Created
September 11, 2014 04:13
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pseudomediana de 5 elementos - sin optimizar (necesita mejor tratamiento de bordes )
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function imgresult = pseudo_mediana( img ) | |
%pseudo_mediana filtro pseudo mediana | |
%Autor Nelson Duranhona 20140911 YYYYMMDD | |
[ M ,N ] = size(img); | |
imgresult = uint8(zeros(M,N)); | |
M = M-1; | |
N = N-1; | |
D_VERT = 1; | |
D_HOR = 1 ; | |
INIF = 1 + D_VERT; | |
INIC= 1 + D_HOR; | |
%test | |
cont= 0 ;NOcont=0; | |
for i=1:M | |
for j=1:N | |
%obtiene la vecindad | |
ve = imvencidad( img, [i , j], 1 , 1 ); | |
if size(ve , 2) < 3 || size(ve , 1) < 3 | |
imgresult(i, j) = img(i, j); | |
cont = cont + 1; | |
continue; | |
end | |
NOcont = NOcont + 1 ; | |
ve(1,1)=0 ; ve(3,3)=0 ; ve(3,1)=0; ve(1,3)=0; | |
% reduce a una dimension y ordena los valores | |
ve_ord = sort(reshape( ve , 1, []) ); | |
ve_ord = ve_ord( 5:9 ); %omite los 4 primeros elementos ( 0's) | |
a=ve_ord(1);b=ve_ord(2);c=ve_ord(3); d=ve_ord(4);e = ve_ord(5); | |
psmed = (1/2 * max( [min([a,b,c]), min([b,c,d]), min([c,d,e]) ])) + ... | |
(1/2 * min([max([a,b,c]),max([b,c,d]),max([c,d,e] )])); | |
imgresult(i, j) = psmed ; | |
end | |
end | |
disp('NOcont');disp(NOcont);disp('cont');disp(cont); | |
end | |
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