how to show the images of a uint8 format cell array through a montage in a single image?

Hi! i've this cell array that contains my images :

a =

    1×14 cell array

    Columns 1 through 5

      {246×272×3 uint8}    {246×272×3 uint8}    {246×272×3 uint8}    {246×272×3 uint8}    {246×272×3 uint8}

    Columns 6 through 10

      {246×272×3 uint8}    {251×280×3 uint8}    {240×264×3 uint8}    {232×248×3 uint8}    {232×264×3 uint8}

    Columns 11 through 14

      {232×264×3 uint8}    {168×200×3 uint8}    {238×272×3 uint8}    {232×256×3 uint8}

and i want to show them all in one figure with montage i've tried this

for i = 1 : 14
montage(a{i:14} ,'Size',[2 7])
end
but everytime opens a new figure and i want to show all my 14 figures all together in one figure window
thanks

Answer 1

[Ashish Uthama]

If you have a newer version, try using IMTILE to create the individual montage for each cell array element. Air code:

 mim = {}
 for i = 1 : 14
   mim{i} = imtile(a{i:14} ,'Size',[2 7])
 end
 montage(mim)

[federica pasquali]

Thank you very much!

Answer 2

[Image Analyst]

Try using it this way (untested by me):

img = montage(a,'Size',[2 7])
imshow(img);

In other words, don't use a for loop and accept the output of montage into a new variable rather than ignoring it.

[federica pasquali]

it says to me:

img = montage(a,'Size',[2 7 ]) 
Error using images.internal.getImageFromFile (line 7)
The specified filename is not a string.

Error in montage>getImageFromFilenames (line 357)
    [I, map] = images.internal.getImageFromFile(fileNames{idx});

Error in montage>getImagesFromFiles (line 371)
[img,map] = getImageFromFilenames(fileNames,1);

Error in montage>parse_inputs (line 243)
    [I,cmap] = getImagesFromFiles(varargin{1});

Error in montage (line 114)
[I,cmap,mSize,indices,displayRange,parent]

[Jan]

@federica pasquali: What is your a then? If it is the same cell array as in the original question, the error message would be confusing.

[federica pasquali]

a it's the same cell array i've put in the original question

[Jan]

@federica pasquali: According to the documentation, such an "imageList" is a valid input:

 imagelist — Set of images
 n-by-1 or 1-by-n cell array

 Set of images, specified as an n-by-1 or 1-by-n cell array of
 numeric matrices of size m-by-n or m-by-n-by-3.

 Data Types: single | double | int16 | uint8 | uint16 | logical | cell

So please post a minimal working example, which reproduces the error message. Replace the image data by some rand calls.

Answer 3

[Image Analyst]

Use the 'parent' input option to place the resulting montage image where you want. For example:

% Specify the folder where the files live.
myFolder = fileparts(which('cameraman.tif')); % Determine where demo folder is (works with all versions).
% Check to make sure that folder actually exists.  Warn user if it doesn't.
if ~isdir(myFolder)
  errorMessage = sprintf('Error: The following folder does not exist:\n%s', myFolder);
  uiwait(warndlg(errorMessage));
  return;
end
% Get a list of all files in the folder with the desired file name pattern.
filePattern = fullfile(myFolder, '*.png'); % Change to whatever pattern you need.
theFiles = dir(filePattern);
numImages = length(theFiles);
allImages = cell(1, numImages);
for k = 1 : length(theFiles)
  baseFileName = theFiles(k).name;
  fullFileName = fullfile(myFolder, baseFileName);
  fprintf(1, 'Now reading %s\n', fullFileName);
  % Now do whatever you want with this file name,
  % such as reading it in as an image array with imread()
  imageArray = imread(fullFileName);
  imshow(imageArray);  % Display image.
  drawnow; % Force display to update immediately.
  allImages{k} = imageArray;
end
% Create the montage:
fprintf('Done reading in images.  Now building %d by %d montage...\n', rows, rows);
rows = ceil(sqrt(numImages));
mImage = montage(allImages, 'Size', [rows, rows], 'Parent', gca);
caption = sprintf('Montage of %d images', numImages);
title(caption, 'FontSize', 15);
fprintf('Done reading in images.  Now building montage...\n');