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Tu Nguyen


Last seen: 5 månader ago Active since 2022

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use fitcknn, fitcsvm
Hi all, I have a template ECG signal, and I have 40 test of ECG. Now I have to use function fitcknn and fitcsvm to do machine l...

5 månader ago | 0 answers | 0

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Question


Moving average and smooth the signals
Hi all, I am dealing with my homework. In the guide image, after plot square filtered signals, how can I classify the test dat...

5 månader ago | 0 answers | 0

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Question


Design FIR filter to separate signals
Dear all, I have a data have 2 signals, how can I design a fir filter and iir filter to seperate the left signal alone. Th...

5 månader ago | 0 answers | 0

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How to make the background clearer?
Hi all; How can I make the background clearer of the input image to get the image like the output? Thank you so much for you...

5 månader ago | 1 answer | 0

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Question


Count objects labeled in image
Hi all, I identified circles and rectangular by a mark circle at centroid. Now I want to count how many object have labeled an...

5 månader ago | 2 answers | 0

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answers

Question


count rectangular and circles
Hi all, I want to count how many rectangular and circles in the image? what is the difference between rectagular and circle in ...

5 månader ago | 1 answer | 0

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answer

Question


collect all same coins in each figure
Dear all; I want to collect all same value coins in each figure. For example, all 1 cent coin in 1 figure, all 5 cent coin in 1...

5 månader ago | 0 answers | 0

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answers

Question


Compute the average of pwelch
Hi all I have eeg signal with 129 samples, I computed each signal, now I need to take the average of all 129 samples and plot ...

6 månader ago | 1 answer | 0

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Question


Welch's method implementation
Hi Dears; I want to loop through the data 256 points at a time, and 128 points overlap, However, I beleive that my function mis...

6 månader ago | 1 answer | 0

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answer

Question


To create a false color image
Hi all; I am doing an assignment that create a false color image from stretched channel of each color. I got stuck in creatin...

6 månader ago | 0 answers | 0

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Question


Statistic bar chart and lining the points of bar charts
Hi Dears, How can I have a line go through all the bar in the graph? And how can I have the value of n_random label on each ba...

6 månader ago | 0 answers | 0

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Question


What is correct variables of H for this code?
Hi all, this is the code of my professor, what is the correct function of H, I tried many times but the code did not run load M...

6 månader ago | 0 answers | 0

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Question


cannot run the code because unknown about getMemberNames function
Dear all, This is the answer of my professor about the ECG detection, but I cant run that code. Anyone know how to fix this, pl...

6 månader ago | 1 answer | 0

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answer

Question


fix the indices of the matrix
I really need help to fix the indices of the for loop to run the QRS detection. I updated the file, this code run with the f...

6 månader ago | 2 answers | 0

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answers

Question


how to solarize and remove background of image
Hi all, I do my HW assignment, I did the solarize but how can I remove the background to look like the answer image? I3=imread(...

7 månader ago | 1 answer | 0

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Question


How to extract the hand out of the background? (homework assignment)
Dear all, I want 'my output' image like exactly 'ouput' image. I followed step by step on the intrunction posted here. Can any...

7 månader ago | 1 answer | 0

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answer

Question


high pass filter of IIR
Hi all, how can I plot the Y2 =0.765*X - 1.53*(X-1) + 0.765*(X-2) + 1.475*(Y2 - 1) - 0.587*(Y2-2); X = cos(20*pi*5*n*1/100) - si...

7 månader ago | 1 answer | 0

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Question


Find the bandwidth of a signal
How can I find the bandwidth of the signal in the attached picture?

7 månader ago | 0 answers | 0

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Question


Code runs very slow
clc; close all; clear all; %Define domain syms x L = pi; N = 1024; dx = 2*L/(N-1); %Define rectangular function f = rec...

7 månader ago | 1 answer | 0

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answer

Question


Why does it return 0 value? (Plotting fourier series)
clc clear all close all L = 1; syms x n = [-4:4]; rectn = rectangularPulse(-1,1,x); F_rectn = fourier(rectn); rp1 = real...

7 månader ago | 1 answer | 0

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Question


Coding for summation of Fourier transform
clc clear all close all L = 1; n = [-4:4]; syms x rectn = rectangularPulse(-1,1,x); F_rectn = fourier(rectn); rp1 = real...

7 månader ago | 0 answers | 0

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Question


set the unit step function
Dear all, how can I set the function like this: x[n] = [1 2 3 4 5 6] with correlation n = [0 1 2 3 4 5]? Thank you so much for ...

7 månader ago | 1 answer | 0

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Question


Plot with specific x value
clc; close all; clear all; x1= [1 2 3 4 5]; L = 2; n = linspace(0,4,10); m =linspace(0,10,10); h1 = dirac(n - m*L); idx ...

7 månader ago | 1 answer | 0

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Question


plotting delta function in zero interpolation and decimation
clc; close all; clear all; x1= [1 2 3 4 5]; L = 2; n = linspace(0,4,100); m =linspace(0,10); h1 = dirac(n - m*L); idx =...

7 månader ago | 1 answer | 0

1

answer

Question


What is sigma function?
Hi all, this is an assignment of from class digtal signal processing. The question 1 is the image "Question1", what is the sigma...

7 månader ago | 1 answer | 0

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Question


Matlab doesn't run
clc; close all; clear all; syms w; n = -5:0.01:5; x21 = exp(-abs(n)); X_21= sum(x21.*exp(-j*w*n)); figure (2) subplot(5,...

7 månader ago | 2 answers | 0

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answers

Question


plot repeated rect function
Dear all, How can I plot the rectangular function like the image? y = 2 Thank you so much for your help

7 månader ago | 1 answer | 0

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Question


Plot from negative infinitive to positive infinative
clc; clear all; close all; n = (-Inf,Inf) L = 1; rectn = rectangularPulse(-1,1,n/L); w = -8*pi:0.01:8*pi; for i = 1:num...

7 månader ago | 1 answer | 0

1

answer

Question


Plot the regular function and Fourier transform
syms x a b L n = [-10:0.01:10]; f = inline('rectangularPulse(a,b,x)','x') f_FT = (1/L)*fourier(f); Hi guys, I am confused ab...

7 månader ago | 1 answer | 0

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answer

Question


Color the the image
Hi all, How can I do the script for the 2 input images to produce the output image?

7 månader ago | 2 answers | 0

2

answers

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