hello, i have problem using imread. i want to process 4 images in 4 different axes. but it says error using imread. here is the codes.

function buttondeteksi_Callback(hObject, eventdata, handles)
s = get(handles.edit1, 'String');
file = char(s);
[pathstr,name,ext] = fileparts(file);
img_path=[pathstr,name,ext];
addpath(img_path);

image1=imread(file,['\','1.bmp']);
[ci, cp, out] = thresh(image1,100,400);
axes(handles.axes1);
imshow(out);
setappdata(handles.edit1,'localImg',image1);
setappdata(handles.edit1,'IrisParam',ci);
setappdata(handles.edit1,'PupilParam',cp);

image2=imread(file, ['\','2.bmp']);
[ci, cp, out] = thresh(image2,100,400);
axes(handles.axes2);
imshow(out);
setappdata(handles.edit1,'localImg',image2);
setappdata(handles.edit1,'IrisParam',ci);
setappdata(handles.edit1,'PupilParam',cp);

image3=imread(file, ['\','3.bmp']);
[ci, cp, out] = thresh(image3,100,400);
axes(handles.axes3);
imshow(out);
setappdata(handles.edit1,'localImg',image3);
setappdata(handles.edit1,'IrisParam',ci);
setappdata(handles.edit1,'PupilParam',cp);

image4=imread(file, ['\','4.bmp']);
[ci, cp, out] = thresh(image4,100,400);
axes(handles.axes4);
imshow(out);
setappdata(handles.edit1,'localImg',image4);
setappdata(handles.edit1,'IrisParam',ci);
setappdata(handles.edit1,'PupilParam',cp);
set(handles.buttonnormal,'Enable','on');

Answer 1

[Walter Roberson]

Due to a lack of documentation about the expected inputs and outputs, I had to make some guesses as to how the routine should work.

function buttondeteksi_Callback(hObject, eventdata, handles)
s = get(handles.edit1, 'String');
file = char(s);
[pathstr,name,ext] = fileparts(file);
img_path = pathstr;

image1 = imread( fullfile(pathstr, '1.bmp') );
[ci, cp, out] = thresh(image1,100,400);
axes(handles.axes1);
imshow(out);
setappdata(handles.axes1,'localImg',image1);
setappdata(handles.axes1,'IrisParam',ci);
setappdata(handles.axes1,'PupilParam',cp);

image2 = imread( fullfile(pathstr, '2.bmp') );
[ci, cp, out] = thresh(image2,100,400);
axes(handles.axes2);
imshow(out);
setappdata(handles.axes2,'localImg',image2);
setappdata(handles.axes2,'IrisParam',ci);
setappdata(handles.axes2,'PupilParam',cp);

image3 = imread( fullfile(pathstr, '3.bmp'));
[ci, cp, out] = thresh(image3,100,400);
axes(handles.axes3);
imshow(out);
setappdata(handles.axes3,'localImg',image3);
setappdata(handles.axes3,'IrisParam',ci);
setappdata(handles.axs3,'PupilParam',cp);

image4 = imread( fillefile( pathstr, '4.bmp') );
[ci, cp, out] = thresh(image4,100,400);
axes(handles.axes4);
imshow(out);
setappdata(handles.axes4,'localImg',image4);
setappdata(handles.axes4,'IrisParam',ci);
setappdata(handles.axes4,'PupilParam',cp);

set(handles.buttonnormal,'Enable','on');

[Glenn]

the inputs are 4 iris images that already loaded from a folder, this button is for detecting iris circle from that 4 images. i've tested ur codes, it says: Error using imread (line 349) File "F:\Skripsi\CASIA Iris Image Database (version 1.0)\002\1.bmp" does not exist.

Error in inputcitra>buttondeteksi_Callback (line 210) image1 = imread( fullfile(pathstr, '1.bmp') );

actually the 1.bmp file is located on "F:\Skripsi\CASIA Iris Image Database (version 1.0)\002\2\1.bmp

[Walter Roberson]

"the inputs are 4 iris images that already loaded from a folder"

No, if they were already loaded then there would be no need for imread()

At the time of the call, what is the value of the edit1 String property, and where are the four files located?

[Glenn]

the files were loaded and displayed on four axes by another button, here is the button:

.

[Walter Roberson]

If the images were already loaded by using another button, then why are you wanting to load them here?

Other than the fact that what you displayed before is the result of imresize() of the images rather than the original images.

[Glenn]

no i dont want to load it again, i want to get the image from the axes and do detecting iris on it. so, what am i supposed to do?

[Walter Roberson]

data1 = get( findobj(handles.axes1, 'type', 'image'), 'CData')

[Glenn]

sorry, im a newbie, would you tell me where to put that codes or which codes that i should change?

[Glenn]

thanks, it works!! thank you sir!! mean alot to me.