% Ex4_5

[H D]=lpfilter('gaussian',500,500,50,1);
H=fftshift(H);
mesh(H(1:10:500,1:10:500))
axis([0 50 0 50 0 1])
pause

view(0,70)
pause

view(-25,0)
pause 

surf(H(1:10:500,1:10:500))
pause

shading interp;
pause



