域尺度變換 的英文怎麼說

中文拼音 [yùchǐdùbiànhuàn]
域尺度變換 英文
scaling in z domain z
  • 域 : 名詞（在一定疆界內的地方; 疆域） land within certain boundaries; territory; region
  • 尺 : 尺名詞[音樂] （中國民族音樂音階上的一級 樂譜上用做記音符號 參看「工尺」） a note of the scale in ...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  1. The plan of speckle noise reduction we proposed is use the garrote shrinkage function assisted by edge information of scale 2. we compare the speckle reduction results by conventional soft - valve, hard - valve and lee filter methods, and get very good conclusion

    我們提出的相干斑抑制方法是利用小波變換檢測圖像尺度為2的邊緣信息，再利用檢測出的邊緣信息利用garrote削減函數進行小波域的相干斑噪聲濾除。
  2. In the first part of the paper, the development of motor control system fault diagnosis theory is summarized. on the basis of the analysis of the characteristics of wavelet, the theory is discussed and the definition of the singularity is given. because of the localization property of wavelet transform, wavelet analysis can be used to detect the characteristics of the singularity from the signal and intermittence fault problems lying in the motor under test

    著重介紹了小波分析在電機控制系統故障診斷中的應用，根據小波理論在時域和頻域良好的局部化性質，討論了利用小波變換來檢測信號的奇異特徵的原理，給出了小波變換對信號奇異性特徵檢測的方法，針對實際應用，對小波基函數選取及小波分解尺度進行了探討。
  3. Wavelet transform, which has a multi - resolution analytic character, is a time - scale ( time - frequency ) analytic method of information. moreover, as both of its time - window and frequency - window can be changed it processes the ability of expressing local characters of information in time - frequency domain

    小波變換是一種信號的時間尺度（時間頻率）分析方法，它具有多解析度分析的特點，而且在時頻兩域都具有表徵信號局部特徵的能力，是一種窗口大小固定不變但其形狀可改變，時間窗和頻率窗都可以改變的時頻局部化分析方法。
  4. Two image watermarking methods embed watermarks into transform domain using the multi - scale characteristic of wavelet

    兩種圖像方法都是利用小波多尺度的特徵在變換域嵌入水印。
  5. By using ncep / ncar reanalysis data of height and wind, the inter - monthly lpac map, the climate lapc map, inter - annual anomaly map and mean variance map of monthly wind field of 850 and 500hpa and monthly height field of 850, 500, 150, 30hpa are calculated in a globe - belt area, which situates between 30 s and 75 n, from december 1957 to december 1997, according them we analysis the rule of the season transfer and anomaly of nh mean circulation. the results show that the climate map of lapc can describe the seasonal transfer process of large scale circulation better. the advance process of summer circulation establish is form south to north at the middle and lower level of the troposphere, that is reflected primly in the inter - monthly wind and pressure map of lapc ; at lower lever of stratosphere, the establish process is simulate to that of troposphere, and reflect of process of that the south asia high toward plateau ; at middle stratosphere the summer circulation establish begins at middle and high latitude initially, and then transmits to low latitude gradually, while the seasonal variability in mid - stratosphere is stronger than it in troposphere and low - stratosphere

    利用ncep ncar再分析高度場和風場資料，計算了30 s 75 n球帶區域1957年12月至1997年12月逐月850 、 500hpa風場及850 、 500 、 150 、 30hpa高度場月際局地型相似系數圖、多年平均圖（即氣候lpac圖） 、年際異常圖及均方差圖，在此基礎上，分析了北半球平均環流季節轉換及其異常的規律。分析表明，氣候局地型相似系數圖較好地給出了大尺度環流季節轉換發生的過程：在對流層中、下部，風、壓場月際局地型相似系數圖清楚地反映了夏季型環流建立由南向北的推進過程；低平流層夏季型環流的建立與對流層接近，其中，南亞高壓上高原過程有明顯反映：中平流層，夏季型環流的建立明顯表現為從中、高緯度開始，逐步向低緯傳播的特徵，且變化較對流層和低平流層明顯。
  6. The mutation, contrast and heterogeneity of ecological interface between oasis and desert ecosystem increased. rare natural or non - regional mosaic of patch show obvious sensitivity to spatial scale, the change ratios of theirs area and perimeter are greater than large patch

    同時通過測度敏感性檢驗，表明在尺度變換中，稀少的自然或隱域性斑塊鑲嵌體對空間尺度敏感性大，面積、周長等變化率大於大斑塊，隨尺度中度干擾則合併成較大的斑塊，隨尺度強烈干擾或隔離加強后最先消失。
  7. Results of processing many images of agricultural field and scene of navigation experiments prove that the method based on region segmentation can detect the road correctly, the multi - resolution r oad detection based on wavelet transformation can easily analyze the image on different scaling, and can possess the power to get main contours while suppressing small edges when the scale is large

    大量的農田實際環境和實驗場景圖像處理結果表明，區域的方法可以正確地檢測出導航路徑，基於小波變換的多解析度路徑檢測方法能夠方便地實現由粗及精地多尺度分析圖像，在大尺度時具有抑制細小的邊緣得到景物主要輪廓的能力。
  8. Due to the unique, stable and live physiological properties of the iris and non - invasive to users, most stable and reliable for identification in practical applications of iris - based system, iris recognition is receiving extensive attention and becoming an active topic in biometrics. as an application - oriented research project, iris recognition integrates mathematic, computer science, optics, electronics and physiology etc. based on wavelet transform, aimed to improve the recognition performance, centered at wavelet - based iris feature representation and pattern classification, we review and explore the iris sequence image quality assessment, iris image pre - processing, iris recognition performance evaluation and several other linked topics. we mainly investigate on the principles and application methodology of wavelet transform for iris feature representation and iris pattern classification methods

    以小波變換技術為基礎，結合圖像處理和模式識別方法，設計並開發了虹膜圖像採集裝置，建立了虹膜識別演算法測試實驗平臺;重點研究了虹膜識別中的小波變換的應用基礎理論與關鍵實現技術;提出了基於小波局部模極大值的虹膜特徵表示及其多重匹配識別、基於小波多尺度信息的一維和二維虹膜紋理特徵量化表示、基於小波過零點技術的虹膜特徵表示及其規范化的部分hausdorff距離匹配識別，這三類方法能夠有效地提取虹膜特徵;基於自建的演算法測試平臺，對上述三類方法和其他三種國內外比較有影響的基於小波變換的虹膜識別方法進行了定量的性能比較和評價，通過實驗數據分析得到了有意義的結論;最後指出了小波變換技術在虹膜識別領域的研究重點與發展方向。
  9. This paper presented m - band wavelet - based watershed image segmentation method for medical digital image. the method was based on a multiresolution application of a m - band wavelet and watershed transformation, followed by a wavelet coefficient based energy computation and region merging procedure. the results showed that the method was useful for the reduction of over - segmentation and can be applied to the segmentation of digital images

    本文針對醫學數字圖像數據量大和噪聲情況復雜的特點，結合多尺度分析理論，通過多小波圖像分解、能量計算、分水嶺變換和區域融合等步驟，克服了分水嶺變換嚴重的過分割問題，實現了有意義的區域分割。
  10. According to the seismic convolution model, a kind of matched filters in time - scale domain is designed for echo signal detection of ground penetrating radar ( gpr ) and implemented in this paper, which is applied to detect the location and amplitude of single reflection wavelet in receiving signal through continuous wavelet transform

    摘要根據地震褶積模型，設計並實現了應用於探地雷達回波信號檢測的時間尺度域匹配濾波器，利用小波變換的時間定位性和尺度伸縮性，檢測出雷達接收信號中單個反射子波的位置與強弱信息，利用已知的雷達發射子波模型還原回波信號，達到了濾除噪聲、最佳接收的目的。
  11. Wavelets transform has localized character and self - acclimated function. the particle images are processed directly in spatial domain for this peculiarity, two vision paths are simulated by wavelet multi - resolution decompositions of two - dimensional images, and matching calculations are carried through in each path. in this way, a fast matching model is founded

    小波變換的最大優點是多尺度分析，具有良好的局部化特徵和自適應功能，使得該演算法能夠直接在空域中處理粒子圖像，利用二維圖像的小波多尺度分解模擬兩個最主要的生物視覺通路，並對不同通路分別進行匹配計算，實現快速匹配。
  12. E xperiments show that the amended method is better than that in reference 12. as the same time the method can combine with the wavelet transformation to locate the characters. by multi - resolution analysis and pyramid decomposition, the edge components with different spatial resolutions and different directions can be acquired, among which, the detail components have the most distinguished texture features standing for the object region, then by further morphological operations, the useless information is greatly decreased and the last object text region is acquired

    分析了各個方向邊緣經小波變換后的特點，用具有良好時頻局部和變尺度特徵的小波分析方法提取出不同空間解析度，水平和垂直及對角線方向的邊緣子圖像，把滿足水平和垂直方向能量閾值區域進行合併，經過去噪后，用對角線方向能量閾值即高高頻能量作為判斷標準，確定是否是真正的字元區。
  13. Image fusion based on wavelet transform is presented. by decomposing the images and mask signals with wavelet transform, wavelet coefficients and approximation coefficients at different scales are obtained. with the corresponding coefficients of normalized - mask signals as weighting functions, coefficients are combined in different resolution levels to reduce the effect of the seam

    在基於小波變換的圖像融合中，將待融合圖像與mask信號採用小波分解，得到不同尺度下的小波系數與逼近系數，以歸一化mask信號的分解系數作為加權函數，在小波域的不同尺度融合對應系數，消除拼接縫的影響。
  14. According to the relationship between the local modulus maxima of wavelet coefficients and the local singularity, and the multiresolution analysis of wavelet transformation, the blocklines is flagged. then using the method of binary image processing and mathematical morphology to get the complete blocklines, and to construct the binary control mask. the control mask identifies valid and invalid discrete phase distribution, and remains the errors of phase unwrapping within the local confines successfully

    針對直接標記截斷線的困難，利用小波變換系數的模極大值與局部奇異性的關系，通過檢測多尺度小波變換系數模極大值的位置來標記截斷線的基本走向，進而採用二值數學形態學處理方法形成完整的截斷線，構成標記出極點與截斷線等易產生錯誤的區域的二元模板來，將位相展開的錯誤限制在局部范圍。
  15. This approach that is based on the assumption that rubbing produces features in a monitoring signal which result in very large wavelet coefficients at a certain level can detect the presence and occurrence of damage

    結構出現損傷時，在某一尺度時刻其小波變換系數將出現峰值，從而給出損傷指示，實現損傷時域的定位。
  16. This paper investigates construction of orthogonal multiwavelets and a condition for approximation order of m - band multiscaling functions in frequency domain, introduces m - band scale similarity transformation ( mst ). one can increase the approximation order of multiscaling function with help of mst

    本論文研究了正交多小波的構造， m帶多尺度函數的逼近階頻域條件，引入m帶尺度相似變換（ mst ）並利用其提高m帶多尺度函數的逼近階。
  17. Plentiful simulations are presents and discussed. in the third chapter, a modified radon - wigner transform algorithm with two - step searching and clean method is proposed, which is used in radar multi - target resolving and parameter estimation

    首先分析了基於radon - wigner變換的參數估計原理，提出了變尺度兩級搜索演算法，並應用頻域信號分離技術，對原radon - wigner變換改進，並進行了模擬。
  18. Because the fourier transform is widely applied in engineering and the polar coordinate systems has superiority in data " rotation and scaling, the improved dpft algorithm can also be implemented in many fields such as image registration, image retrieval and radar signal processing

    由付立葉變換在工程應用中的廣泛性和極坐標系在處理二維數據旋轉和尺度變換上的優越性，該演算法也可用於圖象配準、圖象檢索和雷達信號處理等應用領域。
  19. A time - frequency analysis method is presented to solve paper machine press section bearing vibration signals of unstable and complication, applying wavelet function to the unstable signals for faulty bearing according to paper machine press section roll bearing characteristic, and process the vibration signals by means of decomposition and reconstruction, obtaining the vibration signals in different frequency bands, the statistic in frequency domain of relevant frequency bands is served as monitoring feature

    摘要針對紙機壓榨部滾動軸承尺寸大響應弱、運轉速度低、低頻信號容易淹沒、調制源多、振動信號非平穩性等特點而導致常規的傅立葉分析診斷故障效果不佳的情況，提出了一種應用小波變換的時頻分析方法，對振動信號進行分解和重構處理，獲得了振動信號在不同的頻段的分量，提取相應特徵頻段重構分量的功率譜的頻域統計值作為特徵參數，從而實現對軸承故障診斷。
  20. Set about from method of image data compression, the paper introduces wavelet and wavelet transform firstly. wavelet transform is an analytical method of time - scalable, which has the characteristics of multi - resolution, is partly transformed in space and frequency, and can realize self - adaptation in image analysis, but must carry on the huge convolution operation, it is complex

    本文從圖像數據壓縮方法著手，介紹了小波和小波變換，小波變換是一種時間-尺度分析方法，它具有多分辨的特點，處理時進行的是空域和頻域的局部變換，可以用來實現對圖像的自適應分析，但需進行龐大的卷積運算，計算復雜。
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