Muhammad asked . 2020-09-30

How to load an image to a figure using uigetfile/imread?

Novice coder here with a question that I am certain there will be an easy answer to - it just escapes me at the moment...

I am simply trying to display an image that I select from my PC's location, in a figure for further analysis. I actually have the analysis code working, but the problem I am having is that when I use uigetfile to provide the 'file look-up', I can navigate to the file, get the figure to launch, but the image then doesn't write to the figure. My code thus far is:

[filename, pathname] = uigetfile(...    
    {'*.jpg; *.JPG; *.jpeg; *.JPEG; *.img; *.IMG; *.tif; *.TIF; *.tiff, *.TIFF','Supported Files (*.jpg,*.img,*.tiff,)'; ...
    '*.jpg','jpg Files (*.jpg)';...
    '*.JPG','JPG Files (*.JPG)';...
    '*.jpeg','jpeg Files (*.jpeg)';...
    '*.JPEG','JPEG Files (*.JPEG)';...
    '*.img','img Files (*.img)';...
    '*.IMG','IMG Files (*.IMG)';...
    '*.tif','tif Files (*.tif)';...
    '*.TIF','TIF Files (*.TIF)';...
    '*.tiff','tiff Files (*.tiff)';...
    '*.TIFF','TIFF Files (*.TIFF)'},...    
    'MultiSelect', 'on');

% Error check - if no filename there is an error
if isequal(filename,0)
    error(' Load Error: No files selected! Load cancelled.')
else

end

% launch the figure box
figure

imagefilename = imgfile(filename,pathname);
c = imread(imagefilename);
image(c)
axis image
grid on

I'm certain the problem is the bit after I launch the figure, but I have tried several different combinations of syntax, but just cant get it right.

matlab , image processing, uigetfile/imread?

Expert Answer

Kshitij Singh answered . 2024-12-21 16:29:06

I think you want fullfile() instead of imgfile().

% Have user browse for a file, from a specified "starting folder."
% For convenience in browsing, set a starting folder from which to browse.
startingFolder = 'C:\Program Files\MATLAB';
if ~exist(startingFolder, 'dir')
  % If that folder doesn't exist, just start in the current folder.
  startingFolder = pwd;
end
% Get the name of the file that the user wants to use.
defaultFileName = fullfile(startingFolder, '*.*');
[baseFileName, folder] = uigetfile(defaultFileName, 'Select a file');
if baseFileName == 0
  % User clicked the Cancel button.
  return;
end
fullFileName = fullfile(folder, baseFileName)
myImage = imread(fullFileName);
imshow(myImage);

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