forward extraction 中文意思是什麼

forward extraction 解釋
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  • forward : adv 1 向前，前進 （opp backward）。2 【航海】在船頭，向船頭（opp aft）。3 今後，將來。4 出來，出...
  • extraction : n. 1. 抽出，拔出。2. 【化學】提取（法）；萃取（法）；回收物，提出物；精煉。3. 精選，摘要。4. 血統，家世，出身。5. 【數學】開方，求根。
  1. Increasingly complicated the need of the well drill and petroleum extraction busywork, the development direction of the drill and petroleum extraction tools is consummater capability, complexer configuration and high - effect working. the development of the drill and petroleum extraction tools bring forward higher request for research tester and experiment means at the same time

    為適應日益復雜的石油鉆采作業的需求，鉆采工具正向著性能完善、結構復雜、施工高效的方向發展，並對工具研製中的試驗裝置和試驗手段提出更高的要求。
  2. The characteristic of power quality signal ' s deal by wavelet multi - resolution decomposition and time - domain analysis is studied then brings forward combine the tow methods and uses it to filter bed yawp, decomposition and feature extraction. 8 kinds of power quality are classified and characterization of sag is specially classified

    然後研究了小波多解析度分解和時域分析電能質量信號處理的特點，提出了應用兩種方法相結合的方法，對電能質量信號進行去噪、分解，通過大量的計算機模擬工作，對擾動信號進行了特徵提取。
  3. A new fractal - based infrared image feature extraction method is presented and the detailed theoretic analysis and implement procedure of this algorithm is submitted and tested in some experiments. with the limitation of the line detection based on traditional hough transform that the information of the length and the end points of the line is unavailable, a new algorithm which makes use of the accessional strategy based on precognition information is put forward to meet the demand for more information of the line, simulation results show this method is effective. finally, the whole process of airport target recognition is presented and the result images are also given

    使用分形方法提取目標的特徵，在知識指導下，提出了一種基於目標特徵模型的降維的形態學分形維數計算方法，對傳統分形方法進行了改進，從理論上推證了演算法的合理性，並對演算法進行了模擬分析；針對傳統hough變換無法獲得線段端點和長度信息的局限性，提出了一種基於目標特徵先驗知識的hough變換融合策略，通過引入目標先驗知識，可以有效地獲得直線信息；對信息多而復雜的機場目標採用基於知識的目標識別方法，使用置信度模摘要型實現不確定推理，對目標進行識別判斷，將知識貫穿于整個識別過程中，對目標進行了有效地識別。
  4. The paper is mainly based on geography, ecology, sight ecology, region location theory and system theory. by interpreting the mss remote sensing image of 1970s and the tm remote sensing image of 1980s and the end of 1990s in keerqin sandlot based on background database and expert information, we have achieved the three periods vector data of land desertification of the research area, then we have disposed the data property by using the powerful spatial analysis function of arc / info and achieved the information extraction and analysis supported by arcview and erdas imagine. thus the rule of temporal and spatial variation of land desertification in keerqin sandlot is researched and the blueprint and countermeasures of the prevention and treatment of land desertification in keerqin sandlot are put forward

    本研究主要以地理學、生態學、景觀生態學、區位論和系統論為主要理論支持，通過對科爾沁地區20世紀70年代的mss遙感影像、 20世紀80年代和90年代末tm遙感影像進行基於背景數據庫和專家知識的解譯，獲得科爾沁研究區土地沙漠化的三期矢量數據，利用arc / info軟體強大的空間分析功能對屬性進行處理，並在arcview 、 erdasimagine軟體的支持下進行信息提取與分析，研究了科爾沁沙地土地沙漠化時空變化的規律，提出了科爾沁沙地土地沙漠化防治的構想與對策。
  5. The nutritive composition in sargassum from haitian had been determined. the extraction of seaweed polysaccharides by hot water was studied. and the application prospect of seaweed polysaccharides was put forward

    摘要測定了海南馬尾藻的營養成分，對熱水提取馬尾藻多精進行了研究，並展望了海藻多糖的應用前景。
  6. Abstract : the formation of traditional v extraction from coal stone isreviewed in hunan province. the paper described several currently applied new processes for v extraction from coal stone. suggestions are put forward for further development of v extraction from the coal stone

    文摘:回顧了湖南石煤提釩傳統工藝的形成過程，介紹了目前已在生產上應用的幾種石煤提釩新工藝，對促進石煤提釩的進一步發展提出了建議。
  7. The effect of overburden separation dynamic development under key stratum on grouting for bed separation space was analyzed, in order to deal with the problem that the current bed separation growing technology can not prevent the key stratum from breakage, put forward the isolated section - grouting technology for overburden bed separation space, integrated the virtue of growing for bed separation space and partial extraction, the bed separation grouting bodies, key stratum and isolated section pillars were made to constitute the load - carrying body all together, and to reach the purpose of reducing subsidence effectively, increase the coal seam extraction ratio, and accelerate the development of isolated section - growing technology for overburden bed separation space

    摘要分析了關鍵層下離層動態發育對離層充填的影響，針對目前離層區充填工藝不能阻止覆巖關鍵層初次破斷的問題，提出了「覆巖離層分區隔離注漿充填」技術，它綜合離層充填與條帶開采技術的優點，通過離層區充填置換或減小分區隔離煤柱寬度，使「離層區充填體關鍵層分區隔離煤柱」形成共同承載體，從而達到有效減緩地面沉降的目的，提高了煤層采出率，促進了覆巖離層充填減沉技術的發展。
  8. Put forward according to the topic of information of web extraction ( the focused extraction ) the system model, mainly mean to search those optionally with define the behavior that the topic gathers the related page to carry on extraction in advance

    提出基於主題的web信息提取系統模型，主要是指選擇性地搜尋那些與預先定義好的主題集相關的頁面進行提取的行為。
  9. In this thesis, we discuss the compression method of chinese font and put forward a method based on stroke extraction

    本文在對漢字字形的結構式壓縮進行了討論的基礎上提出了一種基於筆劃抽取的漢字字形結構式壓縮方法。
  10. Then the exisiting algorithms on iris location are studied and the disadvantages are pointed. a new approach based on edge detection, mathematic morphology and probability statistic is put forward. after studing the means of daugman ’ s encode of iris texture and w. w. boles ’ extraction the unique features by the zero - crossings of the wavelet transform, we adopted wavelet multi - resolution analysis that extract the feature

    在研究和分析了前人的虹膜定位演算法以及daugman對虹膜紋理的編碼方法、 w . w . boles的小波過零點分析提取虹膜特徵識別演算法的基礎上，研究了基於邊緣檢測和數學形態學以及概率統計等理論的一種新的虹膜定位方法;研究了虹膜圖像的歸一化和圖像增強;研究了基於db4小波的多分辯率分析的虹膜特徵提取演算法;研究了相關系數匹配識別。
  11. Researches the basis watermark managing works particularly and systemly. there are many works to do on watermak technology except watermark embedding and extraction arithmetics such as the watermark choosing, encoding, modulating, demodulating and the watermark capacity. these prior and ultimate works ensure that the arithmetic is brought into effect. just understanding these, this paper analyses and researches the basic watermark theoretics in many pages. it brings forward chaos modulation on watermark modulating, brings forward chaos permuting on image permuting, introduces bch encoding on letter watermark processing and discusses the approximate estimate of the watermark capacity in dct domain and dwt domain by applying the current communication theoretics. there works not only extend ways for the later work but also are significative on watermark research

    全面系統地研究了水印信號的處理技術數字水印技術除了水印嵌入和提取的演算法外，還有許多工作需要做，如水印的選碼、編碼、調制、解調、能量的確定等等，這些預處理和后處理工作是演算法有效實施的必要保證，正是基於這樣的認識，本文利用較大的篇幅對水印的基本理論知識進行了詳細的分析和研究，在水印的調制方面，提出了混沌調製法；在圖像水印的置亂方面，提出了混沌置亂法；在文字水印的處理上，引入了bch編碼；在水印容量分析方面，結合現代通信理論，對圖像在dct域和小波域內的水印容量估算進行了詳細的探討，這些工作不僅為本文後期工作鋪平了道路，而且對數字水印的研究具有重要的意義。
  12. It mainly includes following aspects : in this paper, firstly implication of wavelet analysis in signal harmonic component extraction is presented in detail, and on this foundation signal given frequency band component extraction method is proposed. then we investigate frequency aliasing phenomenon, reason why frequency aliasing phenomenon is easy happened when wavelet is implied in field of motor fault diagnosis, and frequency bands where frequency aliasing phenomenon is easer happened, and put forward approved morlet wavelet analysis method which can effectively alleviates frequency aliasing phenomenon. third we set up vibration signal detected system, design experiments to obtain three groups of fault signals : eccentricity fault, mixed fault of eccentricity plus mild rub, mixed fault of eccentricity plus moderate rub, and process these data using analysis method proposed in this paper

    首先對論文的選題以及相關背景進行了探討，並對相關的小波基礎理論進行了闡述，主要針對感應電動機的偏心故障和偏心+碰摩復合故障形式及相關的應用演算法進行了詳細探討，主要工作內容包括下面幾個方面:在論文中，首先對小波分析在信號的諧波分量提取中的應用進行了研究，在此基礎上，提出了信號的特定頻帶成分的提取方法;研究了小波分析的頻域混疊現象，探討了小波分析應用於電機故障診斷領域時易發生頻域混疊現象的原因，以及混疊現象較易發生的頻帶，提出了可以有效減輕頻域混疊現象的改進的morlet小波分析方法;搭建了振動信號檢測系統，設計實驗採集得到三組故障數據:偏心故障，偏心+輕微碰摩復合故障，偏心+中度碰摩復合故障，並對這些數據應用本文提出的分析方法進行信號處理，提取出的特徵參數可有效區分這兩種故障形式;研究了基於matlab和labview的混合編程方法，完成了電機故障檢測系統的軟體開發。
  13. Then the reconstruction of curved surface of the covering parts was taken for an example, and the emphasis is laid on the identification and extraction method of the characteristic and the boundary, and the reconstruction method of curved surface. meanwhile it was given emphasis to the partition strategy of the data of point cloud, the forward direction design of the process of re, and so on

    在此基礎上，以覆蓋件曲面重構為例，重點研究了點雲數據的分塊策略、曲面特徵的識別和提取方法、曲面邊界提取和曲面重構方式，以及反求過程中的正向設計等。
  14. Application background and significance of hydrogen chloride preparation from byproduct hydrochloric acid desorption are intruduced ; basic rationale and technology process for preparation of gas hydrogen chloride by conventional resolution, variable pressure rectification and extraction rectification from hydrochloric acid are reviewed ; various methods are compared, explaining the suitable conditions, suggestions are made on the production process, equipments and materials ; improvement suggestions are put forward on hydrogen chloride preparation by byproduct hydrochloric acid desorption

    摘要介紹了副產鹽酸解吸制取氯化氫技術的應用背景及意義；敘述了鹽酸常規解析、變壓精餾和萃取精餾制取氣態氯化氫的基本原理和工藝流程；對各種方法作了比較並說明了適用條件，對生產工藝、設備及材料的選擇提出了建議；提出了副產鹽酸解吸制取氯化氫應用的注意事項及改進建議。
  15. Put forward a kind of method that topic information extraction from template web pages. the main characteristics of that method is : 1 ) direct carry on extraction to the topic information, but do not need to pass the way of do away with the web page noise to extraction the topic information ; 2 ) to together output great deal of web page of template, after passing the generative template of the machine study, can extraction the web page topic information directly then, but do not need to carry on the analytical processing to each web pages. 3 ) with the news web page extraction analyzes that for the example method of concrete usage

    以新聞網站的過濾作為具體實例。提出了一種針對網際網路中大量存在的模板網頁主題信息進行快速提取的方法。該方法的主要特點為: 1 ）直接對主題信息進行提取，而不需要通過去除網頁噪音的方式來提取主題信息; 2 ）對同模板產生的大量網頁，通過機器學習生成模板后，便可直接提取網頁主題信息，而不需要對每一個網頁都進行分析處理; 3 ）以新聞網頁的提取為例分析該方法的具體使用。
  16. Another algorithm is put forward that be adaptability to frame excursion and luminance strengthen that has not considered in most algorithms. 3 video rearch is a basic demand for user, which belongs to later stage. this task needs analysing in earlier stage such as shot detection and character extraction which are not solved ideally at present, and this task is studied lesser

    3視頻段檢索是用戶的基本需求，屬于視頻檢索的後期工作，這一任務需要基於內容的前期分析，如鏡頭檢測和特徵提取等，而這些內容目前研究效果不甚理想，使得對于視頻段的檢索任務變得困難。
  17. According to the requirements to pd pattern auto - recognition, this paper studies systematically the basic theories and realizable methods for auto - recognition of pd gray intensity image : ( 1 ) in the requirement of on - line pd monitoring for transformer, several discharge models are designed and the relevant experiment methods projected. with discharge model tests, a lot of discharge sample data is acquired. on the base of systematical research on recognition for pd gray intensity image, this paper puts forward two kinds of fractal features, the 2nd generalized dimensions of original pd images and fractal dimensions of high gray intensity pd images, and then the relevant extraction methods

    針對局部放電模式自動識別的需要，作者系統地研究了局部放電灰度圖像自動識別中的基本理論和實現方法： （ 1 ）根據變壓器局部放電在線監測的要求，設計了放電模型和實驗方法，並通過模型實驗獲得了大量放電樣本數據，為構造局部放電灰度圖像和採用bpnn進行識別作好準備； （ 2 ）研究了局部放電灰度圖像的構造方法以及降維構造32 32灰度和矩陣的方法；在用人工神經網路對局部放電進行模式識別時，分析了bp網路的優缺點，對典型bp網路的結構和學習訓練演算法提出了改進，採用帶有偏差單元的遞歸神經網路作為模式分類器；採用32 32灰度和矩陣進行bpnn識別結果表明這種方法是有效的。
  18. Applied in license plate segmentation problem, a new segmentation method of automobile license plate based on wavelet transform and neural network is pointed out [ 71 ]. 2 ) phase of image feature extraction : combined with the feature extraction of structural and statistical method, a method of image character feature extraction based on wavelet and moments analysis is presented [ 74j. 3 ) phase of image classificaton [ 73 ] : after investigation on intelligence recognition technology, the paper puts forward basic structure of recognition machine ' s model, and makes a primary research of basic structure and design method, then makes research of the multi - character method

    並應用於車牌分割問題，提出基於小波與神經元模式識別的車牌圖像分割方法； 2 ）特徵提取階段：將結構特徵提取方法和統計特徵提取方法的緊密有機結合，提出一種基於小波和矩的車牌圖像字元特徵向量提取方法； 3 ）分類識別階段：對智能識別技術進行研究，提出智能識別機的模型結構，對識別機的基本層次結構和設計方法進行初探；並針對多特徵方法進行一定的研究；本文提出的基於模式識別的圖像處理方法對其他領域的圖像處理具有一定的參考價值。
  19. A new method is brought forward to solve this question. it goes directly from point clouds to a rp slice file. three problems, the preprocess of point clouds, the method of directly slicing the point clouds, the extraction and fit of contour data, are discussed

    為了克服上述方法的不足，提出了一種新的方法，即點雲數據的直接分層技術，主要包括數據預處理、點雲數據直接分層方法、輪廓追蹤與擬合三方面內容。
  20. An image corresponding method based on feature is put forward in the second chapter, because of using edge feature of image, the corresponding speed is improved. edge feature extraction is an important problem in the image correponding. traditional extraction method can not meet the requirement of image corresponding, a template based area weight marking edge detection method ( tbawsedm ) is put forward, on the basis of it, a fast point correspondence strategy is investigated. image corresponding is limited to edge scope, it can make the image correponding fast and improve the veracity

    圖像拼接的主要問題是確定相鄰圖像間的對應點，即圖像匹配，我們在第二章中提出了一種基於特徵的圖像對應方法，由於充分利用了圖像的邊緣特徵，大大提高了圖像的對應的速度;圖像對應中的邊緣特徵的提取是一個重要的問題，傳統的邊緣提取方法不能滿足圖像對應的需要，我們提出了一種基於模板的區域權值標記邊緣檢測方法（ templatebasedareaweightsigningedgedetectionmethod簡稱tbawsedm ） ，在此基礎之上研究了一種基於特徵的快速點對應策略，將對應點的確定范圍限定在邊緣的范圍內進行，加快了圖像對應的速度，提高了圖像點對應的準確性。
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