Unable to determine file format and Ground truth error... Help

    disp('sparce disctonary processing. . ');

model = cell(1,5);
modelLow = cell(1,5);
DHigh = cell(1,5);
DLow = cell (1,5);
lamda =  0.025;
max_level= 1;
windowSize=5;
skipSize=1;

DictionarySize =100;
%%%%lena Train
dirNameTrain = '.\Train\';
% % outputName = '.\Results2\';
DTrain = dir(dirNameTrain); % check dir command, in matlab documentation

i=3;
ground_truth = [dirNameTrain DTrain(i).name];

patchSize = windowSize ^2;
 truth_img = imread(ground_truth);

    end

[Ameer Hamza]

Can you show the output of

disp(class(DTrain(3).name));
disp(DTrain(3).name);

[devang bhatt]

code attach here.. Help to solve this error..

Answer 1

[Walter Roberson]

You are blindly reading in everything in the directory, but your directory contains Thumbs.db as well as whatever content you are expecting. You should be making your dir() more specific.

[devang bhatt]

I attach my code here.. Please help me to make dir() more specific. I don't understand what to do..

[Walter Roberson]

Change

DTrain = dir(dirNameTrain); % check dir command, in matlab documentation

to

DTrain = dir(fullfile(dirNameTrain, '*.jpg')); % check dir command, in matlab documentation

[devang bhatt]

Thank you so much..:) This will help me..