1) subsection logarithm transform
分段对数变换
1.
For the usual method of DSA has not good performance,a new algorithm based on subsection logarithm transform is presented in this paper.
由于通常的数字减影算法效果并不理想,该文提出了一种新的减影算法———基于分段对数变换的DSA算法。
2) logarithmic transformation
对数变换
1.
On the basis of calculation and analysis of statistical parameters of measured monthly rainfall sequences of thirty-three years in Guangzhou area, performs logarithmic transformation of the monthly rainfall sequences, and develops a stochastic simulation model of monthly rainfall by the first order AR(P) model.
在计算与分析广州地区33年实测月降水量序列统计参数的基础上,将月降水量序列进行对数变换,采用一阶AR(P)模型建立了月降水量随机模拟模型。
2.
A new image fusion method is proposed on the basis of combining Brovey transform with logarithmic transformation for intensity modulation.
分析了的Brovey变换融合算法,提出了一种新的基于Brovey变换、对数变换亮度调整的图像融合方法,试验数据的对比和分析证明了其保留多光谱影像的光谱信息。
3) dissymmetrical fractional Fourier transform
不对称分数傅里叶变换
1.
A new optical image encryption method using dissymmetrical fractional Fourier transform and double random phase encoding was presented.
提出了一种利用不对称分数傅里叶变换和双随机相位编码对图像加密的方法。
4) fractional transformation
分数变换
1.
By using the fractional transformation method,the exact solutions of the higher-order nonlinear Schrdinger equation are obtained which included Jacobian elliptic function solutionand new solitary wave solution.
文章基于分数变换原理,研究了用于描述飞秒光脉冲传输的高阶非线性薛定谔方程,得到了它的各种包络型Jacobian椭圆函数双周期解和新型亮孤波解。
2.
By using the fractional transformation method, the exact solutions of the higher-order nonlinear Schrodinger equation are obtained which included Jacobian elliptic function solution and new solitary wave solution.
本文基于分数变换原理,研究了用于描述飞秒光脉冲传输的高阶非线性薛定谔方程,得到了它的各种包络型Jacobian椭圆函数双周期解和新型亮孤波解。
5) logarithmic contrary(transform)
反对数变换
6) change of base in logarithms
对数底变换
补充资料：对数变换
分子式：
CAS号：
性质：又称对数变换。吸光度与试样中待测物质浓度成正比，它为透光率倒数的对数。测量用光度计仅接收透光率，故需进行对数转换。简单方法是将指示仪表刻度按对数刻划；自记型仪表可采用光电管电压的特性，电容充、放电的对数特性，半导体二极管对数特性等电学性质将输出进行对数转换。
CAS号：
性质：又称对数变换。吸光度与试样中待测物质浓度成正比，它为透光率倒数的对数。测量用光度计仅接收透光率，故需进行对数转换。简单方法是将指示仪表刻度按对数刻划；自记型仪表可采用光电管电压的特性，电容充、放电的对数特性，半导体二极管对数特性等电学性质将输出进行对数转换。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条