The toolbox includes two functions,
montage, that work with a specific type of multidimensional array
called a multiframe array. In this array, images, called frames in
this context, are concatenated along the fourth dimension. Multi-frame arrays are either
grayscale, binary, or indexed images, or
truecolor images, where p is the number of frames.
For example, a multiframe array containing five, 480-by-640 grayscale or indexed images would be 480-by-640-by-1-by-5. An array with five 480-by-640 truecolor images would be 480-by-640-by-3-by-5.
To process a multiframe array of grayscale images as an image sequence, you can
squeeze function to remove the singleton
You can use the
cat command to create a multiframe array. For
example, the following stores a group of images in a single array.
A = cat(4,A1,A2,A3,A4,A5)
You can also extract frames from a multiframe image. For example, if you have a
MULTI, this command extracts the third frame.
FRM3 = MULTI(:,:,:,3)
Note that, in a multiframe image array, each image must be the same size and have the same number of planes. In a multiframe indexed image, each image must also use the same colormap.