hi to all
Actually i m working on a project Shape measurement of 3-d objects by applying Fourier Transform Profilometry Technique.
Now in this i do hav a a fringe pattern equation of the formT
g(x, y) =3D a(x ,y) + c(x ,y)exp[2=F0 fox] + c*(x, y)exp[-2=F0ifox]
where, c(x, y) =3D =BD b(x ,y)exp[i =D6(x ,y)].
The FFT of the above equation with respect to x comes out to be
G(f, y) =3D A(f, y) + C(f-fo,y) + C*(f+fo, y)
NOW ACTUALLY I HAV TO FILTER OUT the unwanted variation a(x, y) for which i need to design a bandpassfilter usiing matlab. now i do require help for how to do this.
regards Saurabh