The basic conception of dyadic wavelet transform is introduced The practical expression of dyadic discrete wavelet transform of digital signal is presented.
介绍了二进小波变换的基本概念 ,给出了数字信号二进离散小波变换的实用表达式 。
An investigation and analysis on the issue of the relationship between Xian tian tu and binary system;
对“先天图与二进制关系”之争的考察与辨析
Had Leibniz not seen the Xian tian tu before he founded the binary system? —— A textual research of European literature about culture exchange between China and the West in the seventeenth century;
莱布尼茨发明二进制前没有见过先天图吗——对欧洲现存17世纪中西交流文献的考证
Computers need numerical value change between binary system,octal system and decimal system The fortran77 is used in the programming to perform the numerical value converting.
计算机需要数制转换,计算机内部使用二进制,二进制八进制十进制之间的数制转换,FORTRAN77编制,围绕二进制与小数,完成二进制八进制十进制之间的数制转换。
The four-level center B-spline semi-orthogonal dyadic wavelet was used to identify the singular points of the faulty current,and the theoretical support is analyzed.
介绍了将四阶中心B样条半正交二进小波用于故障电流特征时刻的确定,详细阐释了其理论依据;借助主保护、重合闸整定配置时间信息,在考虑保护和断路器正确动作、拒动、误动等情况下,就超高压电网发生简单故障,故障发生在本站或相邻站线路时,详细分析本站线路故障电流的变化特点,提出基于故障模拟量选线诊断新思想,克服了传统基于数字量信息故障选线诊断的缺陷。
The property and algorithm of dyadic wavelet function and dyadic wavelet transform basing on B spline are introduced.
介绍了基于Ｂ样条的二进小波函数及二进小波变换的特性、算法，重点介绍了基于小波变换模极大值的信号奇异性检测理论，其要点是：信号可以通过其小波变换模极大值表示，也可通过其模极大值重构。
This paper present the existing image edge detection method based on dyadic wavelet transform first,and then analyzed the drawback of the method.
该算法主要是对边缘点的判断准则进行了改进,通过将任一点的梯度方向与水平、垂直、45°、135°方向进行比较,将这4个方向中与该点梯度方向最接近的一个方向重新赋给该点的梯度方向,并检验二进小波变换的模在该点是否为新的梯度方向上的局部极大值,若是,该点就是边缘点,否则不是。