餘弦條件 的英文怎麼說

中文拼音 [yúxiántiáojiàn]
餘弦條件 英文
cosine condition
  • 餘 : Ⅰ同「余」Ⅰ-Ⅳ1. Ⅱ名詞（姓氏） a surname
  • 條 : Ⅰ名詞1 （細長的樹枝） twig 2 （條子） slip; strip 3 （分項目的） item; article 4 （層次; 秩序; 條...
  • 件 : Ⅰ量詞（用於個體事物） piece; article; item Ⅱ名詞1. （指可以一一計算的事物） 2. （文件） letter; correspondence; paper; document
  • 條件 : 1. （客觀的因素） condition; term; factor 2. （提出的要求） requirement; prerequisite; qualification
  1. 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。
  2. Taking beam with rectangular section as an example, the corresponding analytical solution of beam subjected to cosine distribution pressure is given through constructing the stress function satisfying all boundary conditions and biharmonic equation, which is a base of beam subjected to arbitrary distribution pressure

    摘要以矩形截面簡支梁為例，通過構造一個滿足所有邊界條件和雙調和方程的應力函數，給出了梁受餘弦分佈力作用情況下相應的解析解，這為求解梁受任意分佈壓力作用下解的問題打下了基礎。
  3. This direction finding algorithm may resolve uncorrelated monochromatic sources, but it assumes that all signal frequencies are distinct. it requires no a priori knowledge of the signals " frequencies, suffers no frequency - doa ambiguity, and pairs automatically the x - axis direction cosines with the y - axis direction cosines

    該演算法用單矢量水聽器，在無需知道信號先驗信息的條件下，可以實現對多個不相關信號的方位角估計，並且不受頻率模糊度的影響，自動匹配x軸、 y軸的方向餘弦。
  4. This thesis is part of the project of national science foundation of china “ study on color video coding based on four - dimensional matrix ”. a multi - matrix theory model has been established in the project. and the color video is presented into a four dimensional matrix model and the four - dimensional discrete cosine transform ( 4d - mdct ) is applied to reduce the correlation between color components and adjacent pixels

    將多個彩色視頻幀構建在一個四維矩陣模型中進行運動補償預測、四維矩陣離散餘弦變換和矩陣量化，最後利用基於上下文的變長編碼方法進行壓縮，以全面去除彩色視頻各象素之間、各彩色分量之間以及連續幀之間的相關性，從而實現高信噪比條件下的高倍壓縮。
分享友人
分享到 Line

分享到臉書