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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?

6 years ago | 0 answers | 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?

6 years ago | 1 answer | 0

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answer

Question


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...

6 years ago | 1 answer | 0

1

answer

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...

6 years ago | 0 answers | 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)); ...

6 years ago | 0 answers | 0

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answers

Question


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...

6 years ago | 0 answers | 0

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answers

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 ...

6 years ago | 0 answers | 0

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answers

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...

6 years ago | 2 answers | 0

2

answers

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');

6 years ago | 3 answers | 0

3

answers

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...

6 years ago | 2 answers | 0

2

answers

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...

7 years ago | 1 answer | 1

1

answer

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 ...

7 years ago | 1 answer | 0

1

answer

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...

7 years ago | 2 answers | 0

2

answers

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)) ...

7 years ago | 1 answer | 0

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answer

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 ...

7 years ago | 2 answers | 0

2

answers

Question


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

7 years ago | 2 answers | 0

2

answers

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)]); [...

7 years ago | 1 answer | 0

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answer

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]); [...

7 years ago | 1 answer | 0

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answer