要定量刻画这一需求,就需要计算两列波的互相关系数(Cross-Correlation, 简写为:CC)。 计算互相关系数的软件,代码很多,在此记录一下怎样用matlab自带函数xcorr来达到此目的,怕以后忘了。 接下来,本文首先说明一下相关的物理意义,再说一下怎么做,最后归纳一下互相关系数(CC)特点。
Compute the cross-correlation on the GPU. Get cc = xcorr2(offsetTemplate,template); Return the result to the MATLAB® workspace using gather. Use the maximum absolute value of the cross-correlation to determine the shift, and compare the result with the known shift. Get cc = gather(cc...
Find the peak in cross-correlation. [ypeak,xpeak] = find(c==max(c(:))); Account for the padding thatnormxcorr2adds. yoffSet = ypeak-size(onion,1); xoffSet = xpeak-size(onion,2); Display the matched area by using thedrawrectanglefunction. The 'Position' name-value pair argument sp...
The correlation between the current NASDAQ return and the NYSE return from 20 days before isxcf(1) = -0.0108. The correlation between the NASDAQ and NYSE returns isxcf(21) = 0.7080. The correlation between the NASDAQ return from 20 days ago and the current NYSE return isxcf(41) = 0.0015...
https://www.mathworks.com/help/signal/ref/xcorr.html xcorr - Cross-correlation CODE:[acor,lag] ...
matlab开发-使用度量信号NRPSNRCrossCorrelation评估预测算法的性能。该代码计算了MSE、MAE、SNR、PSNR和互相关系数等指标。点赞(0) 踩踩(0) 反馈 所需:1 积分 电信网络下载 基于STM32设计DMA串口发送驱动 2024-11-27 18:55:50 积分:1 STM32CUBEMX配置USART通过DMA方式接收不定长数据 2024-11-27 18:44:...
%correlation length corr1 = length(x_ne)+length(h_n1)-1; corr2 = length(x_ne)+length(h_n2)-1; corr3 = length(x_ne)+length(h_n3)-1; corr4 = length(x_ne)+length(h_n4)-1; %cross correlation y1 = fftshift(ifft(fft(x_ne,n).*conj(fft(h_n1,corr1))) y...
matlab开发-非均匀采样的nxCorrCrossCorrelation。估计非均匀采样信号的(交叉)相关性点赞(0) 踩踩(0) 反馈 所需:1 积分 电信网络下载 STM32 I2C 0.91寸 128X32 OLED 2024-12-17 11:49:30 积分:1 在windows安装MySQL新手教程(AI版本) 2024-12-17 11:32:34 积分:1 ...
Matlab code for a hybrid optical-flow-cross-correlation method for PIV - Tianshu-Liu/OpenOpticalFlow_PIV_v1
1. 线性相关(Linear Cross-Correlation)的定义和计算 假设我们手里有两组数据,分别为 个和 个,表示为: 和 , 比 长,即 。序列 和 之间的线性互相关操作表示为 ,其结果也是一个序列,表示为 。具体的操作是用这两个序列进行的一种类似“滑动点积”的操作,如图1和图2所示。