threshold selection 中文意思是什麼
threshold selection
解釋
閾值選擇-
This thesis studies the law of affecting de - noise result and the selection of the threshold and the wavelet function, the combination of wavelet and fft in the fault diagnosis of turbine - generator sets : by the de - noise anslysis of blocks and sin signals, concludes : to blocks signals, usually adopts soft threshold ; the law of affecting de - noise result is when use wavelet auto - de - noise, with the increasing of decomposed level, the de - noise result becomes worse while the level blow the 3, when the level above 3 and when uses wavelet packet, it is the other way round ; the best de - noise methods of the signal is that uses " dbl " wavelet function, three level, soft and " rigrsure " threshold
本文研究了分解層數對消噪結果影響的規律和閾值、小波函數的選取，結合小波分析與fft分析診斷汽輪發電機組的故障。通過對brocks和sin兩信號的分析，得出：對blocks信號進行分析一般採用軟閾值；分解層數對消噪結果影響的規律為用小波自動降噪在分解層數小於3時，隨著分解層數的增加，消噪結果變好，反之，則變差，用小波包降噪時隨著分解層數的增加，消噪效果變好；適宜選用dbl小波軟rigrsure閾值自動消噪。 -
A hybrid threshold selection approach for document image binarization
字元圖像混合二值化方法研究 -
This paper introduces a project based on code division multiplexed that is used to realize four el channels ' s wireless transportation. after briefly introducing the whole structure of the device of transportation, this paper introduces mainly implemention of the hardware. futhermore, the discussion concerning the selection of principles in code acquisition and the threshold setting of code acquisition on continous pilot in the receiving unit is given. at the same time, the methods about how to design the parameters of dll is introduced in this paper. in addtion, how to solve the actual problems in debugging the hardware is also provided
本文提出了一種基於碼分復用技術的四路e1數據擴頻無線傳輸設備的實現方案。在介紹整個擴頻數傳設備實現框圖的基礎上，重點介紹了硬體平臺的實現；接收單元捕獲策略的研究及其捕獲門限的確定方法；以及接收單元dll環路參數設計方法；並給出了調試過程中遇到的實際問題及其解決措施。基於調試所遇到的問題，論文的最後提出了這套數傳設備的改進方案。 -
A method for gray - level threshold selection based on maximum entropy
基於閾值的小波域語音增強新演算法 -
18 otsu n. a threshold selection method from gray - level histogram. ieee transaction systems, man cybernetics, 1979, 9 : 62 - 66
識別器為三個分類器的并行組合，包括神經網路k近鄰分類器和基於模糊的k近鄰分類器。 -
This paper illustrates detailedly the thin groupware auto - adaptive recognition system ; it also illlustrates the procession of capture image and take indispensable foreclose to wipe off noise in order to get boundary easilyer. the recognition system uses " hough " transform method to make the recognition area orientation, and according to the unstable environment such as lights which leads to the change of the image ' s brightness, thresholds picture using an iterative selection method and then growing process for cell image segmentation based on local color similarity and global shape criteria, adaptively gets the best threshold to divide the washer off the background. the recognition system uses the classifier based on minimal - error - ratio bayes method to make decision after getting image characteristic
本文詳細介紹了薄形組合件自適應識別系統；闡明了圖像的分通道自動採集過程，以及對採集到的原始圖像所進行的預處理方法。通過採用哈夫變換去除偽邊緣點的方法，有效地解決了識別區域的定位問題。針對裝配零件（主要是墊片）薄、小導致圖像信息少、識別難度大，以及材質不一導致採集到的組合件圖像亮度波動等問題，提出了使用最佳閾值迭代法和使用種子填充的圖像串列分割技術，自適應地找出最佳閡值，使墊片和背景分離，從而提取墊片數目信息。 -
Thirdly, a new reduced - rank subspace selection algorithm via variable threshold is proposed
進而提出了一種基於可變閾值的降秩子空間選擇演算法。 -
Secondly, this paper mainly put forward different grey level threshold value segmentations of plane target after brief analyse the smooth and sharp image of image strengthen technology, segmentation for the overall situation, adopt the maximum variance method, the maximum entropy combine with adaptive threshold selection method, the maximum variance ration between two classes and in two classes ; segmentation for the part situation, has adopted the adaptive threshold value method ; to background more complicated segmentation, have adopted the two - dimentional maximum entropy method
其次，在簡要的分析了圖像平滑和銳化的圖像增強技術后，重點研究了飛機目標的灰度分割，提出不同的灰度閾值分割方法進行圖像分割，對于全局分割，採用了最大類間分割法、最大熵與一致性準則相結合法、最大類間類內方差比法;對于局部分割，採用了自適應閾值法;對于背景較復雜的分割，採用了二維最大熵法。 -
This article introduces the process and requirements of detection set by iaea in the light of the need for detection, setting of investigation levels and alarm threshold, selection of instrument, location and evaluation of radioactive materials
本文從探查需求分析、調查水平和報警閾的確定、儀器選擇、探測報警、核查定位、鑒別等幾個方面介紹了對非法運輸放射性物質進行探查的一般過程和要求。 -
According to the character of the flyers, a one - dimension maximum entropy image binary conversion method based on edge features is proposed, which can implement adaptive threshold selection
針對飛行物圖像的特點，提出了一種新的基於邊界特徵的一維最大熵圖像二值化分割方法，該方法可以自適應地選取閾值。 -
This paper mainly accomplished the following research : summarize the classify and application fields of four - probe testing technology ; take the square four - probe testing technology study by using the advantage of rymaszewski method in auto - eliminating the portrait wandering influence to induct ry method to square - probe testing method ; deeply study the influence of probe wandering to progressed ry method testing result ; complete the design of testing panel and testing circuit, realize the auto - testing of mono crystal wafer ; discuss the image enhancement and threshold selection problem in image identify, and finally accomplish the identify of probe pinpoint. the main new view points of the research : 1. it is the first time for applying image manipulation and analysis technique to the sheet resistance measurement, and achieving the auto - location function of the probe
為此，本文開展了以下研究工作：綜述了四探針技術的分類以及應用范圍；對方形四探針測試技術進行了研究，利用rymaszewski法自動消除探針縱向游移影響的優點，將它應用於方形探針測試法中，並對探針游移對改進rymaszewski法測試結果的影響進行了深入探討，提出了用圖像識別技術監測測試進行的方法；完成了測試系統的測試平臺以及測試電路的設計，研製出具有圖像識別功能的斜置式方形探針分析儀一臺，實現了矽片電阻率測試的自動化；對圖像識別過程中涉及到的圖像增強和閾值選擇問題進行了論述，最終實現了對探針針尖的圖像識別以及探針測試結構的自動調整，保證了方形探針測試儀的測試精度。 -
Studying various pretreatment for the probe image and applying the pixel threshold selection technique to distinguish the probe from wafer and adjust the measurement position automatically
研究了探針圖像的圖像增強和閾值選擇問題，識別探針並自動調節探針測試位置。 -
A new image sampling method and a device for transmission flow measuring are provided, and an edge detection method based on the semantic weight and threshold selection tactics based on the vision model are used to extract the contour, calculate the area and volume within a short time span
設計了一種新型的用於傳輸流量檢測的圖像採集方法和裝置，並利用基於語義權值的邊緣提取方法和基於視覺模型的閾值選擇策略進行傳輸帶上物質的截面輪廓線提取，計算物質截面面積和較短時間內的流量體積。 -
According to these features, this thesis not only presents how to tone up, segment, match after a target being locked and extract image by using sobel brim extraction method but also raise a new threshold selection method - - fuzzy threshold method when extracting brim. in a tv target tracing system, image matching recognition also play an important part
針對這些問題，本文在具體闡述了目標捕獲后，如何對圖像進行增強、分割、匹配識別等圖像處理方法的同時，使用了sobel邊緣提取方法進行提取，給出了一種新的在邊緣提取時閾值選擇的方法? ?模糊閾值法。 -
This thesis is concerned with fault detection and isolation problem for dynamic systems such as norm - bounded uncertain systems, state - delayed uncertain systems, linear parameter - varying systems with time delays, time - delay systems with markovian jump parameters and nonlinear systems by using fault detection filter, threshold selection method and linear matrix inequalities
本論文研究了動態系統的魯棒故障檢測與分離問題，基於故障檢測濾波器和閾值邏輯方法，採用線性矩陣不等式技術，研究了范數有界不確定系統、時滯不確定系統、時滯lpv系統、時滯馬爾可夫跳躍系統、非線性系統的魯棒故障檢測與分離問題。 -
Four families of mother wavelets, four threshold selection rules and three threshold rescaling methods are tested in a series of experiments to estimate the functioning of those wavelets and thresholding parameters
然後對實驗數據進行了去噪處理實驗。以評價各種小波函數和閾值選取方法的優劣。 -
The two difficulty, one is which mother wavelet and decomposition scale can get best de - nosing effect in practical application, another important problem is threshold selection, which may be occurred in wavelet thresholding, is completely and deeply discussed
並針對閾值去噪法中會遇到的小波基及分解層數的選取和閾值的合理選取兩個難點，我們進行了系統深入的討論。 -
A novel energy cell based wavelet - thresholding denoising method is presented based on the " rigrsure " threshold selection scheme. the energy cell is used not only on threshold selection but also on coefficients disposing after threshold selecting. the wavelet coefficients of real signals are strengthened in the process of wavelet denoising to distinguish them from those of noise more efficiently, and, as result, the significant loss of information in the signal content is reduced
第三章以「 rigrsure 」閾值選取規則為基礎，提出了一種基於能量元的小波閾值去噪處理方法，它不僅可以在去噪的過程中將信號增強，使得在有效地去除噪聲噪聲的同時，減少有用信息的丟失，而且還可以將保留下來的小波系數還原，避免失真。 -
3. the third part discusses the threshold selection technique in image processing, and presents an automatic threshold selection method. 4
著重介紹了圖像處理中閾值選取的常用方法，提出了一種有較強針對性的閾值優化自動選取的方法。 -
Threshold selection in tail index estimation based on exponential regression model
基於指數回歸模型的極值指數估計的門限選擇
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