插值形狀 的英文怎麼說
中文拼音 [chāzhíxíngzhuàng]
插值形狀
英文
interpolate shape-
A wavelet - based interpolation of medical images
一種新的基於形狀的灰度圖像插值方法When the energy distribution are represented by arbitrary tabulated function ( lf = 1 ), some approximate descriptions ( e. g. simple triangular shape or rectangular shape ) of the energy distribution are applied near the threshold for some nuclides
一般近似的能譜形狀有三角形分佈(即用三個出射能點且線?線插值描述)和矩形分佈(即用兩個出射能點且矩形插值描述) 。In this thesis, some key issues of the vr technique are systematically investigated. firstly, for the image filters and image interpolation between slices, a integrated interpolation algorithm is presented based on the contour shape and correspondence matching, which keeps the shapes and grays information the objects of interest. secondly, the fidelity of effect of the vr for medical images is studied, and a continuous - gradient - based method for transparent volume rendering is proposed, which vivifies the results of volume rendering
首先,研究了醫學斷層圖像數據的濾波及層間插值技術,提出了一種基於輪廓形變和對應點匹配相結合的混合插值演算法,在實現圖像層間插值的同時保持了目標的輪廓形狀與灰度信息;其次,對醫學影像容積重建效果的逼真度進行了研究,提出了一種基於連續梯度轉換函數的互動式透明體繪制方法,使重建效果更加生動、真實。Presents a new method of constructing boundary conditions for nurbs interpolotion, which makes it unnecessary to know the deriratives of curve ends, and solves the problem of zero curvature at curve ends, and enables designers to control the shape of the two end segments of curve easily and freely by simply adjusting the curvature coefficients and discusses the influences of curvature coeffients on the shape of the end segments of curve
提出一種新的用於nurbs曲線插值的構造邊界條件的方法.該方法不需要已知曲線端點的切矢,並且解決了端點曲率為零的問題;它使得設計者可以通過簡單地調整首末端點曲率參數便可以隨意地且很容易地控制曲線首末兩段曲線的形狀.最後還討論了曲率參數的取值對曲線端部形狀的影響The high similarity in shapes and large overlapping areas of corresponded contours on adjacent cross - sectional are main conditions in reconstructing surface correctly. in accordance with the disadvantage of blurring caused by traditional gray - level interpolation methods, this dissertation introduces a method to interpolate 3d images based on point matching approach to get 3d isotropy volume data. with respect to non - similar shapes or no superposition of corresponded contours on adjacent slices and concave contours, this dissertation presents a method for shape - based interpolation based on nonuniform scale bounding box
相鄰斷層上對應輪廓區域的形狀相似和重疊部分大是保證重建表面正確性的重要條件,針對傳統灰度插值容易引起模糊邊界的缺點,本文採用基於對應點匹配的方法進行灰度插值,以獲得各向同性的三維數據;針對相鄰斷層間對應輪廓的形狀不相似,位置不重合和有凹輪廓線的情況,提出一種基於包圍盒非均勻比例放縮的形狀插值方法。In this dissertation, the radiation problems of wire antenna mounted on the arbitrary shaped conducting platform and the scattering problems of arbitrary shaped conducting objects are analyzed using impedance matrix interpolation with the moment method
本文應用矩量法結合阻抗矩陣插值技術,快速有效地求解實際工程問題中常見的任意形狀金屬目標的電磁散射問題及金屬載體上線天線的電磁輻射問題。So as to deal with this problem, local b - spline surface designing method with complicated trimmed boundary constraints is advanced. for two neighboring surfaces, we first trim a belt along the common boundary and then bridge a b - spline surface between these two trimmed surfaces with a smooth blending. with respect to the comer area comprised of several adjoining surfaces, a rectangular region covering the comer area is obtained by trimming operations at first, and later a local b - spline for filling the rectangular region is completed through interpolation or approximation
在兩張相鄰的曲面之間,先在其公共邊界處裁剪出一個帶狀區域,然後再採用曲面搭接的方式實現曲面之間的光滑過渡;而在鄰接曲面的公共角點處,先在該角點附近區域裁剪出一個矩形拓撲域,然後運用插值或逼近的方法,設計出一張既滿足於該區域的邊界條件同時又插值或逼近內部采樣點的b樣條曲面。That of available potassium showed the interruption of human activities with the highest value ( 81. 2 % ), and of cec, total potassium, available copper showed that spatial auto - correlation was master with the value less than 25 %. there was no relationship between spatial variability and distance, but with the nugget of 0. 2, therefore, the distance
Kropng插值結果進一步表明土壤表層養分含量具有高度的空間異質性,決定了空間格局的存在,養分含量的斑塊( patch )的大小、形狀及空間分佈等具有顯著的差異,但是不論在什麼方向,養分含量由低到高的分佈梯度規律總是存在的。Based on the tool of distance transformation, we deeply discuss the distance transformation and the generation of skeleton and apply them to the shape interpolation, where skeleton works as a bridge among them. meanwhile, the technology of morphing between object shapes is applied to the interpolation among image slice with different sampling resolution in different direction so that the three dimension reconstruction of medical image can performed successfully
論文以距離變換為工具,骨架為主線,深入探討了距離變換和骨架的生成問題,並將它們運用到形狀插值上,即不同對象問的變形;同時使用形狀變形方法應用於在不同方向具有不同空間解析度的圖像切片插值,以便於順利進行醫學圖像的三維重建,並對之進行了一定程度的研究。Computer animation, philadelphia, usa, 1998, pp. 64 - 71. 16 tong - yee lee, po - hua huang. fast and intuitive metamorphosis of 3d polyhedral models using smcc mesh merging scheme
本文主要的貢獻是將力學中對物體形狀變化的描述工具應變場引入了計算機動畫的研究中,並由此提出了使用應變場插值的三維圖形漸變方法。Extending the cubic a - b - spline interpolation curves with the blending function of degree 4 ( 3 - b ), we get the interpolation curves of degree 4. the curves have not only kept the structures and properties of the cubic a - b - spline interpolation curves but also increased a shape control parameter, which expands the adjusting ranges of the curves and make the curves easier to be controlled
利用三b四次調配函數對三次- b樣條插值曲線進行了擴展,擴展后得到的四次插值曲線在保留了三次- b樣條插值曲線的結構和性質的同時,增加了一個形狀調節參數,從而擴大了參數對曲線的調節范圍,使曲線更易於控制。Slice - imagings interpolation can creat new slices. this dissertation presents a gray - level matching interpolation method based on object gray - level distribution probability knowlege, through which we can get more clear scene at the boundary between different matters than that in traditional interpolation methods. with respect to non - similar shapes or no superposition of corresponded contours on adjacent slices and concave contours, this dissertation introduces a method based on variant shape - based interpolation
提出了一種基於對象灰度概率知識引導的對應點匹配的灰度插值演算法,解決了傳統灰度插值的不同種對象物質交界處的模糊問題;對于只關心物體邊界和重構目標形態信息的情況,介紹了當相鄰斷層上的對應輪廓線的形狀不相似,位置差異大時,利用改進的輪廓加權平均演算法進行輪廓形變插值的方法。In this paper a novel framework is presented for 2 - d shape interpolation using the intrinsic shape parameters of a piecewise linear curve based on skeleton
本文基於骨架概念,根據多邊形內在量插值思想給出一個新穎的二維形狀插值演算法框架。Using position vector fields, the strain field relating source and target shapes can be obtained. by interpolating this strain field between zero and a final desired value we can obtain the position field for intermediate shapes. this method ensures that the 3d morphing process is smooth
演算法具體步驟如下:首先通過原始形狀和目標形狀的位置場,計算出原始形狀和目標形狀間的應變場然後對原始形狀和目標形狀間的應變場進行插值,得到中間形狀的應變場最後由中間插值應變場反推得到中間形狀。Inverse distance weighted ( idw ) method is sensitive to the distance and circle distributions are found around sampling point. idw is an accurate interpolation method in case of the field information diffused from some center points
距離反比法插值對距離比較敏感,出現很多以采樣點為中心的圓形分佈,在以點為中心呈擴散狀分佈的農田信息,採用距離反比法具有較好的插值效果。As a result, the curves of c3 and c4 continuity can be generated, and the shape of the curves can be adjusted by the parameters x. the quadratic non - uniform b - spline curves are further extended and the continuity of curves is improved in this paper ; with a local shape parameter in each piecewise curve, the shape of the curves can be controlled effectively ; moreover, cusps of curves can be generated conveniently on the curves while using multiple knots
對二次非均勻b樣條作了進一步擴展,提高了曲線的連續性;曲線的每一段上都有一個局部控制參數,利用它們可以更有效的控制曲線的形狀;同時,利用曲線的重節點可以很方便的在曲線上構造尖點。作為b樣條擴展曲線的應用,作者將上面構造的各次調配函數應用到三次- b樣條插值曲線上,得到下述結果。Matching interpolation of 3 - d images based on shape
基於形狀的三維圖像匹配插值方法分享友人