how can i browse an image in gui

how can i browse an dicom image in matlab gui???

Answer 1

[Chandra Kurniawan]

Hi, Usama

Here I give you sample code with GUIDE.

First, you need to create your GUI.

Type 'guide' in command window, and select 'blank GUI'

Then design your GUI. Your GUI must contains Axes, Pushbutton, and Edit as shown in the picture bellow

And type this code at 'pushbutton1_Callback'

function pushbutton1_Callback(hObject, eventdata, handles)
handles.output = hObject;
[fn pn] = uigetfile('*.dcm','select dicom file');
complete = strcat(pn,fn);
set(handles.edit1,'string',complete);
I = dicomread(complete);
imshow(I,[]);
guidata(hObject, handles);

I hope this clear.

[Usama Javed]

I dont know what the hell is wrong with set(handles.edit1,'string',complete);

still its giving an error... :(

Following are the errors arising... I shall be thankful if u help me to solve these errors...

??? Reference to non-existent field 'edit1'.

Error in ==> BrowseButton>btnbrowse_Callback at 105

set(handles.edit1,'string',complete);

Error in ==> gui_mainfcn at 96

feval(varargin{:});

Error in ==> BrowseButton at 42

gui_mainfcn(gui_State, varargin{:});

Error in ==> @(hObject,eventdata)BrowseButton('btnbrowse_Callback',hObject,eventdata,guidata(hObject))

??? Error while evaluating uicontrol Callback

[Usama Javed]

oo i got it...

i changed the tag of edit text... it was my own mistake... thank u soo much...

now its working fine...

[Usama Javed]

i have uploaded another question regarding to showing dicom image... can u plz help me in that...???

[Chandra Kurniawan]

Yes,

just show me the page.

[Usama Javed]

O thanks God and thanks to u Chandra... got my answer after reviewing the code... thank u soo much...

[Usama Javed]

why cant i apply rgb2gray to dicom image... its giving an error...

>> I = dicomread('\C:\Users\Asad\Documents\MATLAB\1.dcm');

>> I=rgb2gray(I);

??? Error using ==> rgb2gray>parse_inputs at 82

MAP must be a m x 3 array.

Error in ==> rgb2gray at 35

X = parse_inputs(varargin{:});

[Chandra Kurniawan]

Of course.

Because size of your DICOM image is m x n (2 dimentional).

The rgb2gray function takes m x n x o (3 dimentional) size.

[Usama Javed]

so is there any other way to apply rgb2gray on dicom image...

[Chandra Kurniawan]

Please tell me the size of your dicom image by typing

size(I) in command window.

[Usama Javed]

512 * 512

[Usama Javed]

hi,

can you tell me how can i get that address from edit text box.

[Michal Urban]

Hi, i have one problem, when i use this code , still not working , can u someone help me? I have 4 files dicom data and i need code for showing this data.

[Image Analyst]

Michal, post your code and image in a new thread.

Answer 2

[Junaid]

Dear Usman,

If I understand you correct. You mean how to browse image from GUI right?

If yes then it is as follow:

a=imgetfile;

where a is your image.

[Usama Javed]

actually i m trying to read an image from browse control.. i-e

there will be an edit text control and a push button(browse Button).. the path will set in that edit text box so that i can read an image at that path

Answer 3

[Chandra Kurniawan]

[fn pn] = uigetfile('*.dcm','select dicom file');
complete = strcat(pn,fn);
set(handles.edit1,'string',complete);
I = dicomread(complete);

[Usama Javed]

??? Undefined function or variable 'handles'.

Error in ==> Untitled at 3

set(handles.edit1,'string',complete);

[Chandra Kurniawan]

Hi,

Here, I Just give you little hint.

Of course you cannot apply my code directly to your script.

You need to do your own modification.

Answer 4

[Image Analyst]

Try MAGIC:

http://www.mathworks.com/matlabcentral/fileexchange/24224

Description

This GUI will help the novice user get up to speed very quickly on using GUI-based applications. Everything is laid out in a very simple Step 1, Step 2, Step 3, etc. layout. It is a very good starting point for a typical image analysis application. This application uses GUIDE to do the user interface design, and has most of the basic controls such as buttons, listboxes, checkboxes, radio buttons, scrollbars, etc. It allows the user to select a folder of images, select one or more images and display them, to select a series of options, and to individually or batch process one or more images. The user can optionally apply a mask (region of interest) to the image so that only the area within the mask will be analyzed. The results are optionally sent to Excel. In this demo, I do some very basic particle sizing but in use, the user would replace that simple demo code in the function AnalyzeSingleImage() with their own code. Works with Windows or Unix since paths are all forward slashes. Requires the Image Processing Toolbox to do the simple particle sizing demo, but if you delete that demo code before using it, then the IP toolbox would not be required and it would still demonstrate the basic GUI-based file processing functionality.

Answer 5

[Seema]

Hi Chandra, I executed the above code & it's working for me. But could u plz tell me which line in ur code enables the image selected to be displayed in the axes. Actually I'm not able to understand the meaning of the line "handles.output = hObject; [fn pn] = uigetfile('*.dcm','select dicom file'); "

Regards, Seema

[Image Analyst]

The "getfile()" line gets the filename (a string). imread() reads in the image from disk into a variable in your program. The "imshow()" line is the line that does the actual displaying of the image.

Answer 6

[msp]

how to get path of uigetfile?

[Image Analyst]

You posted this as an answer to Usama's question, but it's obviously not an answer to his question. So, if it's supposed to be a comment or followup question on one of the actual answers, whose answer are you commenting on? If you intended this to be a brand new discussion question of your own, then please post it as a new question, not as an answer.

Answer 7

[Muthukumar Thangam]

% Try this for browse and load jpg images
  % code
function pushbutton1_Callback(hObject, eventdata, handles)
handles.output = hObject;
[fn pn] = uigetfile('*.jpg','select jpg file');
complete = strcat(pn,fn);
set(handles.edit1,'string',complete);
I = imread(complete);
imshow(I,[]);
guidata(hObject, handles);

[kiran]

pls say me how to display the selected image? and also how to save the image to a variable?

[Image Analyst]

imshow() displays it. imread() "saves" the image from disk to a variable in your program.

[kiran]

i think you have misunderstood my question.

if true
  % code
function pushbutton1_Callback(hObject, eventdata, handles)
handles.output = hObject;
[fn pn] = uigetfile('*.jpg','select jpg file');
complete = strcat(pn,fn);
set(handles.edit1,'string',complete);
I = imread(complete);
imshow(I,[]);
guidata(hObject, handles);
end

this is the code i used to browse the image when i click the pushbutton on the gui. now when i click the browse button i need to select an image from the drive, i need to display the image and i need to save the image to a variable so that i will be able to use it when i click the convert button.

[Image Analyst]

I did answer the original questions about how to display (use imshow) and how to put the image into a variable (use imread). For your new question about how to access the image when you click a different push button, see the FAQ http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.28s.29.3F

Answer 8

[Thirunavukkarasu]

What must be the size of the axes to load the .jpg image? how can we relate the size of the image with the size of the axes ?

[Image Analyst]

They're independent. Your image will scale to fit whatever size your axes is.