點擴散函數 的英文怎麼說

中文拼音 [diǎnkuòsǎnhánshǔ]
點擴散函數 英文
point spread function
  • 點 : Ⅰ名詞1 （液體的小滴） drop （of liquid） 2 （細小的痕跡） spot; dot; speck 3 （漢字的筆畫「、」）...
  • 擴 : 動詞（擴大） expand; enlarge; extend
  • 散 : 散動詞1. （由聚集而分離） break up; disperse 2. （散布） distribute; disseminate; give out 3. （排除） dispel; let out
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  1. Maximum a posteriori restoration with markov constraint for three - dimensional optical - sectioning microscopy

    三維顯微圖像復原及點擴散函數的研究
  2. In this paper, some characteristics of flow movement and sediment transport are analyzed by using the flume experiment data. the cross section of compound channel can be divided into four regions : the undisturbed region in main channel, the interactive region between channel and plain, the undisturbed region in flood plain and the boundary region. in the undisturbed regions, the distribution of longitudinal velocity along the depth has the feature of lograithmic. whereas, in the interactive region, the longitudinal velocity does not obey the logarithmic distribution law, but it can expressed as a revised logarithmic function by using a wake function. on the basis of the kinematic equation the velocity distribution of transverse velocity is obtained. in the boundary region, the longitudinal velocity obeys the law of parabolic distribution. furthermore, according to the simplified diffusion equation, the transverse distribution of sediment concentration in the interactive region is deduced. the analysis is in good agreement with the measured data

    本文根據漫灘水流的運動特點，將漫灘水流的復式斷面分為主槽平衡區、灘槽交互區、灘地平衡區及邊壁區等4個區，並給出了各區寬度的經驗公式.根據灘槽交互區垂線流速分佈的變化特點，提出了附加尾流函數的對數流速分佈公式.在簡化水流運動方程和泥沙擴散方程的基礎上，對灘槽交互區內垂線平均流速及含沙量沿橫向分佈進行了理論分析，提出了反映灘槽水流動量交換強度的橫向渦量粘性系數及橫向擴散系數的表達式，得到了漫灘水流垂線平均流速及含沙量沿橫向分佈的解析解，並與實測資料吻合較好
  3. On the basis of increasing the flaw resolution of the x - ray radiographic system, the study is firstly concerned with the analysis made on the influence of such factors as redial sources energy, system noise, optics radiography and scattering on the radiographic system in theory, and the present dissertation looks at the methods for acquiring the radiographic system point sp read function, line spread function and module transfer function ( mtf ). on the basis of these studies, research the spread properties of the tiny flaw making use of mtf, acquiring the properties of system inspecting sensitivity and resolution, based on the system optimization designing

    本文以提高射線成像系統的疵病解析度為前提，首先在理論上對射線源能量、系統噪聲、光學成像、散射等各環節對成像系統的影響進行分析，探討成像系統的點擴展函數、線擴展函數及其調制傳遞函數（ moduletransferfunction ，簡稱mtf ）獲取方法，在此基礎上，利用mtf研究微小疵病的擴展特點，從而得到系統的檢測靈敏度和解析度給出關系特性，為系統優化設計提供依據。
  4. Point spread function in coded aperture imaging system

    編碼孔徑成像系統中的點擴散函數
  5. Point spread function

    點擴散函數
  6. Experimental results and simulations show that the fringe spacing of the psf is narrow down with the increasing of and l

    實驗和模擬結果表明，點擴散函數的條紋間距隨錐鏡夾角增大而變窄，隨點光源距透鏡距離的增大而變窄。
  7. Second, we can not identifies the psf of the blurred image, that is to say, we only have insufficient information of the blurred image

    其次，當我們不能確定系統的點擴散函數時，也就是說，對于模糊圖像，我們沒有充分的信息。
  8. In the method dfd ( depth from defocus ), feasibilities of restoring images from defocus images and estimating the focused position are discussed and confirmed

    離焦深度法估計離焦距離或者進行圖像恢復的依據是成像系統的點擴散函數及它所產生的模糊圓。
  9. Psf models were introduced into full digital autofocus, and theirs function module and evaluation module were implemented using image restoration

    點擴散函數模型分別被用於全數字對焦處理，並通過基於點擴散函數的圖像恢復，完成全數字對焦的功能模塊和評價模塊。
  10. The solution proposed here identifies important parameters with which to characterize the point spread function ( psf ) of the blur, given only the blurred image itself

    這里提出的方法是僅根據模糊圖像本身，求出確定系統點擴散函數（ psf ）的重要參數-模糊距離。
  11. Based on the theories of non - diffracting imaging system in coherent light, the measurement system of point spread function ( psf ) of non - diffracting imaging system has been presented

    摘要在分析相干光照明下無衍射成像系統理論的基礎上，設計了無衍射光成像系統的點擴散函數的測量系統。
  12. In the light of the weakness of the traditional method, this thesis improves the point spread function ( psf ) of the imaging system. meanwhile, this thesis adds line process as a priori to set up several convex constraint sets

    針對傳統凸集投影估計法的缺點，本文提出了改進的點擴散函數，同時利用圖像的先驗知識，提出了加入線過程作為凸約束。
  13. As we know, correct identification of the psf parameters permits fast high resolution restoration of the blurred image. using the method, we can quickly restore the blurred image on line, and when the noise of the image is bigger, it can perform very well to identifity the blurred distance

    當確切知道模糊系統的點擴散函數時，就可以快速有效地恢復模糊圖像，使用本文方法，可以滿足適時性圖像處理的需要，並且不需要事先知道相機的系統參數，在圖像噪聲較大的情況下，也可以很好的確定出來模糊距離。
  14. The purpose of this work is to improve the space resolving power of the temperature measurement system for small laser - processed region. the main conclusions and contributions are as follows : 1. after expatiating upon the principle of radiation thermometry, we mainly discuss the effects on the space resolving power and the measurement precision of the real - time temperature measurement system by some factors

    本文的工作就是圍繞輻射測溫系統空間分辨能力的提高技術展開的，主要的研究結果和創新之處如下: 1 .在闡述不接觸測溫原理的基礎上，討論了影響空間分辨能力及測溫準確性的兩種因素? ?強度點擴展函數有效分佈、進入系統中的雜散光。
  15. Abstract aiming at the defects of diffusion function with lower diffusing speed and needing multiple round iteration to resist differential attack in the image encryption algorithm based on chaotic block cipher, a new chaotic image encryption algorithm based on output ? cryptograph mixed feedback was proposed

    摘要針對現有基於混沌分組密碼的圖像加密演算法中，擴散函數擴散速度慢、需要多輪迭代才能抵抗差分攻擊的缺點，提出了一種新的基於密文和輸出混合反饋的混沌圖像加密演算法。
  16. The form of the psf has been deduced according to the fresnel diffraction, and it has been analyzed that the frings density of the psf depends on the axicon ' s refracting angle and the distance l between the point light source to lens l2

    利用菲涅耳衍射理論，推導出相干光照明下無衍射系統的點擴散函數（ psf ）的形式，並分析出點擴散函數的條紋疏密與錐鏡的夾角和點光源的位置有關。
  17. Wielding the dry pen will produce some special artistic effects with profuse expressive force, such as hollow - stroke in chinese calligraphy, and the technique of wielding dry pen represent the author ’ s strength and vigour, it is the essence of chinese calligraphy

    以迭代函數系統生成的吸引子作為水墨擴散的種子點，並建立多點擴散的相互影響公式，計算筆劃輪廓范圍內各點受擴散影響，而引起的灰度值的變化。
  18. The engineering algorithm ( physics optical method ) for numerical simulation of ao effect was also derived, the point - diffusion function obtained can be used to obtain sighting - axis deviation, blurring, jitter and strehl ratio, so that the ground simulation of ao effect can be theoretically feasible

    同時推導了氣動光學效應數值模擬的工程演算法（物理光學法） ，得出的點擴散函數便可得到氣動光學效應的視軸偏差、模糊、抖動、 strehi比等，從而使氣動光學的地面模擬測試研究在理論上可行。
  19. In order to measure the focal length of lens automatically, linear ccd is used as receiver on behalf of eyes on the basis of original experiment equipment measuring the focal length of lens. a kind of method determining the focal plane automatically is put forward and analysed theoretically in this text, based on the theory of point spread function

    本文基於點擴散函數理論，提出一自動檢焦方法，對該方法進行理論分析，並通過實驗驗證了該方案的可行性;確定焦面后，在處理測量數據過程中，文中對常用的幾種方法進行了比較和分析，最後採用質心法來實現對透鏡焦距的測量。
  20. The main works in this paper is that, by calculating points spread function ( psf ) and simulating the forming of images of monochromatic light and ideality geometrical optics on the computer, we have simulated successfully doe imaging process

    在計算機上通過模擬點擴散函數（ pointsspreadfunction簡稱psf ） 、理想幾何光學成像、單色光成像，成功地模擬了doe的成像過程。
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