一阶差分法,method of first order difference
First Order Generalized Difference Scheme一阶广义差分法
3)first order differential一阶差分
1.The classical moving average technique andfirst order differential were used for segmentation.先采用移动平均法(moving average,MA)和一阶差分法确定SEMG信号中对应的每个动作波形的起止点,再利用递归量化分析(recurrence quantifica-tion analysis,RQA)方法提取各种动作波形的非线性特征参量(确定率、递归率等),由两路SEMG信号的这些特征参量构成特征矢量,输入BP(back propagation)神经网络,完成对不同动作的分类。
bined with thefirst order differential algorithm, this method has solved the problem successfully.针对双电位器式传感器检测系统存在的跳区现象，提出了一种新的判区方法，并结合一阶差分算法成功地解决了跳区问题，同时也提高了系统的抗干扰能力。
4)first difference一阶差分
1.At the meantime,during the procedure of pre-processing,according to the character that the illumination conditions on the scene of the expressway toll collection frequently change a lot,the algorithm offirst difference combining the method of fixing the threshold of binarization via accumulating the points was used to complete the job of extracting the outline of the image.在图像预处理过程中,根据高速公路收费站点光照条件不断变化的特点,采用一阶差分算法并结合累积像素点确定二值化阈值的方法,完成图像边缘轮廓的提取工作。
2.Realizing of algorithm of composite data filter and eliminating singular term usingfirst difference method in data collection and processing were analyzed and calculation results were given.介绍了建材检测微机控制系统总体结构,详细分析了数据采集与处理过程中复合数据滤波、一阶差分法剔除奇异项算法的实现过程,给出了计算结果。
5)first order difference一阶差分
6)first order differential Fourier algorithm一阶差分傅立叶算法
延伸阅读
对称差分(n阶的)对称差分(n阶的)symmetric difference of order对称差分(n阶的)l另11111州tric山ffer曰℃eof份der‘c“MMe邓一，ecK即pa3Hoc几“op，皿Kan」，一元实变函数f在点x上的表达式声/n、，.、。，/.n一Zk八 △口ffx，h)=)l:’1(一1)“f lx十二二~一竺二生h 1. 一‘““一””k饥戈k/、‘产“戈一2‘’/‘将h换成Zh，下面的表达式也称为对称差分:息川(一1)*，‘二+、。一2、)。).假若f(x)在x有n阶导数厂时(x)，那么 △二f(x，h)=./戈n)(x)h”+o(h”).T .fl .J’IyKame皿。撰
