spatial wavelet 中文意思是什麼
spatial wavelet
解釋
空間子波-
They adopted different ways towards wavelet coefficient singly and could not make use of spatial partial individually features such as cross - scale fringe existed widely
Davis在汲取了rinaldo和calvagno在分形塊預測方案中，只是單一地對不同尺度系數用不同的處理方式的不足，提出了sqs編碼演算法。 -
After completing the mctf using db2 wavelet, it is well integrated with discrete wavelet transform ( dwt ) and embedded zero tree wavelet. it uses atom structure to organize the coded bit - stream to achieve the brilliant combination of three scalabilities : temporal, spatial and psnr scalabilities. and the software platform is based on vc + + 6. 0
在基於db2小波的運動補償時域濾波方法實現之後，本文將之和離散小波變換（ dwt ） 、嵌入式零樹編碼進行有機結合，並採用基於基本原子粒的數據流組織結構將分層后的數據流有效地組織起來，實現了具有時間、空間、質量三方面的完整可伸縮性的編解碼系統，系統的軟體平臺基於vc + + 6 . 0實現。 -
A structural damage identification technique based on wavelet transform of spatial structural response measurements is discussed
摘要利用連續小波空間變換技術，對工程結構損傷信號進行分析，從而識別結構的損傷位置。 -
In this paper, a gray video md - 3d - spiht algorithm is proposed, which extends the md - spiht algorithm into 3d - spiht. this method is to divide the 3 - d wavelet coefficients into some number p of different groups according to their spatial and temporal relationships, and then to encode each group independently using 3d - spiht algorithm, so that p independent embedded 3d - spiht substreams are created. multiple descriptions are created
2 、將md - spiht方法推廣應用於視頻序列，提出了灰度視頻md - 3d - spiht演算法，該演算法先對一組視頻圖象進行多級離散三維小波變換，在小波域建立空間方向樹，及對空間方向樹分組，再分別對各組進行3d - spiht編碼，即產生多個描述，且每一描述的碼流是完全嵌入式的，易於實現質量可分級編碼。 -
Lacking of space locality in time domain, fourier analysis can only make certain of the integral singularity of a function or signal. as a result ; it is difficult to detect the spatial position and distribution of broken signal by fourier analysis. wavelet analysis has the characteristic of spatial locality, and its wideness in both windows of the time and the frequency can be adjusted, so it can analyze the details of a signal
小波分析優于傅里葉之處在於，小波分析在時域和頻域同時具有良好的局部化性質，因為小波函數是緊支集，而三角正、餘弦的區間是無窮區間，所以小波變換可以對高頻成分採用逐漸精細的時域或空間域取代步長，從而可以聚焦到對象的任意細節。 -
Tested on synthetic example, the results show that the spatial domain data processing methods presented in the thesis have higher resolution than the previous wave number domain methods. 2. wavelet has been discussed, this is a new data processing method and the test on synthetic examples and field data show that it is a good latent method
通過數值實驗本文認為，用本文空間域的解析延拓和導數的求取方法，在網格尺度相對于延拓高度很小的情況下，對磁異常進行延拓和求垂向導的精度是比較高的。 -
Lacking of space locality in time domain, fourier analysis can only make certain of the integral singularity of a function or signal. as a result, it is difficult to detect the spatial position and distribution of broken signal by fourier analysis. wavelet analysis has the characteristic of spatial locality, and its wideness in both windows of the time and the frequency can be adjusted, so it can analyze the details of a signal
經典的fourier變換把信號按三角正、餘弦基展開，將任意函數表示為具有不同頻率的諧波函數的線性迭加，能較好地刻劃信號的頻率特性，但它在時空域上無任何分辨，不能作局部分析，這在理論和應用上都帶來了許多不便。 -
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。 -
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。 -
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。 -
Discuss the wavelet interpolation method in spatial domain with the multiresolution anaysis, and give a model of multi - scale reconstruction from multiframes to superresolution. 4. develop a practical superresolution image restoration system, which includes some basic image processing and the superresolution of image
4 、應用文中的研究結果，在微機上建立了一套簡單實用的超解析度影像重建系統，該系統包括了對影像的基本預處理和影像重建的基本過程。 -
The states of the art of dvd protection are described, and two protocol ( cprm and dtcp ), which is proposed by w09 group, are introduced. a novel fragile watermarking approach and related tamper detection are proposed. taking still image as an example, the watermark are embedded in the discrete wavelet domain of an image, so tamper detection is possible in localized spatial and frequency regions
第7章探討了水印演算法設計與水印應用系統設計間的區別，指出水印系統的實用性不僅僅取決于技術上的完善，同時也需要具有完備的協議；提出了一種二維偽隨機序列的產生方法；討論了影響水印系統性能的主要因素及解決方法；舉例說明了完整水印系統的設計過程並嘗試提出了一種完整水印系統協議。 -
Without much theoretical deduction in this dissertation, we focus mainly on the several characteristics of wavelet, such as the localization in both the spatial and the frequency domain derived from the compact support in the two domains ; the rnultiresolution representation property ; and the octave divided frequency property, etc. after a brief overview of the principles and methods of image compression, video coding algorithms are introduced including 3 - d wavelet video coding and 2 - d wavelet video coding. based on the above, the research of this dissertation consists of three aspect : firstly, the 3d - spiht algorithm is modified which optimizes bit allocation
具體說，本論文包括以下內容：首先，本文分析介紹了小波理論，文中沒有過多的理論推導，而是從小波具有的一些特性，如時頻局部性、多解析度分解特性和倍頻程頻帶分解特性入手，力求對小波變換有一個宏觀的了解。其次，介紹了基於小波的圖像編碼的原理和常用的編碼方法。最後，介紹了基於小波的視頻編碼的方法，一種是基於3 ? d小波視頻編碼，另一種是基於2 ? d的小波視頻編碼方法。 -
( 2 ) a new texture classification algorithm based - on the lifting wavelet transform in suggested utilizing wavelets " perfect performance in spatial - frequency localization and the lifting wavelets " in - place operations. it computes the entropy values of the sub - frequency images disposed by the two - layers " lifting wavelet transform, and has merits of low feature dimensions, low computational cost and good capability
利用小波分析的時頻局域化特性以及提升小波的本位運算等優點，對紋理圖象進行提升小波分解，再對得到的高頻子圖繼續做第二層小波分解，然後以各頻率子圖的圖象熵作為圖象的紋理特徵進行紋理分類。 -
With eof reof, merlet wavelet analysis, the spatial anomaly features and time evolution rule in summer of northwest chine by using the zndx grades data from 104 observational stations are studied
通過對西北地區年、季旱澇等級與歷史記錄的對照，確定出更適合於西北地區旱澇指數分析的zndx指數及其旱澇等級劃分標準。 -
As analyzing the optical spatial filter and frequency domain filter with wavelet transform, the space variable processing > matched filtering and imagery system are the examples. all of these confirm the feasibility of wavelet transform applied in optical information processing
用小波變換處理光學信息，主要的是應用小波的多分辨特性，小波變換的定義是一相關運算，很容易在光學系統中實現，這是光學小波變換的理論依據。 -
And according to the characteristics of the noise, we provided some algorithms : wiener filter based on noise characteristic, multi - threshold wavelet filter, temporal - spatial - frequency domain combined filter based on the motion estimation
並根據噪聲的特點，提出了基於噪聲特徵的wiener濾波方法、多閾值小波濾波器、基於運動估計的時空頻域相結合的濾波方法。 -
There are spatial and temporal scalability simultaneously in three - dimensional wavelet transformation for sequence pictures, it is one of best video encoding methods in network video
視頻序列圖像的三維小波變換壓縮，同時具有空間和時間的內在伸縮性，是網路視頻傳輸的理想編碼方法之一。 -
After the image lifting wavelet transformation, its coefficients have some characteristics, for example : the frequency compression characteristic, namely the primitive image energy majority of gathers to the low frequency sub - belt ; spatial compression characteristic, namely high frequency sub - belt energy majority of centralisms in primitive corresponding and so on image edge, outline position ; the coefficient distribution similarity, namely in the
經提升小波變換后，其系數具有如下特性:頻率壓縮特性，即原始圖像的能量大部分聚集到低頻子帶;空間壓縮特性，即高頻子帶的能量大部分集中在原始圖像的邊緣、輪廓等對應的位置;系數分佈相似性，即同一方向上各級子帶系數幅值分佈大體一致。 -
Secondly klt and reversible integer - to - integer wavelet transform for image compression are discussed, and a method of nearlossless compression of multispectral images is given, which combines klt and integer wavelet transform together. the spatial redundancy in the images is removed by klt and the inter - band redundancy is removed by the integer - to - integer wavelet transform
接著詳細研究了k - l變換原理和整型小波的構造方法，編程實現了結合k - l變換和整數小波變換的多光譜圖像壓縮演算法，該演算法將k - l變換用於去除多光譜遙感圖像的譜間冗餘，在譜內則使用整型小波方法去除空間冗餘。
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