spread function 中文意思是什麼

spread function 解釋
傳播函數
  • spread : vt （spread）1 伸開，伸長（手臂等），展開，張開（帆等），打開（地圖等）；鋪開（氈子等），展寬，展...
  • function : n 1 功能，官能，機能，作用。2 〈常 pl 〉職務，職責。3 慶祝儀式；（盛大的）集會，宴會。4 【數學】...
  1. By using knife edge as object, and cmos sensor as device for image analyzing, we get edge spread function from the image and use differential operation and fft to obtain modulation transfer function of the lens, then its image quality is known

    以刀口作為目標物，以cmos作為圖像分析器件，從圖像中獲取刀口函數，經微分和fft運算，得到成像鏡頭的mtf （調制傳遞函數） ，從而得知其成像品質。
  2. Abstract : a new method for determining proximity parameters, and in electron - beam lithography is introduced on the assumption that the point exposure spread function is composed of two gaussians. a single line is used as test pattern to determine proximity effect parameters and the normalization approach is adopted in experimental data transaction in order to eliminate the need of measuring exposure clearing dose of the resist. furthermore, the parameters acquired by this method are successfully used for proximity effect correction in electron - beam lithography on the same experimental conditions

    文摘:在電子散射能量沉積為雙高斯分佈的前提下，提出了一種提取電子束光刻中電子散射參數，和的新方法.該方法使用單線條作為測試圖形.為了避免測定光刻膠的顯影閾值，在實驗數據處理中使用歸一化方法.此外，用此方法提取的電子散射參數被成功地用於相同實驗條件下的電子束臨近效應校正
  3. Restoring turbulence - degraded images based on estimation of turbulence point spread function values

    基於估計點擴展函數值的湍流退化圖像復原
  4. Line spread function

    線擴散函數
  5. 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。
  6. Point spread function in coded aperture imaging system

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

    點擴散函數
  8. 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。
  9. 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。
  10. 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。
  11. It has been deduced that the search direction remains the same but that the step length decreases in optimizing the improved cost function with the conjugate gradient algorithm from the gradient of the cost function that the fir filter apporaches the contrary point spread function ( psf ) more, and that the estimated image is closer to the original one

    從代價函數的梯度入手推導出共軛梯度演算法，其搜索方向保持不變而搜索步長變小，使濾波系數更加退近於點擴展函數逆運算元，從而使估計圖像與原始圖像更加接近。
  12. Fluorescence power transfer function, three - dimensional point spread function ( 3d - psf ) and three - dimensional optical transfer function ( sd - otf ) for the various fluorescent wavelength of the two kinds of fluorescence confocal scanning microscopy are calculated in this paper by using fourier imaging theory. the results show that the fluorescent wavelength has influence on imaging property of confocal microscopy such as spatial cut - off frequency, resolution and 3d - otf. there is a different missing - cone in the 3 - d space of otf when the ratio of excitation wavelength to fluorescent wavelength decreases

    本文在sheppard和gumin等人的理論基礎上，利用fourier光學成像理論，討論了不同熒光波長對單光子和雙光子共焦顯微鏡成像特性的影響，導出了單光子和雙光子共焦顯微鏡的熒光功率傳輸函數、三維脈沖響應函數和三維光學傳遞函數，得到了它們在不同激發波長與熒光波長比值時具體的表達式，並且通過數值計算，得到了它們的曲線圖，結果表明：隨著激發波長與熒光波長比值的增加，焦斑的橫向分佈和縱向分佈變窄，橫向解析度和縱向解析度提高，系統的成像效果變好，當激發波長與熒光波長的比值下降到一定程度時，可以看到不同程度的失錐現象。
  13. On the other hand, in image domain, spatially varying point - spread function ( svpsf ) is defined to demonstrate how the effects of complex scattering centers which cause scattering model mismatch can be interpreted as being due to a svpsf acting on a ideal scatterer

    同時在圖像域引入二維空變點展布函數（ svpdf ）來解析表達非點散射機制對理想「點」的展布作用。
  14. Some different specific arithmetic were presented in recent 20 yrs. but all these arithmetic are applicable to point spread function which the parameters are known

    目前，對于不同原因造成的圖像變質的復原有了深入的研究，到現在已經提出了不同的具體演算法，但這些方法適用於點擴展函數並已知其參數的情況。
  15. When the bar code is of higher density, adjacent edges interact each other due to the influence of the point spread function of image collection system, therefore, this kind of method becomes invalid

    當條碼密度較大時，受光學系統點擴展函數的影響，邊緣相互干擾，這種技術不再適用。本文研究了高密度二維條碼的識別技術。
  16. Experiments show that the algorithm presented in this paper is able to effectively overcome bluring affects caused by the point spread function and apparently promote the recognition rate, and the algorithm is better than that based on edge detection

    實驗結果表明，這里提出的演算法能有效克服光學系統的降晰對條碼識別的影響，顯著提高了識別率，其性能優于基於邊緣檢測的演算法。
  17. This paper analyses deterioration model of bar code signals after the point spread function convolution, and presents two kinds of recognition algorithm in correspondence to different bluring degrees of bar code signal : one based on midpoints detection and the other based on waveform analysis

    分析了條碼信號經過點擴展函數卷積后的降質模型。針對條碼信號模糊程度的不同，提出兩種識別方法：基於中點檢測的條碼識別方法和基於波形分析的條碼識別方法。
  18. The theoretical results showed that point spread function ’ s distribution and the stray light mainly influenced the space resolving power and the measurement precision of the temperature measurement system, so we supposed some methods, which can improve the space resolving power, and the results proved the space resolution improved from 37 m to 16 m. 2. having made the space resolution come to 16 m, in order to improve the space resolving power more, we used image reconstruction method to reconstruct the

    利用這兩種方法，可以將測得的溫度場分佈中被點擴展函數卷積鈍化掉的部分復原回來，實驗測得微小面元溫度分佈在復原后溫度最高值高於復原前最高值，且分佈曲線變窄，較好地提高了系統的空間分辨能力，最終得到真實溫度分佈的最佳估計。
  19. Based on maximum entropy algorithm, analyzing the blurring mechanism with the aberration of point spread function of imaging system, an effective restoration algorithm for blurred image with mist is proposed in this paper

    文章基於最大熵演算法，分析了成像系統點擴展函數畸變導致圖像模糊的機理，提出了一種有效的薄霧模糊圖像的恢復演算法。
  20. The system is on the basis of fourier optics. by using knife edge as object, cmos sensor as device for image reception, we get edge spread function from the image histogram and use differential operation and fft to achieve mtf of the lens, then its image quality is obtained

    本系統以傅立葉光學為依據，以刀口為目標物，以cmos為圖像接收器件，採用獨特的演算法，從刀口圖像的灰度直方圖中獲得其刀口邊緣函數，經微分和fft運算，得到待測鏡頭的mtf ，從而得知其成像品質。
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