精確聚焦圖像 的英文怎麼說

中文拼音 [jīngquèjùjiāotúxiàng]
精確聚焦圖像 英文
sharply focused image
  • 精 : Ⅰ形容詞1 （經過提煉或挑選的） refined; picked; choice 2 （完美;最好） perfect; excellent 3 （細）...
  • 確 : 形容詞1. （符合事實; 真實） true; reliable; authentic 2. （堅固; 堅定） firm
  • 聚 : 動詞（聚集; 聚積） assemble; gather; get together
  • 焦 : Ⅰ形容詞1 （物體受熱失去水分 呈現黃黑色並發硬、發脆） burnt; scorched; charred 2 （著急） worried;...
  • 圖 : Ⅰ名詞1 （繪畫表現出的形象; 圖畫） picture; chart; drawing; map 2 （計劃） plan; scheme; attempt 3...
  • 像 : Ⅰ名詞1 （比照人物製成的形象） likeness （of sb ）; portrait; picture 2 [物理學] image Ⅱ動詞1 （在...
  • 精確 : accurate; exact; precise
  • 聚焦 : [物理學] （使光或電子束等聚集於一點） focus; focusing; concentrate
  1. On the basis of current investigation of both the domestic and foreign and current level of development, and contraposing difficulties and keys of autofocusing and measurement, this paper brings forward system of autofocus and measurement based on techniques of image processing of ccd. this system possesses merits of fast speed, high precision, small bulk and large dynamic range. it is able to carry out needs of fast, accurate, large range autofocusing and requests of noncontact and online measurement of workpiece face runout

    本論文根據目前國內外現狀和發展水平，針對自動聚焦和端面跳動測量的關鍵點和難點，在普通光學儀器的基礎上提出了一種基於ccd圖像處理技術的圖像式自動聚焦及其測量系統，該系統具有速度快、精度高、動態范圍大、體積小等優點，實現了快速、精確、大范圍的自動聚焦和對工件端面跳動進行非接觸、在線測量的要求。
  2. Thirdly, a modified extended chirp scaling ( ecs ) algorithm is presented, which solves the problem of producding fine focused images in the class of chirp scaling ( cs ) algorithm. lt can be used for uwb - sar imaging effectively. the phas e error produced by cs operation are analyzed. a windowed process in two dimension frequency domain before cs operation are proposed. it can improve the quality of image and widen the effectively swath and increase the peak to sidelobe ratio ( pslr )

    然後針對chirpscaling （ cs ）類演算法不能對參考點精確聚焦的問題，提出了一種改進的擴展cs （ ecs ）演算法，實現了對uwb - sar的高效成像；分析了cs操作產生的相位誤差，提出在cs操作之前在二維頻率域對信號加窗，除有效提高信號的峰值旁瓣比（ pslr ）外，還可以提高圖像質量，增加有效測繪帶寬度。
  3. Then its mathematical model is set up and its validity is proved by computer simulation results. in the following, a new processing method of using three - antenna to detect, locate and image moving target is proposed based on dpca and interferometric theory. this method can not only suppress ground clutter effectively and detect moving target but also locate accurately azimuth position of moving target and estimate its velocity

    深入分析了dpca和干涉的原理后，提出一種沿航跡放置的三天線sar動目標檢測和成像方法，詳細描述了該方法的工作機理，給出系統組成框圖，並給出該方法進行動目標檢測、定位、測速和成像的步驟，然後給出了計算機模擬方案及大量的模擬結果，充分證明了採用該方法不僅能夠有效的抑制地雜波、檢測動目標，還能夠對動目標精確定位，準確估計出動目標的速度，對動目標重新聚焦成像。
  4. This paper takes the sum of the square of gray difference as the criteria of evaluation function which image is or not focused and takes an effective searching way of autofocusing based on threshold value and curve fitting. this way enhances effectively speed and precision of autofocusing

    在自動聚焦過程中，本論文採用了圖像的灰度差分的平方和作為焦距評價函數，解決了自動聚焦過程中是否正確聚焦的判斷問題；提出了一種行之有效的基於閾值和曲線擬合的自動聚焦搜索方式，使聚焦速度和精度都得到了很大的提高。
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