本程序利用奇異值分解對3通道彩色圖像進行壓縮分解，具體步驟如下： 壓縮過程： 1. 選取子圖像大小K值，把圖像分解成M×M個子圖像，IMG(s),s=1,2,…, M2，其中M=N/K，原始圖像IMG大小為N×N。 2. 計算這M2個子圖像的平均值average，對每幅子圖像減去均值圖像得到新圖像。 3. 計算相關(guān)矩陣R，其元素定義為 。 4. 計算R的特征值與特征向量，計算每幅子圖像與最大特征向量的內(nèi)積，便得到編碼，即壓縮后的圖像。
上傳時間： 2013-12-23
上傳用戶：chenxichenyue
Simple VaR Calculator provides: - Evaluation of return distribution of single asset or portfolio of assets - Volatility forecasts using moving average and exponential algorithm - Value at Risk of single asset or portfolio measurement using parametric and historical simulation. - Historical data can be obtained from simple text file or MS Excel using Matlab Excel Links.
標簽： distribution Calculator Evaluation portfolio
上傳時間： 2013-12-21
上傳用戶：hasan2015
A collection of LDPC(Low-Density Parity-Codes) tools. Including: Code construction Density Evolution Decoding Algorithm Girth average Counter Stopping set and error Floor,etc
標簽： Parity-Codes construction Low-Density collection
上傳時間： 2016-05-10
上傳用戶：liglechongchong
求時間序列互信息的程序，英文為average mutual information，適合與混沌時間序列分析．
上傳時間： 2016-06-05
上傳用戶：yan2267246
1．產(chǎn)生白噪聲程序 編程產(chǎn)生一組正態(tài)分布的白噪聲信號,它的均值和方差以及長度可隨意調(diào)整。將產(chǎn)生的白噪聲信號存入數(shù)據(jù)文件。 本程序算法用C++語言編寫。首先用乘同余法產(chǎn)生均勻分布白噪聲，再用變換抽樣法轉(zhuǎn)換為高斯分布白噪聲。算法及程序?qū)崿F(xiàn)敘述如下。 1) 設(shè)定x初值為11,A＝179，長度WNlength,均值A(chǔ)verage,方差Serror為用戶輸入的變量； 2) M =235，ζi= x/M； 3) 取ζi的小數(shù)部分再賦值給ζi＋1，這就是均勻分布白噪聲； 4) 利用公式 η1=Serror×(–2*logζ1)0.5×cos(2pζ2) ＋Average η2= Serror×(–2*logζ1)0.5×sin(2pζ2) +Average 計算得到均值和方差可任意調(diào)整的白噪聲序列。式中 為均勻分布白噪聲。
上傳時間： 2016-10-19
上傳用戶：hanli8870
ClustanGraphics聚類分析工具。提供了11種聚類算法。 Single Linkage (or Minimum Method, Nearest Neighbor) Complete Linkage (or Maximum Method, Furthest Neighbor) Average Linkage (UPGMA) Weighted Average Linkage (WPGMA) Mean Proximity Centroid (UPGMC) Median (WPGMC) Increase in Sum of Squares (Ward s Method) Sum of Squares Flexible (ß space distortion parameter) Density (or k-linkage, density-seeking mode analysis)
標簽： ClustanGraphics Complete Neighbor Linkage
上傳時間： 2014-01-02
上傳用戶：003030
Produce Java classes to calculate and display the Poisson probability when input the value of the average (A) arrival rate of customers at some business in the range of 1 to 10. The error message will output when A is out of the range。
標簽： the probability calculate Produce
上傳時間： 2014-01-10
上傳用戶：moerwang
zlibyou can found an optimized version of Zlib 1.1.4 that you can embed into every Delphi executable without use external dlls. Further I have build a little example hoping to aid "young" Delphi programmers getting in trouble with streams... Please let me know if you ll discover errors. These objects and sources are targeted for executing into P6+ CPU core, and Delphi5-6-7-x software. Benchmarks show this zlib 40％ average faster than native DLL distribution and 100％ reliable.
標簽： executable can optimized zlibyou
上傳時間： 2016-12-19
上傳用戶：lili123
full wave rectifierDuring the period from 偽 to 蟺, the input voltage vs input current is are positive and the power flows from supply to the load. The converter is said to be operated at rectification mode .During the period from 蟺 to 蟺+偽 , the input voltage vs is negative and the input current is is positive and reverse power flows from load to the supply. The converter is said to be operated in inversion mode. Depending on the value of 偽, average output voltage can be either positive or negative and hence provides 2 quadrant operation.
標簽： input rectifierDuring the positive
上傳時間： 2017-04-10
上傳用戶：alan-ee
Java has become a confusing world. Five years ago, there were few decisions to make once you started programming in Java—you used AWT for graphical user interfaces, sockets for network programming, and hacked together everything else you needed. Since then, though, the APIs available for the Java language have grown, and grown. . . and grown. Now you can dabble in Swing, servlets, Enterprise JavaBeans (EJB), JavaMail, and more. Additionally, there are now packages of APIs, like the Java 2 Micro Edition (J2ME) and Java 2 Enterprise Edition (J2EE). While these packages seem to be nicely wrapped bundles of useful APIs, they don t help the average developer figure out how to piece together the APIs contained in these packages. Though it s simple to find documentation on the individual APIs, getting the "big picture" is difficult, at best. One of the most interesting, but difficult, aspects of Java today is building Java enterprise applications using the J2EE package.
標簽： confusing decisions become world
上傳時間： 2013-12-30
上傳用戶：haoxiyizhong
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