getting error as " Undefined function 'exp' for input arguments of type 'uint8'." can someone help me resolve this
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asim asrar
le 21 Jan 2020
Modifié(e) : Image Analyst
le 21 Jan 2020
clc;
clear all;
close all;
I = imread('pluginfile_page-0001.jpg');
I = rgb2gray(I);
figure(1)
imshow(I);
I = imresize(I,[256 256]);
sigma = 1;
sig_s=1;
sig_r=1;
halfwid = sigma * 3;
halfwid = 1;
[xx, yy] = meshgrid(-halfwid:halfwid, -halfwid:halfwid);
Gg=1/16*[1 2 1;2 4 2; 1 2 1];
%Gg = exp(-(xx .^ 2 + yy .^ 2) / (2 * sigma ^ 2));
[M,N]=size(I);
modifyI=uint8((zeros(size(I)+2)));
%COPY THE ORIGINAL IMAGE MATRIX TO THE PADDED MATRIX
for x=1:size(I,1)
for y=1:size(I,2)
modifyI(x+1,y+1)=I(x,y);
end
end
figure(2);
imshow(modifyI);
%LET THE WINDOW BE AN ARRAY
%STORE THE 3-by-3 NEIGHBOUR VALUES IN THE ARRAY
%SORT AND FIND THE MIDDLE ELEMENT
Gf_num1=0;
Gf_den1=0;
Igy=uint8(conv2(modifyI,Gg,'same'));
figure(4);
imshow(Igy);
for i= 2:size(modifyI,1)-1
for j=2:size(modifyI,2)-1
for x=-1:1
for y=-1:1
%window(inc)=modifyI(i+x-1,j+y-1)
Gr = exp(-(abs(Igy(i+x,j+y)-modifyI(i,j)))^2/2*sig_r^2);
%Gr = exp(-((abs((Igy(i+x,j+y)-modifyI(i,j)))^2)/2*sig_r^2));
Gs=exp(-(((i+x)-i)^2+((j+y)-j)^2)/2*sig_s^2);
Gf_num = Gs*Gr*Igy(i+x,j+y);
Gf_num1=Gf_num1+Gf_num;
Gf_den=Gs*Gr;
Gf_den1 = Gf_den+Gf_den1;
end
end
Gfg(i-1,j-1) = Gf_num1 / Gf_den1;
end
end
%Gfg1 =im2uint8(Gfg);
% Gfg=uint8(Gfg);
figure(3);
imshow(Gfg);
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Image Analyst
le 21 Jan 2020
If it doesn't like uint8, then cast it to double
I = double(rgb2gray(I));
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