针对静止图像经整数小波变换(integer wavelet transform)后,各子带系数的幅值动态变化范围小,不利 于零树编码(embedded zerotree wavelet coding)的缺点,采用“从 1 开始的整数平方”代替“2 的整数次幂”作为零树 编码的量化阈值,缩短了量化阈值间隔.通过减少重要系数在较低量化阈值中出现的机会,增加了编码过程中的 零树数量 同时通过减少参与编码的字符数及对最高频带零树不编码,简化了编码过程.实验结果表明,整数平方 量化阈值下的零树编码(integer square zerotree wavelet coding)解决了整数小波变换中零树编码的低效问题,提 高了静止图像的编码效率.
标签： wavelet transform embedded zerotree
上传时间： 2017-01-29
上传用户：as275944189
電子報軟體. 你想輕輕鬆鬆的寄送電子報 功能介紹: 1. 支援多個伺服器分散流量. (已可設定每次的最大郵件數) 2. 支援多個設定檔選擇. 3. 可直接選擇硬碟內的 HTML, 純文字檔當做寄信內容. 4. 支援定時、每日、每週、每月送信. 5. 配合 ServiceAgent 可以成為NT/2000下的服務. 6. 可夾帶附件檔案. 7. 在原本可直接選取電腦硬碟上的檔案(HTML)來做為HTML寄信的本文之外, 目前已能將 HTML 內的圖檔(gif,jpg,bmp,png)的 <img> tag 和 音效檔(wav,mid,swf)的<EMBED> tag 的內容一起勘進郵件內容裡. 8. 以 Command Line 執行的方式就能啟動寄信流程. 9. 透過電子郵件信箱即可啟動自動化電子報訂閱/取消功能! 開發工具: 1. Delphi 5 2. Indy Winshoes8 (free delphi component)
上传时间： 2014-01-05
上传用户：l254587896
SuperLU is a general purpose library for the direct solution of large, sparse, nonsymmetric systems of linear equations on high performance machines. The library is written in C and is callable from either C or Fortran. The library routines will perform an LU decomposition with partial pivoting and triangular system solves through forward and back substitution. The LU factorization routines can handle non-square matrices but the triangular solves are performed only for square matrices. The matrix columns may be preordered (before factorization) either through library or user supplied routines. This preordering for sparsity is completely separate from the factorization. Working precision iterative refinement subroutines are provided for improved backward stability. Routines are also provided to equilibrate the system, estimate the condition number, calculate the relative backward error, and estimate error bounds for the refined solutions.
标签： nonsymmetric solution SuperLU general
上传时间： 2017-02-20
上传用户：lepoke
cordic methods describe essentially the same algorithm that with suitably chosen inputs can be used to calculate a whole range of scientific functions including sin, cos, tan, arctan, arcsin, arccos, sinh, cosh, tanh, arctanh, log, exp, square root and even multiply and divide. the method dates back to volder [1959], and due to its versatility and compactness, it made possible the microcoding of the hp35 pocket scientific calculator in 1972. here is some code to illustrate the techniques. ive split the methods into three parts linear, circular and hyperbolic. in the hp35 microcode these would be unified into one function (for space reasons). because the linear mode can perform multiply and divide, you only need add/subtract and shift to complete the implementation. you can select in the code whether to do the multiples and divides also by cordic means. other multiplies and divides are all powers of 2 (these dont count). to eliminate these too, would involve ieee hackery.
标签： essentially algorithm describe suitably
上传时间： 2017-03-02
上传用户：litianchu
音乐播放器,可播放大部份与微软Windows Media Player兼容的媒体档案格式，当中包括非串流处理的档案类型(mp3,wav,mid,avi,mpg)以及串流处理的档案类型(asf,wma,wmv) 您亦可以使用预先制作好的播放清单 (如: pls,m3u)。如果您想要利用本程序做为串流媒体服务，您可能需要准备一些串流处理媒体的执行文件 (如: asx,wax,wvx)。为你的网页增加个音乐点播DJ.
标签： Windows Player Media 音乐播放器
上传时间： 2013-12-10
上传用户：qq21508895
/*请分别定义图形类Shape（抽象基类），继承类矩形类Rectangle、正方形类Square、 圆形类Circle；它们具有的方法是计算周长和面积。在另一个类的main函数中分别创建矩形、 正方形和圆形对象，设置所需的属性值，打印其周长和面积。*/
上传时间： 2014-01-16
上传用户：lili123
分别定义图形类Shape（抽象基类），继承类矩形类Rectangle、正方形类Square、 圆形类Circle；并且计算周长和面积。在另一个main函数中分别创建矩形、 正方形和圆形对象，设置所需的属性值，打印其周长和面积。（备注：只要把该文件解压，把里面的东东COPY去即可使用）
上传时间： 2017-07-25
上传用户：wuyuying
The radially averaged power spectrum (RAPS) is the direction-independent mean spectrum, i.e. the average of all possible directional power spectra. This function computes and plots the RAPS of an input image. The function was written to produce the RAPS for square weather radar reflectivity images so you will have to relabel the plot axes and title to suit your needs. The radially averaged power spectrum provides a convenient means to view and compare information contained in 2D spectra in 1D
标签： spectrum direction-independent i.e. the
上传时间： 2013-12-17
上传用户：watch100
symbian s60 2rd声音播放源码，支持wav和mid等音频格式
上传时间： 2014-06-14
上传用户：shizhanincc
Main program running when workpiece is ready on deferent belt(deferent_ready=ture). * Call Square_Wave subroutine to generate 0.5ms square wave on P1.2 to drive * electromotor,then drive deferent belt step forward. When it steps to the measure * zone, it stops to be measured. Then call A_D subroutine to transform analog * signals to digital signals , after then call serial subroutine to transfer * digital signals to PC. Call square wave subroutine to drive deferent belt step to * original position waitting for defere ready flag to run the next circle.
标签： deferent_ready workpiece deferent program
上传时间： 2017-08-31
上传用户：baiom
