閾對比 的英文怎麼說
中文拼音 [yùduìbǐ]
閾對比
英文
threshold contrast-
The comparison between tendency - oriented perimetry and traditional threshold perimetry
趨勢導向視野檢查法與常規閾值視野檢查法的對比研究Comparitive study of the threshold variability between blue - on - yellow perimetry and white - on - white perimetry
白視野檢查法閾值變異的對比研究Calculating the contrast and threshold sensitivity of a positive photoresist
計算正性光致抗蝕劑的對比度和閾限靈敏度On the basis of image segmentation, this thesis mainly discusses the algorithm of automatic target tracking in sequence images on the sea. firstly, in terms of the characteristics of image on the sea, such as weak contrast between target and background, borderline between sky and sea, spoondrift and so on, a method called barycenter tracking which is based on intra - frame information from the sequence images is proposed, in which the threshold method is the key algorithm
在圖象分割演算法研究的基礎上，本文重點從兩方面討論了海上序列圖象中運動目標的自動跟蹤演算法:首先，針對海上圖象的特點，即背景與目標間的弱對比度、存在海天線、魚鱗光和目標拖尾等，設計了以閾值分割為核心的基於幀內信息的形心跟蹤方法。The opposite results were observed for excitatory and inhibitory ftcs of corticofugally facilitated icc neurons. corticofugal inhibition increased sharpness, minimum threshold, and decreased the frequency - intensity response area of eftcs, at the same time it decreased the sharpness, minimum threshold but increased the frequency - intensity response area of iftcs
結果表明，聲源方位對下丘聽神經元頻率調諧曲線的銳度、最低閾值有影響，多數神經元在記錄部位同側的頻率調諧曲線的銳度比對側大，最低閾值比對側高。In this paper, the contrast of original image is enhanced by nonlinear transformation based on the characteristics of grain image ; after comparing several methods of threshold segmentation and analyzing their performance and applicability on grain image, the adaptive threshold segmentation based on gradient image is presented ; the noise of binary image is reduced with morphological filter, the hollow in binary image is filled in and a recognition algorithm is designed to remove agglomerate particle ; on the basis of mathematical morphology two methods are adopted to segment agglomerate grains that are not agglomerated tightly ; the parameters of size and shape, perimeter, area, diameter, complexlity, longest feret diameter, shortest feret diameter etc, are extracted. this technique is applied in measurement of pearl powder ' s particle size
本文根據粒度圖像的特點，採用非線性對比度增強處理改善顆粒顯微圖像的對比度；對多種閾值分割方法進行比較，分析了它們的性能和用於粒度圖像的適用性，在此基礎上提出了一種基於梯度圖像的動態閾值分割方法；對獲取的顆粒二值圖像進行形態濾波和空洞填充，設計了識別演算法去除凝聚體；對重疊不太嚴重的粘結顆粒採用了兩種基於數學形態學的分割演算法；提取了周長、面積、粒徑、復雜度、最長feret徑、最短feret徑等大小和形狀特徵參數，對珍珠粉等粉體粒度進行了測量。Based on the hydrodynamic energy transport model, the influence of variation of negative junction depth caused by concave depth on the characteristics of deep - sub - micron pmosfet has been studied. the results are explained by the interior physical mechanism and compared with that caused by the source / drain depth. research results indicate that with the increase of negative junction depth ( due to the increase of groove depth ), the threshold voltage increases, the sub - threshold characteristics and the drain current driving capability degrade, and the hot carrier immunity becomes better in deep - sub - micron pmosfet. the short - channel - effect suppression and hot - carrier - effect immunity are better, while the degradation of drain current driving ability is smaller than those with the increase of depth of negative junction caused by source / drain junction shallow. so the variation of concave depth is of great advantage to improve the characteristics of grooved - gate mosfet
基於能量輸運模型對由凹槽深度改變引起的負結深的變化對深亞微米槽柵pmosfet性能的影響進行了分析，對所得結果從器件內部物理機制上進行了討論，最後與由漏源結深變化導致的負結深的改變對器件特性的影響進行了對比.研究結果表明隨著負結深（凹槽深度）的增大，槽柵器件的閾值電壓升高，亞閾斜率退化，漏極驅動能力減弱，器件短溝道效應的抑制更為有效，抗熱載流子性能的提高較大，且器件的漏極驅動能力的退化要比改變結深小.因此，改變槽深加大負結深更有利於器件性能的提高Secondly, other parameters such as temperature difference and emissivity of target and sky, molecular absorptive transmittance, instantaneous field of view ( ifov ), contrast threshold and radiant wavelength are discussed in detail
然後，對目標天空背景溫差、發射率，氣溶膠衰減系數，瞬時視場、對比度探測閾值以及輻射波長等參數作了詳細討論。And a design example is given to prove the efficiency of this method. the fifth part is a research of application of filter banks in the image denoising. a new denoising method with optimized threshold is introduced, whose efficiency has been certified by some comparing examples
第五部分，我們研究了子帶濾波器組在圖像消噪中的應用，並且在完全重構格型濾波器組的基礎上，提出了一種利用優化閾值進行圖像消噪的新方法，對比實驗的結果表明該方法可以得到良好的消噪效果。The schemes to avoid the subliminal channels are summarized and compared with each other. a conclusion is drawn that the subliminal channel introduced by the semantic randomness of the input harmless message of cryptosystem can not be completely avoided. a new scheme to generate elgamal - type signatures that are free of any subliminal channels introduced by its session key is designed
總結了封閉閾下通道的若干方法並對各方案優缺點進行了對比分析，給出了作為系統輸入的無害消息的語義隨機性不可能完全封閉的結論，設計了新的對elgamal類簽名中會話密鑰進行完全封閉的方案，討論了現有封閉方案的實用性。By contrast, a algorithm called image segmentation based on edge detection is used to make the initial binary segmentation
在二值化初級分割中，對比了幾種分割方法，選擇基於邊緣強度的閾值選擇方法。3. pointing out it ' s not practical to decide the authenticity of picture only by the comparison result of the relationship coefficient, which is between target watermarking and the one being detected, and the threshold. presenting an improved method which demand the two to be identical
指出使用目標水印和待檢測水印的相關系數與閾值比較大小來決定圖像的方法並不實用，與之相對，提出了根據二者是否完全相同來作為判斷圖像是否真實的依據，並針對不同的場合設計了具體實現的方案。The three primary color channels of color image are separately captured to the image acquisition board by using special hardware and software technology, therefore, three lines of seeds are parallel captured. contrastive test is done to compare advantage and disadvantage of threshold chosen method, which can either be chosen from trying or iteration, and predefined threshold chosen is selected, which result in lessen processing time. region labeling using sequential algorithm and seed object recognition are studied, and then the center of a region is calculated
包括：為了有效地去除大量冗餘圖像信息，減少計算機存儲量，而採用的逐場採集和隔幀存方法；為實現三行播種通道種子信息的并行採集，圖像三分量獨立採集的軟硬體技術方法；對比實驗了自定義閾值選取與基於迭代方式的最優閾值的優缺點，選用了自定義閾值進行圖像分割，縮短了圖像處理時間：研究了基於序貫演算法的種子區域標記技術與種子目標識別技術，並進行了質心參數計算。Second, introduce the dyadic wavelet analysis, and use it realized the signal monitor and analysis to the turbine compressor, obtained the detail signal and approach signal at different frequency parts of the compressor s original signal. one type of electromotor that made in china is choose, and it s noise is tested. the noise signal is analyzed by wavelet analysis and spectrum analysis. several high spectral peaks that make people hearing disameniry are found. by contrast with theory calculating results and farther analysis. the cause that producing these spectral peaks is located
其次，介紹了二進小波分析，並應用二進小波分析實現了對透平壓縮機信號的監測分析，得到了壓縮機原始信號在不同頻率段分解的細節信號和逼近信號。用小波分析和譜分析相結合的方法對某國產電機的噪聲進行了分析，找出了人的聽閾不閱的幾個高譜峰位置，進行了空氣動力噪聲計算，通過與理論計算結果進行對比分析，進一步找出了產生該頻閩譜峰的幾個原因，第三，介紹了諧波小波和分形的基本原理。Secondly, rules to set indicators - system and the indicators - system are built according to the characteristics of highway and bridge project post - evaluation. an grey comprehensive cluster post - evaluation algorithm is built with the help of grey cluster evaluation, methodology of with and without comparison, ahp etc. dates of evaluating objects are computed through contrasts value and threshold value. the steps of grey comprehensive cluster post - evaluation algorithm are given
其次，根據路橋投資項目后評價的特徵，指出路橋投項目綜合后評價指標體系設置原則，並設立綜合后評價指標體系;結合灰色聚類評估方法、對比法、層次分析法、專家調查法等建立灰色綜合聚類后評價模型的演算法，通過建立的對比值、前後變化閾值實現對指標數據的獲取，進而提出了論文所建立的灰色綜合聚類后評價模型的演算法和步驟。The applicability of several commonly used de - noising methods is examined in signal analysis of instant vibration testing for soil compactness. the analysis result indicates that the method based on wavelet thresholds is the best. the method for determination the threshold of wavelet de - noising is also proposed to satisfy soil compactness test signal
對比了幾種常用信號降噪方法在土密實度瞬態振動測試信號中的適用性，得到了小波閾值降噪法最適用於土密實度瞬態錘擊測試信號的結論，並給出了適用於土密實度測試信號降噪的小濾閾值確定方法。During image recognition, it reduces the yawp and improves the quality of the image with the technology of the median filter, it uses the method of maximum between - class variance to segment the object, then gets better effect. the algorithm is simple, and the adapted capacity is great. it doesn ’ t influence by the change between the contrast and lighteness of the image. so it applies on the real time system
在圖像識別過程中，本文運用了中值濾波技術降低了噪聲，提高了圖像的質量，並採用了最大類間閾值分割法分割目標，得到了較好的效果，該方法計算簡單，自適應性強，在一定條件下不受圖像對比度與亮度變化的影響，因而在一些實時圖像處理系統中得到了廣泛的應用。In the pre - processing phase, each character is fed into a pre - processor, this makes feature extraction and recognition easy. in the first - grade classification phase, the dissertation puts forward border - table subtract of maximum and minimum feature left - border - table intermission feature improving width feature crossing amount average feature, these features combines with some existing features, realizes the ability of classification in the first - grade classification phase better
在第一級分類階段，本文提出了邊沿表極值差特徵、左邊沿表間斷特徵、改進的寬度特徵、針對所區分的字元在不同局部范圍取交截特徵的平均值與閾值比較等特徵，這些特徵與已有的一些特徵相結合，較好的實現了在第一級分類階段對字元的分類能力。A novel method for multi - scale denoising based on wavelet transform is given in chapter 2. the new method improves the threshold - processing algorithm and present the form of white noise standard deviation at each scale. simulations show that while getting rid of noise mostly, this algorithm keeps the main edges of signal well
該演算法對常規閾值方法進行了改進，給出了各尺度上噪聲方差的計算公式，對多個非平穩信號消噪問題進行了對比模擬研究，模擬結果表明該演算法不但能進一步提高非平穩信號的消噪精度，而且能保留信號主要細節。The method makes use of the intensity values of the object in image. adopting optimal threshold to segment the original image, it is insensitive to brightness and contrast
該方法充分利用圖像灰度信息，並且由於採用最優閾值分割，受亮度、對比度和噪聲的影響較小。分享友人