Manipulación de Imágenes

FILTRO DE LA MEDIA

I =[25, 25, 25, 25, 25; 25, 128, 35, 35, 25; 25, 45, 35, 128, 25; 25, 25, 35, 25, 25]
[n,m]=size(I);
v = zeros(9,1);
for i=2:n-1
for j=2:m-1
v(1)= I(i,j);
v(2)= I(i-1,j);
v(3)= I(i-1,j+1);
v(4)= I(i,j-1);
v(5)= I(i,j);
v(6)= I(i,j+1);
v(7)= I(i+1,j-1);
v(8)= I(i+1,j);
v(9)= I(i+1,j+1);
sort(v)
I(i,j)=v(5)
end
end


FILTRO DE LA MEDIANA

I = [25, 25, 25, 25, 25; 25, 45, 35, 128, 25; 25, 45, 35, 35, 25; 25, 45, 35, 35, 25; 25, 25, 25, 25, 25]
[n,m]=size(I);
for i=2:n-1
for j=2:m-1
I(i,j)=fix((I(i-1,j-1)+I(i-1,j)+I(i-1,j+1)+I(i,j-1)+I(i,j)+I(i,j+1)+I(i+1,j-1)+I(i+1,j)+I(i+1,j+1))/9)
end
end

Aplicación de los Filtro de la Media y Mediana en imágenes.

1.- APLICANDO EL FILTRO DE LA MEDIA (En la matriz dada).

el código de la implementación en Scilab es:

M = [25, 25, 25, 25, 25;25,128,35,35,25;25,45,35,128,25;25,25,35,25,25]
[n,m]=size(M)
for i=2:n-1
for j=2:m-1
V = M(i-1:i+1,j-1)
V=[V,M(i-1:i+1,j)]
V=[V,M(i-1:i+1,j+1)]
sort(V)
M(i,j)=V(4)
end
end


2.- APLICANDO EL FILTRO DE LA MEDIANA(En la matriz dada)

el código de la implementación en Scilab es:

M = [25, 25, 25, 25, 25;25,45,35,35,35;25,45,35,35,25;25,45,35,35,25;25,25,25,25,25]
[n,m]=size(M)
for i=2:n-1
for j=2:m-1
M(i,j)=fix((M(i-1,j-1)+M(i-1+j)+M(i-1,j+1)+M(i,j-1)+M(i,j)+M(i,j+1)+M(i+1,j-1)+M(i+1,j)+M(i+1,j+1))/9)
end
end