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Deblurring image with deconvolution
I have a picture 'image.jpg' that is blurred with function sin(x+y). How can I deblur it with deconvolution?

environ 6 ans il y a | 1 réponse | 0

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Question


How can I clear the noise from a picture
Assume that a picture is multiplied by the noise sin(Ax+By). how can I clear the noise using deconvolution?

environ 6 ans il y a | 1 réponse | 0

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Where is the problem with my code. it never ends !!
What is the problem with the following code? It calculates the exponential coefficients fo fourier series of periodic functio...

environ 6 ans il y a | 1 réponse | 0

1

réponse

Question


creating function matlab code
How can write a function DFT(x) (in terms of jw) such that for the given discrete signal x[n]: <</matlabcentral/answers/uploa...

environ 6 ans il y a | 1 réponse | 0

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Error: Conversion to logical from sym is not possible.
Why I get the error in title? syms x h myconv myconv=0; h=0; x(n)=(1/2^(-n+1))*(heaviside(n+2)-heaviside(n-2)); ...

plus de 6 ans il y a | 1 réponse | 0

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why I get error using stem?
I tried this code to stem the convolution of two discrete time signals x and h without using conv function. but I get error e...

plus de 6 ans il y a | 1 réponse | 0

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Question


why I'm getting error with symsum?
I have tried this code to calculate energy and power of discrete time functions. but I get errors. how can I fix it? syms ...

plus de 6 ans il y a | 1 réponse | 0

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Question


Calculating energy and power of a signal
I tried this code to calculate energy and power of the input function f(x). but I get error. how can I fix it? syms x y z e...

plus de 6 ans il y a | 2 réponses | 0

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réponses

Question


why is my plot shows nothing?
why is my plot shows nothing? syms w w=-1*10*pi:0.005:10*pi; plot(w,sqrt(w.^2+w.^6)/(1+w.^4),'b');

plus de 6 ans il y a | 3 réponses | 0

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réponses

Question


how can I write a function y(n) in terms of function x(n)?
I run this code and I get error. (the error is for function y which contains function x in its defenition). how can i fix this e...

plus de 6 ans il y a | 2 réponses | 0

2

réponses

Question


Showing data values on markers in figure
When I run: x=0.4:3.6; x1=[.4 1 1.4 2 2.4 3 3.6]; y1=[17.25 33.6 36.72 37.2 36.8 36.75 32.7]; plot(x1,y1,'Marker','s...

plus de 6 ans il y a | 1 réponse | 1

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Question


Plotting dirac delta function's spectrum
I used the following code to plot the spectrum of some functions. but it doesn't work for the function dirac(t-t0) at t0=0. How ...

plus de 6 ans il y a | 1 réponse | 0

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Question


Error using plot ; spectrum of function
Why I get error using the following code? syms t w; syms g h; g=fourier(exp(-1*(t^2))); h=abs(g); w=-10.1:10.1; plot...

plus de 6 ans il y a | 2 réponses | 0

2

réponses

Question


Polar : ERROR: Data must be numeric, datetime, duration or an array convertible to double.
In this code I want to enter the function f(r) in terms of 'r' and then plot its figure with polarplot and calculate grad(f(r)) ...

environ 7 ans il y a | 1 réponse | 0

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Question


Error: The size of X must match the size of U or the number of columns of U.
What's the problem with this code? when I run it the following Error occurs: Error using quiver The size of X must match ...

environ 7 ans il y a | 2 réponses | 0

2

réponses

Question


How to use gradient?
what is the problem with the following code? f=input('enter function: ','s') [DX,DY] = -gradient(f); f = str2func(['@...

environ 7 ans il y a | 2 réponses | 0

2

réponses

Question


Error using contour: Z must be at least a 2x2 matrix.
What's the problem with the following code? f=input('enter function: ','s'); f = str2func(['@(x,y)' vectorize(f)]); [...

environ 7 ans il y a | 1 réponse | 0

1

réponse

Question


ERROR: Z must be a matrix, not a scalar or vector.
What's the problem with the following code? syms x y; f=input('enter function: ','s'); f = symfun(eval(f), [x y]); [...

environ 7 ans il y a | 1 réponse | 0

1

réponse