# Tu Nguyen

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**Content Feed**

Question

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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answersQuestion

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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answersQuestion

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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answersQuestion

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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answerQuestion

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

### 2

answersQuestion

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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answerQuestion

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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answersQuestion

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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answerQuestion

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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answerQuestion

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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answersQuestion

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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answersQuestion

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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answersQuestion

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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answerQuestion

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

### 2

answersQuestion

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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answerQuestion

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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answerQuestion

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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answerQuestion

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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answersQuestion

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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answerQuestion

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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answerQuestion

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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answersQuestion

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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answerQuestion

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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answerQuestion

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

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answerQuestion

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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answerQuestion

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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answersQuestion

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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answerQuestion

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

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answerQuestion

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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answerQuestion

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