掩蔽法 的英文怎麼說

中文拼音 [yǎnbìfǎ]
掩蔽法 英文
masking methed
  • 掩 : 動詞1 （遮蓋; 掩蔽） cover; hide 2 （關; 合） shut; close 3 [方言] （被卡住） get squeezed [pinch...
  • 蔽 : Ⅰ動詞（遮擋; 遮蔽; 蒙蔽） cover; block; hide; shelter; spread over Ⅱ名詞（姓氏） a surname
  • 法 : Ⅰ名詞1 （由國家制定或認可的行為規則的總稱） law 2 （方法; 方式） way; method; mode; means 3 （標...
  • 掩蔽 : screen; shelter; cover; mask; blanket; hide; defilade; audio masking; aural masking; ensconce
  1. Theoretical expatiate on general concepts and fundamental principles of information hiding and steganography, also point out possible directions for further research, also analysis the probability of speech as the host carry signal and efficient masking characteristics of psycho - acoustic model, it is shown that : there is an improvement on imperceptibility according to human auditory masking effect

    闡述了信息隱藏技術和隱寫技術的重要概念、基本理論以及廣闊的應用前景。分析了將語音信號作為宿主載體信號的可行性，參考心理聲學模型的特性，得出結論:基於人耳聽覺掩蔽效應的隱寫演算法，在隱蔽性上有很大的提高。
  2. In order to reduce the musical residual noise and the background noise, a speech enhancement method based on masking properties of the human auditory system is described. this method uses bark wavelet packet transform to simulate the frequency feature of human auditory model to get the threshold

    本文以最大限度減少殘留噪聲和背景噪聲為目的，採用bark子波分析的方法模擬人耳基底膜的頻率分析特性來進行語音增強，重點進行模擬人耳聽覺掩蔽效應來確定除噪閾值的研究。
  3. This paper focuses on the research of the stress mechanism of the ribbed shell structure in statics, dynamics and under the explosive load on the basis of the engineering practice of cave depot of single aircraft. in this paper, according to the classical shell theories, the basic differential equilibrium of the ribbed shell structure and the finite element analysis of 3d rippled plate are established, in which the function of annular ribs reinforcement bars and 3d ripped steel plates are distributed in the range of the steel, and the functions along the longitude direction of tension, bending, and torsion are neglected ; applied with dynamic analytical theory, the dynamic model of ribbed shell structure and the analytical theory model of elastic - plastic are set up ; the triangle series method is used to solve the displacement and stress under the distributed load and the concentrated load of the ribbed shell structure

    本文以軍用機場地面單機掩蔽庫工程建設為工程背景，首次對內襯三維波紋鋼板混凝土拱型復合結構的受力機理進行了靜力、動力和爆炸荷載的分析研究。根據將橫肋、鋼筋及三維波紋鋼板的作用均勻分佈在殼體范圍內的情況，忽略橫肋、鋼筋及三維波紋鋼板沿殼體母線方向的抗拉、抗彎及其抗扭作用，首次推導出了內襯三維波紋鋼板混凝土殼體的微分平衡方程，建立了有限元計算模型，並採用三角函數法，求解了三維波紋鋼板混凝土拱型復合結構在分佈荷載和集中荷載作用下的位移響應和應力響應，並與普通殼體進行了比較。
  4. It also analyzed the whole stress of the ribbed shell structure under the explosive load. the analytic result keeps well with that of the dynamic response of 6. 8kg tnt. it shows that this analytic method in this paper is feasible for the design and inspection of cave depot of single aircraft

    通過理論計算與6 . 8kgtnt裝藥爆炸時的動力響應實測比較，兩者數值吻合很好，表明本文計算分析方法是可行的。為鋼板-混凝土拱型復合結構的設計與檢驗提供了理論基礎，為飛機單機掩蔽庫工程的設計檢驗提供了一條可行的計算分析方法。
  5. The purpose of this thesis is to develop the laser assisted wet chemical etching on the gaas substrate. the main contents and contributions include : 1 ) laser - assisted wet mask - etching method and poles - etching method have been proposed laser - assisted wet mask - etching method is that the area which need not etched is covered by mask film, and the uncovered area is processed by laser induced wet etching

    本文的工作就是圍繞半導體gaas基片的激光化學誘導液相腐蝕技術開展的，主要的研究結果和創新之處如下: 1 ）提出了激光誘導液相抗蝕膜掩蔽法和電極腐蝕法抗蝕膜掩蔽法是指在基片表面不需要腐蝕的區域用抗蝕膜覆蓋，激光照射在無抗蝕膜區域，對基片進行腐蝕。
  6. Standard test method for evaluating masking sound in open offices using a - weighted and one - third octave band sound pressure levels

    用a加權和1 3倍頻帶聲壓級評價敞開式辦公間掩蔽聲的標準試驗方法
  7. The masking of the auditory system is used to determine the value of each frame dynamically and the enhancement is performed selectively

    演算法利用人耳的聽覺掩蔽效應動態確定每一幀的權值，有選擇地增強。
  8. 3. a variety of speech enchancement algorithms are discussed including wiena filter, spectral subtraction, mmse algorithm and the masking model combined with the spectral subtraction algorithm

    3 .系統地研究了多種語音增強演算法，包括基於短時譜分析的維納濾波法、譜減法和mmse演算法，並研究了基於人耳聽覺掩蔽效應的語音增強演算法。
  9. In order to make integration of theory with practice, a lot of experiments have been done. mask - making technology, photoetching and wet - etching processes have been optimized. the author also presents the application and commercial value of silicon v - groove arrays

    在實踐上，對製作工藝積極探索，提出新的制備硅掩蔽膜的工藝方案，對影響光刻質量的因素深入分析，試驗摸索出適用於v型槽的各向異性濕法腐蝕的腐蝕液配方，獨立優化設計了製作硅v型槽的相關工藝，製作出高質量的硅v型槽。
  10. The sinusoidal modeling based on matching pursuit is studied in this thesis, and the concepts of dynamic masking threshold and perceptual gradient are proposed as well as the algorithm of sinusoidal modeling with perceptual gradient

    研究了基於匹配跟蹤的正弦建模問題，提出了動態掩蔽閾值、感知梯度等概念，以及感知梯度正弦建模演算法。
  11. This thesis presents a new audio digital watermark algorithm based on has model. the steps : first, it classifies the signals through fft ; second, calculating the tones, noise and the overall masking threshold of different phases through has, and changing the energy value of tones which are more than that of the overall masking threshold to embed the watermark information

    提出了一種基於人類聽覺系統（ has ）模型的音頻數字水印演算法，該演算法首先對信號進行分段離散快速傅立葉變換（ fft ） ，再根據人類聽覺系統模型計算出各段的類純音、類噪音以及各段的總體掩蔽閾值，通過改變大於總體遮蔽閾值的類純音的能量值來嵌入水印信息。
  12. Research on new inhibitor of elimination of chloride ion interference in determination of chemical oxygen demand using potassiumdichromate

    重鉻酸鉀法測定化學耗氧量消除氯離子干擾新掩蔽劑的研究
  13. I n th i s paper, we analyze error infect i on to picture and give a practicable method in errro dection. some new error concealment algorithms are also presented. this algorithms are applied in dvd decoder system based on ms dshow and intel mmx technology

    本文分析了錯誤比特出現在mpge視頻流中的不同的位置對畫面質量的影響，給出了切實可行的錯誤檢測的方法，並結合dvd解碼器開發的實踐，提出了幾種有效的錯誤掩蔽演算法。
  14. The proposed md mesh - based motion coding methodis then combined with the pairwise correlating transform, and acomplete md video coding scheme is proposed. further measures are takento reduce the mismatch between the encoder and decoder that occurs whenonly one description is received and the decoder reconstruction isdifferent from the encoder. the performance of the proposed scheme isevaluated using computer simulations, and the results show, compared toreibman s md transform coding mdtc method, the proposed schemeachieves better redundancy rate distortion performance

    數據重傳必然會引起延遲，因而在需要很短延遲的應用中是行不通的，如雙向無線通信同時在以廣播方式進行數據傳輸時也是行不通的當有大量突發錯誤時，糾錯碼如分組糾錯碼block code及卷積碼convolutional code無法在不產生額外延遲及需要額外運算的前提下對數據提供足夠的保護而錯誤掩蔽的性能則受接收到數據與丟失數據之間的殘留相關性大小的影響。
  15. Watermarking algorithm of good perception property can be designed by making full use of vision masking of hvs

    進行水印嵌入時，充分利用人類視覺系統的視覺掩蔽特性，可以設計出感知性能良好的數字水印演算法。
  16. In general, a watermark system must satisfy the two basic requirements : imperceptibility and robustness. in this thesis, we proposed a frequency - based watermarking algorithm using toral automorphisms, in which a kind of toral automorphism is employed to mix a recognizable binary image ( bw ), which contains the copyright information, into a noise - like signal

    演算法簡單描述如下：首先用一個環形自同構映射把要嵌入的數字水印映射成偽隨機噪聲，然後把該偽隨機噪聲嵌入到宿主數據頻域的低頻段中，接著把得到的頻域系數進行相應的逆變換得到嵌入水印的圖象，最後對該嵌入水印的圖象進行視覺掩蔽處理。
  17. But, though considerable process has been made in the last ten years, digital watermarking is still in its infancy, and much interesting work remains to be done this thesis addresses some problems in the gray - scale image digital watermarking that are summarized below : 1 ) whereas the basic theory of digital watermarking is still very poor, a digital watermarking mathematic model based on imperceptibility and robustness is presented by analysising the characteristic of digital watermarking ; 2 ) based on the model constructed above, by defining the measures of capacity and robustness of digital watermarking, an objective method for evaluating the digital watermarking is introduced and used to analysis some algorithms ; 3 ) whereas geometric distortion always influences the restoration of watermark, we advocate to enhance the robustness against geometric distortion by restoring the image which has been distorted by geometric transformation, and a method is designed for estimating the parameters of geometric transformation ; 4 ) based on the conclusion discussed above, and combined with the masking effects of hvs, a novel public meaningful gray - scale image digital watermarking is designed by analysising the characteristics of image gray - scale interpolation and haar wavelet transformation. the experimental results show that the method is indeed powerful ; 5 ) whereas many image digital watermarking schemes, which embed watermark by modifying the values of pixels in spatial domain and transformed domain, are confronted with the conflict between the imperceptibility and robustness, we advocated to use some stable digital characteristics of host image as watermark and a algorithm based on hermite matrix is designed

    本文重點對灰度圖象數字水印技術進行研究，主要工作如下： 1 ）鑒于目前數字水印的理論研究比較薄弱的現狀，本文通過分析數字水印的特點，建立了一個數字水印的數學模型，為進一步研究數字水印打下了基礎； 2 ）根據以上建立的模型，通過引入容量和穩健度的概念為數字水印提供了一個客觀評價方法，並對一些數字水印演算法進行了分析； 3 ）為增強數字水印抵抗幾何攻擊的能力，研究了受幾何攻擊的圖象的復原問題，並給出了一個計算圖象幾何變換參數的方法； 4 ）通過分析圖象灰度插值演算法和haar小波變換的特點，結合hvs的掩蔽效應，設計了一個公開的有意義數字水印演算法，實驗結果表明本演算法具有較強的穩健性； 5 ）目前許多水印演算法都是通過在空域或頻域修改象素值的方法嵌入水印的，這種方法面臨著透明性和穩健性的矛盾，為解決這個矛盾，本文提出以圖象的某些穩定的數字特徵為水印的觀點，並結合hermite矩陣的特點設計了相應的水印演算法，實驗結果表明該演算法具有較好的穩健性。
  18. A wavelet visible watermarking algorithm is proposed based on noise masking, then the improvement is made based on texture feature of watermark image

    摘要根據圖像的噪聲掩蔽性設計了一種小波域可見水印演算法，並根據水印圖像的紋理特徵對演算法作了進一步改進。
  19. 1. speech enhancement method based on masking properties of the human auditory system is described. in this paper, a threshold is got through simulating the frequency of human auditory in order to reduce the musical residual noise and the background noise

    在閾值法除噪中閾值確定是極為重要的環節，本文模擬人耳聽覺掩蔽效應來確定閾值大小，以有效的掩蔽殘留的音樂噪聲和最大限度的保留語音。
  20. In order to make a kind of product of mashed garlic with rich garlic sweet smell, the fresh garlic and hawthorn should be used as raw materials. by using microwave heating, polymer absorption and covering was the unpleasant smell of garlic removed with added and mixed tastes and flavor

    以新鮮大蒜和山楂果為主要原料，採用微波加熱法、吸附法及掩蔽法相結合對大蒜進行脫臭，並添加焦糖和食鹽調色調味製成一種具有濃郁蒜香味的蒜蓉調味品。
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