i am using matlab gui to capture pictures through webcam. i dont know how to save images with different names..

PLEASE HELP

my code is

function pbPreview_Callback(hObject, eventdata, handles)

vid = videoinput('winvideo', 1, 'YUY2_176x144');

% only capture one frame per trigger, we are not recording a video

vid.FramesPerTrigger = 1;

% output would image in RGB color space

vid.ReturnedColorspace = 'rgb';

% tell matlab to start the webcam on user request, not automatically

triggerconfig(vid, 'manual');

% we need this to know the image height and width

vidRes = get(vid, 'VideoResolution');

% image width

imWidth = vidRes(1);

% image height

imHeight = vidRes(2);

% number of bands of our image (should be 3 because it's RGB)

nBands = get(vid, 'NumberOfBands');

% create an empty image container and show it on axPreview

hImage = image(zeros(imHeight, imWidth, nBands), 'parent', handles.axPreview);

% begin the webcam preview

preview(vid, hImage);

% --- Executes on button press in pbCapture.

function pbCapture_Callback(hObject, eventdata, handles)

% hObject handle to pbCapture (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

vid = videoinput('winvideo', 1, 'YUY2_176x144');

vid.FramesPerTrigger = 1;

vid.ReturnedColorspace = 'rgb';

triggerconfig(vid, 'manual');

vidRes = get(vid, 'VideoResolution');

imWidth = vidRes(1);

imHeight = vidRes(2);

nBands = get(vid, 'NumberOfBands');

hImage = image(zeros(imHeight, imWidth, nBands), 'parent', handles.axPreview)

preview(vid, hImage);

 x=1;

 %while 1

% prepare for capturing the image preview start(vid);

% pause for 3 seconds to give our webcam a "warm-up" time

pause(3);

% do capture!

trigger(vid);

% stop the preview

stoppreview(vid);

% get the captured image data and save it on capt1 variable

capt1 = getdata(vid);

% now write capt1 into file named captured.png

imwrite(capt1, 'captured.png');

% just dialog that we are done capturing

warndlg('Done!');

function pushbutton3_Callback(hObject, eventdata, handles)

imshow('C:\Documents and Settings\Anita\My Documents\MATLAB\captured.png');

[Anuradha Singh]

every time i capture an image,previous one gets deleted.please tell me how to save images with different names every time i capture.and also tell me how to load any image by selecting from the list of captured images.

[Jan]

Please format your code properly. Important information should be added to the question and not provided in a comment. Meaningful tags are important also: almost all questions concern "matlab code" and your problem is not related to "matlab gui" as far as I understand. So please add meaningful tags, which helps to classify the question. Thanks.

[Image Analyst]

http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

Answer 1

[Jan]

Simply add a counter to the program:

counter = 0;
...
counter = counter + 1;
imwrite(capt1, sprintf('captured%.3d.png', counter));

Loading the image can be implemented easily also:

[fileName, filePath] = uigetfile('*.png');
if ~ischar(fileName)
  return;
end
Img = imread(fullfile(filePath, fileName));

See also: FAQ: Process sequence of files

[Anuradha Singh]

thnku..do you know how tect can be converted to speech form?

[Pradeep Ketkale]

Thankx @simon..it helped me too..