Use of Imagesc to show more than one image on a single figure

Hello,

please how can I use imagesc to display more than one image on a single figure using distinctive colors or what's the alternative to capture more than on image on a single figure.

Answer 1

[Oluwaseyi Aliu]

Thanks so much for your prompt response. The images were only divided into segments in the same figure; that is not what I want sir.

The attached showed exactly what I need; for example, red shows fluid 1, blue show fluid 2 and green show solid background.

Kindly check my attachment. Thanks in anticipation!

[Image Analyst]

OK, so image.PNG is your desired output image, but what are your component input images?

Try

rgbImage = cat(3, fluid1Image, solidBackground, fluid2Image);

[Oluwaseyi Aliu]

my input are n by n matrices for the three images

[Oluwaseyi Aliu]

with rgbImage = cat(3, fluid1Image, solidBackground, fluid2Image);nothing appears on the figure

[Walter Roberson]

You would need to imshow(rgbImage)

Note: watch out that your data range matches the datatype being used. If your arrays are double() then your data ranges should all be 0 to 1, but if your arrays are uint8() then your data ranges should be 0 to 255.

[Oluwaseyi Aliu]

Thanks so much!

Answer 2

[Image Analyst]

Try stitching them together if they're the same number of rows and color channels:

wideImage = [rgbImage1, rgbImage2];
imagesc(wideImage);

Use ind2rgb() if you have gray scale images that you want to pseudocolor:

rgbImage1 = ind2rgb(grayImage1, jet(256)); % Convert grayImage1 to color using the jet colormap.
rgbImage2 = ind2rgb(grayImage2, hsv(256)); % Convert grayImage2 to color using the hsv colormap.
wideImage = [rgbImage1, rgbImage2];
imagesc(wideImage);

[Image Analyst]

Try

rgbImage = cat(3, mat2gray(fluid1Image), mat2gray(solidBackground), mat2gray(fluid2Image));
imagesc(rgbImage);

This will scale all input images to the range 0-1 and put each into one of the color channels. It should be able to show up then.