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| 1 | gauss = zeros(10,10); | |
| 2 | ||
| 3 | sigma = 3; | |
| 4 | ||
| 5 | for x=1:10 | |
| 6 | for y=1:10 | |
| 7 | ||
| 8 | ||
| 9 | gauss(x,y) = exp(-((x-6)*(x-6)+(y-6)*(y-6))/(2*sigma)); | |
| 10 | ||
| 11 | end | |
| 12 | end | |
| 13 | ||
| 14 | ||
| 15 | somagauss = sum(gauss); | |
| 16 | gauss = gauss/somagauss; | |
| 17 | ||
| 18 | // surf(gauss); | |
| 19 | ||
| 20 | gs=fftshift(gauss) | |
| 21 | gf=fft2(gs) | |
| 22 | ||
| 23 | ||
| 24 | m1=[0 0 0 0 0 0 0 0 0 0; | |
| 25 | 0 0 0 0 0 0 0 0 0 0; | |
| 26 | 0 1 1 1 1 1 1 1 0 0; | |
| 27 | 0 1 1 1 1 1 1 1 0 0; | |
| 28 | 0 1 1 0 0 0 1 1 0 0; | |
| 29 | 0 1 1 0 0 0 1 1 0 0; | |
| 30 | 0 1 1 1 1 1 1 1 0 0; | |
| 31 | 0 1 1 1 1 0 0 0 0 0; | |
| 32 | 0 1 1 1 1 0 0 0 0 0; | |
| 33 | 0 1 1 1 1 0 0 0 0 0]; | |
| 34 | ||
| 35 | ||
| 36 | m1f=fft2(m1) | |
| 37 | ||
| 38 | multi=gf.*m1f | |
| 39 | ||
| 40 | mfinal=mfft(multi,1,[10;10]) | |
| 41 | ||
| 42 | mreal = real(mfinal) |
