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

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federica pasquali
federica pasquali 2018-10-16
评论： federica pasquali 2018-10-18
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

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采纳的回答

Ashish Uthama
Ashish Uthama 2018-10-17
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)

更多回答（2 个）

Image Analyst
Image Analyst 2018-10-16
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.
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Jan
Jan 2018-10-17
@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.

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Image Analyst
Image Analyst 2018-10-17
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');

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