MATLAB: How to rescale the image using bilinear transform

bilinear transformImage Processing Toolboxrescale

i want to rescale the image using bilinear transform to user deffined memory size. plz help me for coding……

Best Answer

outputImage = imresize(inputImage, [desiredRows, desiredColumns], 'bilinear');

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scale = alpha;
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MATLAB: Designing IIR Filters using Bilinear Transform

so final and last version of the answer :


N = 2;
fc = [500 1000];
FS = 8000;
fcn = 2*fc/FS;
T = 1/FS;
freq = logspace(2,log10(FS/2.56));
% [ad, bd] = butter(N, fcn); % digital version
[a, b] = butter(N, 2*pi*fc, 's'); % analog version
figure(1); % allows log x 


[g,p]  = bode(a,b,2*pi*freq);grid
subplot(2,1,1),semilogx(freq,20*log10(g));
title('Frequency Response of the Filter')
subplot(2,1,2),semilogx(freq,p);grid
[ad, bd] = bilinear(a, b, FS);
figure(2); freqz(ad,bd,freq,FS);  % allows only lin x 
title('Frequency Response of the Filter')
figure(3); % allows log x 
[g,p]  = dbode(ad,bd,1/FS,2*pi*freq);
subplot(2,1,1),semilogx(freq,20*log10(g));grid
title('Frequency Response of the Filter')
subplot(2,1,2),semilogx(freq,p);grid
% axis([0 4000 -40 1]);
[ad, bd] = butter(N, fcn); % digital version
figure(4); % allows log x 
[g,p]  = dbode(ad,bd,1/FS,2*pi*freq);
subplot(2,1,1),semilogx(freq,20*log10(g));grid
title('Frequency Response of the Filter')
subplot(2,1,2),semilogx(freq,p);grid

Best Answer

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MATLAB: Please tell me about image interpolation.

MATLAB: Designing IIR Filters using Bilinear Transform

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