eleme nts. ( 3 ) the geometric characteristics of 2d symmetric objects " in perspective images are lucubrated

    （ 2 ）擴展了2d射影變換矩陣的求解方法，將單純利用點集對應的計算模式擴展到利用直線集、點線組合等多種類型來建立兩個射影平面的對應關系；總結了平面上基於點、直線元素可求解的多種3d不變量；提出了雙視圖下由點、直線元素的多種對應關系求解2d射影變換來構造「虛元素」的方法，結合「實元素」和「虛元素」可以提取更多的空間3d不變量。
  9. For bilateral symmetry objects, the techniques on symmetry - point detection and symmetry - axis extraction are presented based on harmonic conjugation relationship. for rotated symmetry objects, the techniques on rotated units description and rotated symmetry center extraction are presented based on center invariants of objects. further more, by using 3d invariants and 2d projective transformation, an approach to recover shape from part symmetry objects is realized on some conditions

    （ 3 ）深入分析了2d對稱性目標透視成像的幾何特點，將共點四線交比用於目標輪廓上的關鍵點的特性描述中；利用調和共軛關系，提出了一種針對左右對稱型目標的對稱點檢測和對稱軸提取的演算法；利用交比關系構造了目標的形心不變量，提出了一種針對旋轉對稱型目標的旋轉對稱單元判定、旋轉中心提取的演算法；進一步利用3d不變量和2d射影變換，實現了一定條件下的對稱性目標的形狀恢復技術。
  10. On the basis of analyzing roundly origins of rs image geometrical distortion and existing methods of geometrical correction, the route of geometrical correction for the images from the miniature uav rs system was brought forward

    通過全面分析遙感影像幾何變形的來源和現有幾何糾正方法，提出了一條基於ccd相機誤差綜合標定和與正射影像配準的幾何糾正技術路線。
  11. The outcome suggest that, firstly, the change of light transmission with the continuous change of parameters is periodic ; secondly, as far as the degree of effect is concerned, the light transmission of air - spaced prisms is much more sensitive to the change of the parameters than that of the glue spaced ones ; thirdly, as to the prisms glued with the same dielectric, the effect of prisms whose optical axis parallels to the glued layer is intense than those whose optical axis parallels to the plane determines by the normal of incident face and that of the cut face

    研究認為，激光偏光棱鏡的光強透射比隨各參量的連續變化都呈現出一定的周期性；各參量對空氣隙型偏光棱鏡的影響要比對膠合型棱鏡的影響大的多；同種介質膠合的棱鏡，各參量對光軸平行於切割斜面的設計類型比光軸平行於切割面的法線和入射端面的法線所組成的平面的設計類型的影響要大。
  12. The validity of the subsection simulation method is proved, in which postprocessing technology is widely used. the sixth, the static simulation is neces sarily to find out the dynamic system ' s initial state for dynamic simulation. the gun is looked upon as a hyper - equilibrium structure, and a so - called " parallel projection method " is brought forward for the gun ' s static simulation

    提出了一種求解線性方程組的方法?平行投影法，針對adams對超靜定系統靜態分析不力的情況，研究了求解全炮靜態問題的途徑和方法，並應用平行投影法求解車體懸掛的初始平衡力，求得了較符合客觀事實的解，從而完成了火炮發射前的靜態分析。
  13. Non - destructive testing. characteristics of focal spots in industrial x - ray systems for use in non - destructive testing part 2 : pinhole camera radiographic method

    無損檢驗.無損檢驗用工業x射線系統中焦點的特性.第2部分:針孔照相機射線攝影法
  14. A linear camera self - calibration technique based on projective reconstruction

    基於射影重建的線性攝像機自標定方法
  15. Non - destructive testing. characteristics of focal spots in industrial x - ray systems for use in non - destructive testing. part 3 : slit camera radiographic method

    無損檢驗.無損檢驗用工業x射線系統中焦點的特性.第3部分:狹縫照相機射線攝影法
  16. Phantoms for x - ray computed tomography

    X射線計算機計算的斷層攝影法用模型
  17. This algorithm not only have the charicristic of local reconstruction that could reduce the amount of x - ray exposure and computations in reconstruction, but could reduce the noise in the conditions of keep same image quality as reconstructed in the filter - backprojection algorithm as well

    這種演算法具有局部重建特性，從而降低了x射線的輻射劑量和演算法的運行時間，在保證和傳統的濾波反投影法具有基本相同的圖像重建質量的條件下還具有一定的去噪性能。
  18. The method uses the properties of wavelet to reconstruct a local region of the cross section of a body, using almost completely local data, therefore reduces the amount of exposure and computations in reconstruction, while has the same quality as filtered backprojection algorithm

    利用小波的特性，該演算法僅使用幾乎是完全局部的投影數據去重建身體剖面上的某個局部區域，從而大大降低了x射線的輻射劑量和演算法的運行時間，同時還具有和傳統的濾波反投影法基本相同的圖像重建質量。
  19. 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。
  20. X ray topography x

    射線局部厚層斷層攝影法
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