MATLAB: I want to sharp image so plz send equation of h(t) to sharp image

equatio. of sharpningImage Processing Toolbox

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Try this high boost filter:

kernel = [-1,-1,-1; -1,17,-1; -1,-1,-1]/9;
sharpenedImage = conv(double(grayImage), kernel, 'same');
imshow(sharpenedImage, []);

If you want something more specific to your needs then please provide a better question. A message body of "x" just doesn't provide enough information for a quality answer.

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MATLAB: How to plot an impulse response h(t) sampled with fs

Hi,

for me your code is running (made some assumptions and a small edit at the plot):

% I assume that s1...s4 are scalars and take some fantasy values,
% since you did not tell us something about them i use:
s1 = 0.01;
s2 = 0.02;
s3 = 0.03;
s4 = 0.005;
k1 = (s1*s2*s3*s4)/(s1-s2)/(s1-s3)/(s1-s4); %residues
k2 = (s1*s2*s3*s4)/(s2-s1)/(s2-s3)/(s2-s4);
k3 = (s1*s2*s3*s4)/(s3-s1)/(s3-s2)/(s3-s4);
k4 = (s1*s2*s3*s4)/(s4-s1)/(s4-s2)/(s4-s3);
deltat = 4e-4;
t = 0.1:deltat:100;
ha =  (k1*exp(s1*t) + k2*exp(s2*t) + k3*exp(s3*t) + k4*exp(s4*t));
figure(3) % plot of ha
% Better visibility of the plot line:
plot(t, ha,'-b', 'LineWidth',2)
grid on

Best regards

Stephan

MATLAB: I want draw x(t) h(t) y(t) in just one plot window

The problem is that you need to not change ‘t’ in the convolution plot. This looks correct to me:

y=Ts*conv(x,h,'same');          % Use The ‘same’ Option
plot(t,y,'G');

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Related Solutions

MATLAB: How to plot an impulse response h(t) sampled with fs

MATLAB: I want draw x(t) h(t) y(t) in just one plot window

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