How to display multiple images (non indexed images) with different sizes in a row?

Hi

Say I have 3 images and they are not indexed images therefore they don't have X, map, they only have RGB values.

And these 3 images are of different sizes.

How do I display them in a row?

Answer 1

[gonzalo Mier]

I would use moon1, moon2 and moon3 as 3 images that can be different and with different size, but I will obtain them as

moon1 = imread('moon.tif');
moon2 = imread('moon.tif');
moon3 = imread('moon.tif');

If you want them to be plotted in the same row you can use subplot to create the sections in the figure and imshow to plot them as:

subplot(3,1,1);  imshow(moon1);
subplot(3,1,2);  imshow(moon2);
subplot(3,1,3);  imshow(moon3);

[Salad Box]

Is 'moon1' just a random variable like 'RGB1'?

If so I have already done it and for some unknown reason the two images with different sizes look exactly the same size when I used 'subplot'. So not sure subplot would deal with my problem.

[gonzalo Mier]

Yes, moon1 is just a random image as RGB1. subplot will resize the images to fill the space that you want to give them. If I want moon look 3 times bigger than moon3 and moon2 twice bigger than moon3, you can distribute your subplots as:

subplot(6,1,[1,2,3]);  imshow(moon1);
subplot(6,1,[4,5]);  imshow(moon2);
subplot(6,1,[6]);  imshow(moon3);

But you have to previously map the figure as you want. For more info look in subplot

Answer 2

[Image Analyst]

Have you tried imtile()?

[Salad Box]

Unfortunately I don't seem to have imtile function on my matlab. Not sure which toolbox it is in?

>> which imtile
'imtile' not found.

[gonzalo Mier]

imtile was introduced in matlab 2008b. Which version of matlab are you using?

[Salad Box]

I'm using R2016a on my laptop and R2018b on my desktop. None of them seem to have 'imtile'. I'm guessing whether 'imtile' is in some specific toolbox which I might not have it in my path.

[Image Analyst]

It's been in the Image Processing Toolbox since R2018b. Use "ver" to find out what toolboxes you have. Otherwise you might try montage().

[Salad Box]

I'm using R2018a and I do have the 'Image processing Toolbox' but 'imtile is not found'. Does anyone know why?

[Image Analyst]

Because 2018a came out in March 2018, while 2018b (which is the release where imtile first was introduced) came out in September 2018. So your version came out BEFORE the function was introduced. Why not just upgrade?

Or stitch them together, like

rgb3 = [rgbImage1, regImage2, rgbImage3];

They must all have the same number of rows. If not, figure out how many rows need to be added to the smaller ones and use padarray(). Or else use imresize() to make them all the same size.