Pengolahan Citra Digital

for y=1 : tinggi

for x=1 : lebar  

x2 = (x-n) * cosa + (y-m) * sina + n;      

       y2 = (y-m) * cosa - (x-n) * sina + m;    

if (x2>=1) && (x2<=lebar) && ...

           (y2>=1) && (y2<=tinggi)

           % Lakukan interpolasi bilinear

           p = floor(y2);

           q = floor(x2);

           a = y2-p;

           b = x2-q;