defocus 中文意思是什麼

defocus 解釋
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  1. Influence of multipole deflection field on electron beam defocus

    多極偏轉場對電子束散焦的影響分析
  2. Second, it introduces an additive phase component which induces defocus in cross - range

    二是引入了附加的相位分量，在方位向造成散焦。
  3. 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。
  4. According to the discussing results, it can be seen that defocus measurement method with one - way defocused detector is really an effective method for defocus monitoring

    研究結果表明，單向離焦差動檢測方法是一種有效的離焦監測技術途徑。
  5. Laser direct writing system is the key equipment for fabrication of optical diffractive elements, and the defocus detection technique is the important sub - tech in it

    激光直寫機是製作衍射光學元件的關鍵設備，離焦檢測技術是其中的重要單元技術之一。
  6. Methods of psf and noise variance estimation are proposed for practical restoration and thanks to them a real defocus image is perfectly restored

    在此基礎上，對一個實際的模糊圖像進行了恢復處理並取得了良好的效果。
  7. We simulate the practicality system to experimentalize, obtain the relation between defocus and focus error signal, make it a condition that na = 0. 625 and n = 1. 7979

    並模擬實際系統，實驗得出當臨界角棱鏡的折射率n = 1 . 7979 、物鏡的數值孔徑na = 0 . 625時，離焦量與離焦誤差信號的關系曲線。
  8. Firstly, the influence of reaction time between laser and material on the roughness is studied by changing the speed of laser beam. secondaly, the optimized parameters are found by adjusting laser power and defocus

    一方面，通過改變激光加工頭的運動速度，考察激光與晶元材料的相互作用時間對側壁表面粗糙度的影響;另一方面，調整激光的功率和離焦量，找出最優化參數。
  9. The experiment results show that there are optimal defocus distance and exposure for the given system and recording material, and to obtain the best snr different reference - to - object beam ratios are also needed for black - white digital images of different space frequencies

    實驗結果表明，對于給定的系統及記錄介質存在一定的最佳離焦量和曝光量，而對于不同空間頻率的黑白二值條紋圖像還需要採用不同參?物光比以最終獲得最佳的信噪比。
  10. Firstly, in order to meet the requirement in application, the influencing factors for defocus measurement with one - way defocused detector are analyzed and the influencing regularity of detector position are discussed, after that the relationship between defocus errors and output signals is given too. according to the optimization results, the experimental device is established for this paper

    首先，本文從工程應用角度出發，通過分析單向離焦檢測的誤差影響因素，討論了探測器位置誤差對測量的影響規律，給出了離焦量與測量信號的輸出關系，優化設計了檢測光學系統，搭建了實驗裝置。
  11. The aim of defocus detection is to achieve high etching quality by providing the defocus error signal for focus - servo system which can make the etching spot focus accurately

    離焦檢測的任務是為聚焦伺服系統提供聚焦誤差信號，使寫入光斑能夠精確聚焦，從而保證刻蝕質量。
  12. We acquired best restoration of defocus images using one blurred image, and estimated the focused position according to radius of blurred circles at two different lens positions, the focus error was less than 5 %

    利用單幅圖像，用圖像恢復的手段得到了準焦位置圖像的最佳恢復；利用在兩個位置所得圖像，用模糊圓半徑估計出準確對焦位置，對焦誤差小於5 。
  13. The thesis is divide ^ into several chapters. ( 1 ) : firstly, the paper briefs the principles and research status quo of auto - focus in digital imaging systems, introduces a dfd ( depth form defocus ) auto - focus method based on frequency analysis

    本文包含了以下一些內容： （ 1 ） ：首先對成像原理進行了簡要的介紹和說明，接著分析了自動對焦技術的原理和作用背景，引入一種基於頻域分析的離焦深度自動對焦方法。
  14. In this paper, the differential astigmatic detection method for defocus measurement with one - way defocused detector is developed from the conventional differential astigmatic detection

    本文在傳統差動像散檢測方法基礎上，給出一種基於單向離焦的差動像散檢測方法。
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