How can we superimpose more than 2 images?

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Hina Ismail 2016-3-14

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评论： Image Analyst 2016-3-16

采纳的回答： Image Analyst

For e.g; imshowpair(Image1,image2); can be use to superimpose 2 images. What if I have 10 images?

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Hina Ismail 2016-3-14

image.png

Please have a look the image. Similarly I want to see edge difference of all images. Hope my question is clear now. Thanks once again

Adam 2016-3-15

编辑：Adam 2016-3-15

You need to be clear as to what you are aiming to do, independent of the method you will use to do it.

The difference of two images is clear and easy to define. As soon as you add a 3rd image this is no longer the case.

How do you mathematically define the difference of 3 images, let alone 10 images?

Once you have answered that then what you want to do is trivial because you don't need imshowpair, you simply apply the maths yourself and use imshow on the compound result.

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Image Analyst 2016-3-14

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在 MATLAB Online 中打开

Average them

sumImage = double(image1)+ double(image2)+ double(image3)+ double(image4) + ...... etc.
meanImage = sumImage / numberOfImages;

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Hina Ismail 2016-3-14

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编辑：Hina Ismail 2016-3-14

image.png

Hi Guys,

Thanks for your response. The attached figure is the edge detection of two images, where I can see the difference of edges. Similarly, I have 10 images how can I show it in the same image?

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Hina Ismail 2016-3-15

Another question. Is there anyway I can show the calculated edge difference of each image? May be by calculating difference pixels?

Image Analyst 2016-3-16

It looked like your edges are in different places, so exactly what does the "edge difference" mean? You can just subtract the edge images and that will make sense if the edges are in the same place but just have different strengths, but if they are in different locations, then what does that mean?

If you want to threshold the images and assign each binary image to a different value, then you can simply add them together and apply a colormap with label2rgb().

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