can't read the path image

clear;
clear all;
for jndex=1:20

if(jndex==1)
wwww = 'S1';
elseif(jndex==2)
wwww = 'S2';
elseif(jndex==3)
wwww =  'S3';
elseif(jndex==4)
wwww =  'S4';
elseif(jndex==5)
wwww =  'S5';
elseif(jndex==6)
wwww =  'S6';
elseif(jndex==7)
wwww =  'S7';
elseif(jndex==8)
wwww =  'S8';
elseif(jndex==9)
wwww =  'S9';
elseif(jndex==10)
wwww =  'S10';
elseif(jndex==11)
wwww =  'S11';
elseif(jndex==12)
wwww =  'S12';
elseif(jndex==13)
wwww =  'S13';
elseif(jndex==14)
wwww =  'S14';
elseif(jndex==15)
wwww =  'S15';
elseif(jndex==16)
wwww =  'S16';
elseif(jndex==17)
wwww =  'S17';
elseif(jndex==18)
wwww =  'S18';
elseif(jndex==19)
wwww =  'S19';
elseif(jndex==20)
wwww =  'S20';
end
face1= wwww ;
K=12;   %the DCT block width
ind=0;
path=strcat('Olivetti Data\',face1,'\');
outputfile2=strcat(face1);
outputfileName2=strcat(path,outputfile2);
outputfileName3=strcat(outputfile2);
for iiii=1:10
%         
fileName1=strcat(num2str(iiii,'%2d'),'.TIFF'); 
outputfile1=strcat(num2str(iiii,'%2d'),'.feats');

fileName=strcat(path,fileName1);
outputfileName=strcat(path,outputfile1);
%Extract features using DCT
%filename = ['user001-' num2str(iiii,'%02d') '.TIFF'];
X= imread(fileName1);
Xg=rgb2gray(X);
Xg=im2double(Xg);
Jg = dct2(Xg);
jg=im2col(Jg,[K K],'distinct');   %if K=12 this gives a vector length 144
bg = jg(:,1);
% Extract features using DWT and GLCM
x = double(X);
m = size(X,1);
n = size(X,2);
signal1 = X(:,:);
[cA1,cH1,cV1,cD1] = dwt2(signal1,'db4');
[cA2,cH2,cV2,cD2] = dwt2(cA1,'db4');
[cA3,cH3,cV3,cD3] = dwt2(cA2,'db4');
DWT_feat = [cA3,cH3,cV3,cD3];
% Apply PCA to reduce dimensionality
G = pca(DWT_feat);
% Check dimensionality reduction
whos DWT_feat
whos G
g = graycomatrix(G);
stats = graycoprops(g,'Energy');

Energy = stats.Energy;
sprintf('Energy is %g%%',Energy)

Feat=[bg; G ;Energy];
L = length(D);

ind=ind+1;
Data(ind,1:L)=D(1:L);

end
save(outputfileName3,'face1','-ASCII');
end

the error message

Error using imread (line 349)
File "Olivetti Data\1.TIFF" does not exist.

Error in Features_s1 (line 65)
X= imread(filename);

please anybody can help me i can't solve this error

[Image Analyst]

http://www.mathworks.com/matlabcentral/answers/13205#answer_18099

And make sure 1.tiff is on your computer in the Olivetti Data folder. You might use fullfile() to create the entire full/complete path name to the file.