linear projection 中文意思是什麼

linear projection 解釋
直線投影
  • linear : adj. 1. 線的,直線的。2. 長度的。3. 【數學】一次的,線性的。4. 【動、植】線狀的;細長的。5. 由線條組成的,以線條為主的,強調線條的。
  • projection : n 1 射出,投擲,發射,噴射。2 投射;投影,投影法;(地圖)投影圖製法;【電影】放映。3 凸出;凸出...
  1. Through analyses of epipolarity geometry of the linear ccd push - broom images and frame perspective images, based on the projection track method, epipolarity of linear ccd push - broom image is established and the properties of epipolarity curves is discussed, and a new epipolarity model based on the simplified push - broom sensor model is proposed. for stereo images of frame perspective and linear perspective, how to set up of epipolarity is studied in terms of fundamental matrix in computer vision, and an algorithm of epipolarity solution that only depends on coordinates relation of identical point is presented. 4

    通過線陣ccd推掃式影像和框幅式中心投影影像核線理論的對比研究,利用投影軌跡法建立了線陣ccd推掃式影像的核線模型,分析和總結了它的基本特性;針對基於共線方程的簡化傳感器模型,提出了一種新的核線模型;對框幅式中心投影立體影像和線陣ccd推掃式立體影像,利用計算機視覺中的基本矩陣研究核線關系的建立,提出了一種單純依靠同名點坐標關系的核線模型解法; 4
  2. 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。
  3. When applied in the analysis of high - dimensional bifurcations and structural stabilities a series of coordinate plane projection ( cpp ) transformations are done firstly. then investigate the property of the original system through these 2 dimensional time - varying linear subsystems. the fine structure and mechanism are explored with tspdr

    Tspdr應用於高維分岔、結構穩定性的分析時,先對原系統進行cpp變換,然後通過對一系列2維時變線性系統的分析來研究原系統的性質,觀察其微觀結構,揭示其運動機理。
  4. Comparison between projection methods and jacobi iterations for system of linear equations

    迭代法和投影法之比較
  5. Lbp ( linear back projection ) method which is used in multiphase tomography is adopted to deal with ill matrix and speed up reconstruction

    進而藉助于多相流電容成象中的lbp法,處理病態矩陣和提高建象速度。
  6. 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。
  7. Rather, in this paper, two straightforward image projection techniques, termed image principal component analysis ( 1mpca ) and image fisher linear discriminant analysis ( imlda ), are respectively developed to overcome the weakness of the conventional pca and lda as applied in image feature extraction

    在orl標準人臉庫和nust603人臉庫上的試驗結果表明,與通常的主分量分析與線性鑒別分析方法相比,圖像投影鑒別分析與主分量分析技術將特徵抽取的速度提高了一個數量級以上。不僅如此,其識別精度依然高於傳統的eigenfaces與fisherfaces方法。
  8. Through a deep study over the epipolarity based on the projection track method, the author puts forward the approximate line constraint method of dynamic epipolarity, and sets up constraint conditions of epipolarity in linear ccd push - broom stereo image matching, and proposes an imaging constraint method on the basis of application analysis of epipolarity, and taking imaging characteristics into account. 5

    通過深入研究基於投影軌跡法的核線模型,提出了動態核線的近似直線約束方法,建立了線陣ccd推掃式影像立體匹配的核線約束條件;在核線應用分析的基礎上,結合影像立體成像的特點,提出了一種基於核線的成像約束方法。
  9. Three - term memory gradient rosen and solodov projection method for nonlinear programming with linear or nonlinear inequality constraints

    解帶線性或非線性約束最優化問題的混合三項記憶梯度投影演算法
  10. The application of semantics is discussed as follows : the projection relation semantics leading to recognizing cylinder, the region semantics leading to recognizing linear sweeping, the free element semantics leading to recognizing the feature which the cylinder is cut by plane. last, a prototype system is developed according to the semantics model. the system can read dxf that contains 2d engineering drawing information and recognize the 3d feature

    接著,根據工程語義模型表述,詳細分析了各個類別、層次以及類別之間表達的工程語義的特點與內容,然後進行零件的特徵分類,從特徵識別的角度探討了工程語義在圖樣理解的應用,並詳細討論了圓柱體、線性拉伸體、圓柱體的平面截切特徵從投影語義、連通域語義、游離圖元語義引導識別的應用過程。
  11. Fortunately, we can solve this problem by using ap ( alternating projection ) algorithm, by this way ; the computational load can reduce dramatically. doa estimation is mostly research base on linear array, because of the limitation of linear, it can estimate the azimuth only ; solid array can estimate the azimuth and elevation, in this paper, the solid array is used for doa estimation ; when the signal sources are uncorrelated, the music algorithm is chosen, using mdl / aic algorithm, we attain the signal number of sources

    本文採用立體六元陣進行測向,在非相干信號源條件下,採用music演算法進行doa估計,採用基於信息論原理mdl準則或者aic準則判斷信號源數目,通過對陣列流形的研究,指出基於圓陣的陣列流形具有的某種對稱性,利用該對稱性來降低運算量,並且通過對演算法的研究,提出用維數較小的信號子空間或噪聲子空間來計算空間譜,進一步減小music演算法運算量。
  12. The grid linear projection showed not only higher precision and speed but also better self - adapting in theoretical analysis

    同時,為了滿足對更高性能演算法的要求,在標準投影演算法的不足的基礎上,提出了全網格線性投影演算法。
  13. Secondly, image enhancement technique based on linear filtering is adopted. a new image segmentation method by means of automatic multilevel threshold is given, which realizes partial multilevel threshold segmentation based on image region partition of gray - level position projection, removes the influence of uneven illuminance or uneven gray - level distribution on goal recognition, and resolves the problem of error segmentation caused by threshold step between adjacent regions by threshold transition. the method has well robustness

    在圖像處理時,採用基於線性濾波的圖像增強方法,並提出了一種新的自動多閾值圖像分割方法,該方法以基於灰度位置投影的圖像分區實現局部多閾值分割,克服了不均勻照明或不均勻灰度分佈對目標識別的影響,同時,通過閾值過渡很好地解決了相鄰區域閾值「階躍」引起的錯誤分割問題,具有很好的魯棒性。
  14. Linear projection analysis, including principal component analysis ( or k - l transform ) and fisher linear discriminant analysis, is the classical and popular technique for feature extraction

    線性投影分析,包括主分量分析(或稱k - l變換)和fisher線性鑒別分析,是特徵抽取中最為經典和廣泛使用的辦法。
  15. In inverse problem of ert, the linear back projection algorithm based on sensitivity field is used to reconstruct the qualitative image. assume that the change of conductance is slight, so the sensitivity can be approximately

    在電阻層析成像的成像演算法方面,論文中使用了基於敏感場的線性反投影演算法,假設電導率分佈的變化不是很大,則場內敏感場系數的分佈可近似的認為不變,這樣就可利用敏感場矩陣直接求取多幅圖像。
  16. Finally, a new 3d surface ranging method based on a digital fringe projection and shifting technique is systematically studied and non - linear rectification algorithms which reduce measurement error is proposed. at the same time, the noise - immune phase unwrapping algorithm is deeply studied and a new algorithm for phase unwrapping of phase map is proposed. experiment make known the algorithm can reduce measurement error, bypass the noise points automatically, solve the problem of the shade sheltering or cavity, overcome the error propagation problem and better results have been obtained

    論文最後系統研究了基於數字相移條紋投影曲面三維測量方法,創造性地提出了一種減小測量誤差的非線性校正演算法,取得了預期的效果;同時對相位去包裹演算法進行了較深入研究,提出了一種噪聲圖像相位去包裹方法;實驗表明該方法能減小非線性測量誤差,自動避開噪聲點和間斷點,獲得了滿意的結果。
  17. In chapter 2. we give a class of new algorithms for nonlinear programming problems with linear constrained by combining the gradient projection method with non - quasi - newton method which was given in paper [ 2 ]. it ' s global convergence and the superlinear convergence are proved under suitable conditions

    在第二章中我們將梯度投影與文[ 2 ]中的非擬牛頓法相結合,給出了求解線性約束非線性優化問題的一類梯度投影非擬牛頓演算法。
  18. In chapter 3, we give a class of new algorithms with inexact search for nonlinear programming problems with linear constrained by combining the generalized projection method with non - quasi - newton method. it ' s global convergence and the superlinear convergence are proved under suitable conditions

    新演算法推廣了文[ 1 , 2 ]中的結果。在第三章中我們將廣義投影演算法與非擬牛頓法相結合,給出了求解線性約束非線性優化問題的一類廣義投影非擬牛頓演算法。
  19. In this paper, we focus our attention on linear projection analysis and develop some new algorithms as regards it. and, these algorithms are verified to be effective in the application of face identification and handwritten character recognition

    該文就有關線性投影分析的理論與演算法進行了深入的研究,所提出的演算法在人臉識別和手寫體字元識別方面得到了較成功的應用。
  20. The principle and all of the formulas of grid projection were given, the experiment was done, and some practical scanned 3d images obtained by grid linear projection method were given as examples

    通過對全網格線性投影演算法原理和公式推導,可以發現全網格線性投影演算法不但具有更高精度和速度,而且具有更強的自適應性和魯棒性。
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