How to load CASIA Iris Version V1 database images..

Hello, CASIA Iris Image Database Version 1.0 (CASIA-IrisV1) includes 756 iris images from 108 eyes. For each eye, 7 images are captured in two folders...totally there are 108 folders(eyes) and each folder contains 2 sub-folders by name 1 (right eye) and 2 (left eye)..1st sub-folder contains 3 images and 2nd sub-folder contains 4 images... How can i load all the images from all the folders and sub-folders?

[Jyothi Alugolu]

i am sending 4 images out of 108 images..please have a look how the images are stored with file names...

[KSSV]

Refer this link: https://in.mathworks.com/matlabcentral/answers/32038-can-you-use-dir-to-list-files-in-subfolders

[Jyothi Alugolu]

that is not the question which i asked... i used recures.m file,but i am not getting all the subfolder images..

[KSSV]

How your question of accessing images in sub folders/ folders is different from what given in the link?

Answer 1

[Walter Roberson]

https://www.mathworks.com/help/vision/ref/imageset-class.html

imgSetVector = imageSet(imgFolder,'recursive')

After that you can use https://www.mathworks.com/help/vision/ref/imageset.read.html

Or you could create an imageDatastore, and use it; see for example https://www.mathworks.com/help/matlab/import_export/read-and-analyze-image-files.html

[Jyothi Alugolu]

The images of CASIA-IrisV1 are stored as:

$root path$/XXX_S_Y.bmp

XXX: the unique identifier of eye, range from 000 to 108.

S: the index of session, denotes the first session and the second session.

Y: the index of image in the same session. Range from 1 to 3 in the first session, 1 to 4 in the second session.

Therefore XXX_S_Y:bmp means the iris image with index Y in session S from eye XXX.

[Jyothi Alugolu]

i tried something like this:

close all;
clc;
count=0;
% the folder in which ur images exists
adata(1).f='00';
adata(2).f='0';
for i=1:108
    for k=1:4
       for j=1:2

               if(i<10)
                   input=strcat('C:\Users\admin\Desktop\Databases\Iris\CASIA-IrisV1\CASIA Iris Image Database (version 1.0)\',[adata(1).f,num2str(i)],'\',num2str(j),'\',[adata(1).f,num2str(i)],'_',num2str(j),'_',num2str(k),'*.bmp');
                   kk=strcat('C:\Users\admin\Desktop\Databases\Iris\CASIA-IrisV1\CASIA Iris Image Database (version 1.0)\',[adata(1).f,num2str(i)],'\',num2str(j),'\',[adata(1).f,num2str(i)],'_',num2str(j),'_',num2str(k));
               elseif(i>=10 && i<=99)
                   input=strcat('C:\Users\admin\Desktop\Databases\Iris\CASIA-IrisV1\CASIA Iris Image Database (version 1.0)\',[adata(2).f,num2str(i)],'\',num2str(j),'\',[adata(2).f,num2str(i)],'_',num2str(j),'_',num2str(k),'*.bmp');
                   kk=strcat('C:\Users\admin\Desktop\Databases\Iris\CASIA-IrisV1\CASIA Iris Image Database (version 1.0)\',[adata(2).f,num2str(i)],'\',num2str(j),'\',[adata(2).f,num2str(i)],'_',num2str(j),'_',num2str(k));
               else
                   input=strcat('C:\Users\admin\Desktop\Databases\Iris\CASIA-IrisV1\CASIA Iris Image Database (version 1.0)\',num2str(i),'\',num2str(j),'\',num2str(i),'_',num2str(j),'_',num2str(k),'*.bmp');
                   kk=strcat('C:\Users\admin\Desktop\Databases\Iris\CASIA-IrisV1\CASIA Iris Image Database (version 1.0)\',num2str(i),'\',num2str(j),'\',num2str(i),'_',num2str(j),'_',num2str(k));
              end
         end
      end

   end     
          srcFiles = dir(input);
            p=length(srcFiles);

[Walter Roberson]

projectdir = '$root path$';
dinfo = dir( fullfile(projectdir, '*.bmp') );
srcFiles = fullfile( projectdir, {dinfo.name} );

Unless, that is, there are other bmp files in the same directory. If there are other .bmp files in the same directory then,

projectdir = '$root path$';
dinfo = dir( fullfile(projectdir, '*.bmp') );
filenames = {dinfo.name};
matchpos = regexp(filenames, '^[01]\d\d_[12]_[1-4]\.bmp$');
wrong_file = cellfun( @isempty, matchpos );
filenames(wrong_file) = [];

srcFiles = fullfile(projectdir, filenames);

[Jyothi Alugolu]

i tried using recurse.m ...

code:

clc;    % Clear the command window.
workspace;  % Make sure the workspace panel is showing.
format long g;
format compact;

start_path = fullfile(matlabroot, 'bin');
%Ask user to confirm or change.
topLevelFolder = uigetdir(start_path);
if topLevelFolder == 0
  return;
end
%Get list of all subfolders.
allSubFolders = genpath(topLevelFolder);
%Parse into a cell array.
remain = allSubFolders;
listOfFolderNames = {};
while true
  [singleSubFolder, remain] = strtok(remain, ';');
  if isempty(singleSubFolder)
    break;
  end
  listOfFolderNames = [listOfFolderNames singleSubFolder];
end
numberOfFolders = length(listOfFolderNames);

%Process all image files in those folders.
for k = 1 : numberOfFolders
  %Get this folder and print it out.
  thisFolder = listOfFolderNames{k};
  fprintf('Processing folder %s\n', thisFolder);
  
  
  filePattern = sprintf('%s/*.bmp', thisFolder);
  baseFileNames = dir(filePattern);
  aa=natsortfiles({baseFileNames.name});

  
  
   numberOfImageFiles = length(aa);
  %Now we have a list of all files in this folder.
  
  if numberOfImageFiles >= 1
%    Go through all those image files.
    for f = 1 : numel(aa)   %%here aa is being 4 because 108th user 2nd folder contains 4 images
M1{f} = [imread(fullFileName)];   %%only 4 images are being stored..
  
      fullFileName = fullfile(thisFolder,aa{f});

end

      fprintf('\nProcessing image file %s\n', fullFileName);
                end

  fprintf('Folder %s has no image files in it.\n', thisFolder);
end

In the above code, variable aa is storing last user 2nd folder images and those images are being return by variable M..

But what i want is...108 folders with 7 images...so,finally M must have 756 images..(because 108 * 7 = 756);...

[Walter Roberson]

In the file structure you described, you only have one folder, not 108 folders.

If your files are all in the same folder, then after using the code I gave, after the line

srcFiles = fullfile(projectdir, filenames);

you can use

srcFiles = reshape(srcFiles, 7, []);

and then you would have a 7 x 108 cell array of strings that were file names.

[Jyothi Alugolu]

I am not getting....Can you please send me the code clearly...

[Walter Roberson]

projectdir = '$root path$';
dinfo = dir( fullfile(projectdir, '*.bmp') );
srcFiles = fullfile( projectdir, {dinfo.name} );
srcFiles = reshape(srcFiles, 7, []);

[Walter Roberson]

You would need to replace '$root path$' with the actual directory name. I copied that from your statement

$root path$/XXX_S_Y.bmp

This code will not be sufficient if your files are in folders. For example are your files really of the form

$root path$/XXX/S/Y.bmp

?

[Jyothi Alugolu]

The images of CASIA-IrisV1 are stored as: $root path$/XXX_S_Y.bmp XXX: the unique identifier of eye, range from 000 to 108. S: the index of session, denotes the first session and the second session. Y: the index of image in the same session. Range from 1 to 3 in the first session, 1 to 4 in the second session. Therefore XXX_S_Y:bmp means the iris image with index Y in session S from eye XXX. XXX=000:108 (t0tally 108 folders) And if S=1,THEN Y=1:3 (1st sub-folder i.e if S=1, then it contains 3 images If S=2, Then Y=1:4 (2nd Sub-folder i.e if S=2, then it contains 4 images).. so for a folder there will be 7 images(3 images in 1st subfolder and 4 images in 2nd subfolder)... Totally 108 folders..so there will be 108 * 7= 756 images from the database..i want load all those images and store in a cell array... I am sending you zip code with some images

[Walter Roberson]

Assuming that you have R2016b or later:

projectdir = '$root path$';
dinfo = dir( fullfile(projectdir, '*', '*', '*', '*.bmp') );
srcFiles = fullfile( {dinfo.folder}, {dinfo.name} );
srcFiles = reshape(srcFiles, 7, []);

[Jyothi Alugolu]

no, i am working in R2013a

[Walter Roberson]

Install subdir() from the File Exchange. Then

projectdir = '$root path$';
dinfo = subdir( fullfile(projectdir, '*', '*', '*', '*.bmp') );
srcFiles = reshape({dinfo.name}, 7, []);

[Jyothi Alugolu]

while running your code:

projectdir = 'C:\Users\admin\Desktop\Databases\Iris\CASIA-IrisV1\CASIA Iris Image Database (version 1.0)';   %%folder path
dinfo = subdir( fullfile(projectdir, '*', '*', '*', '*.bmp') );
srcFiles = reshape({dinfo.name}, 7, []);

i am having error:

Error using subdir (line 79)
Folder (C:\Users\admin\Desktop\Databases\Iris\CASIA-IrisV1\CASIA Iris Image Database (version 1.0)\*\*\*) not
found
Error in GOT1 (line 2)
dinfo = subdir( fullfile(projectdir, '*', '*','*', '*.bmp') );

[Walter Roberson]

projectdir = 'C:\Users\admin\Desktop\Databases\Iris\CASIA-IrisV1\CASIA Iris Image Database (version 1.0)';   %%folder path
paths_to_process = {projectdir};
srcFiles = {};

while ~isempty(paths_to_process)
  this_path = paths_to_process{1};
  paths_to_process(1) = [];

    img_info = dir( fullfile(this_path, '*.bmp') );
    these_images = fullfile( this_path, {img_info.name} );
    srcFiles = [srcFiles; these_images(:)];

    dir_info = dir( this_path );
    dir_info( ~[dir_info.isdir] ) = [];
    dir_info( ismember( {dir_info.name}, {'.', '..'} ) ) = [];
    if ~isempty(dir_info)
      these_folders = fullfile( this_path, {dir_info.name} );
      paths_to_process = [paths_to_process; these_folders(:)];
    end
  end

num_files = length(srcFiles);
basenames = cell(num_files,1);
for K = 1 : num_files
  [~, basenames{K}, ~] = fileparts(srcFiles{K});
end
[~, sortidx] = sort(basenames);
srcFiles = srcFiles(sortidx);

srcFiles = reshape(srcFiles, 7, []);

[Jyothi Alugolu]

thank you..it worked...

[monitor sky]

please i need project iris detection using artificial neural network

[Walter Roberson]

https://www.mathworks.com/matlabcentral/answers/?term=iris+neural

[Parul]

@Jyothi Alugolu can you please share the code for iris preprocessing on casia iris version 1 database

Answer 2

[Nimra Ibrar]

please i need code of iris recognization if any one help?

[Walter Roberson]

https://www.mathworks.com/matlabcentral/fileexchange/69484-iris-recognition-system