how to read an image with name given by the user?

I was looking for how to use the imread function to read an image which is a webcam shot so I use imwrite with a dialog box which the user gives the name of the image but for further processing I do not know how to read that image that changes according to the user modify his name.

[KSSV]

imread is used to read the image....._imwrite_ is used to write data into image.....what is your question?

Answer 1

[Walter Roberson]

[filename, pathname] = uiputfile('*.*', 'Save as');
if ~ischar(filename); return; end             %user cancelled
fullname = fullfile(pathname, filename);
imwrite(TheSnapshotArray, fullname);

Now use the techniques described at http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.28s.29.3F

Answer 2

[Image Analyst]

Get your snapshot however, like...

snapshot = getsnapshot();

Then use imsave().

Or you can use imputfile() if you don't have the Image Processing Toolbox

% Get the name of the file that the user wants to save.
% Note, if you're saving an image you can use imsave() instead of uiputfile().
startingFolder = userpath % Or "pwd" or wherever you want.
defaultFileName = fullfile(startingFolder, '*.*');
[baseFileName, folder] = uiputfile(defaultFileName, 'Specify a file');
if baseFileName == 0
  % User clicked the Cancel button.
  return;
end
fullFileName = fullfile(folder, baseFileName)
imwrite(snapshot, fullFileName);