Combining slices of image

Question

Rohit Kharat 2022-1-18

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https://ww2.mathworks.cn/matlabcentral/answers/1631495-combining-slices-of-image

回答： yanqi liu 2022-1-19

I have to combine two grayscale image with a RGB image. While combining I am facing the issue of different size of matrices and I do not want to use 'imtile' function. How can I approach these task?

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Walter Roberson 2022-1-18

In order for us to suggestions that are usable for you, you are going to need to tell us more about why imtile() is not suitable for your purpose.

DGM 2022-1-18

If you need to edge-concatenate two images, you will need to match their corresponding geometry. At that point, you can use basic concatenation (e.g. cat() or []).

In order to make their geometry compatible, you can:

resize one or both images (see imresize())
crop the larger image (see imcrop())
pad the smaller image (see padarray())

In order to make monochrome and RGB images match on dim3, you can either

expand the single-channel image (see repmat())
collapse the multichannel image (see rgb2gray())

That said, i'm only assuming you want to concatenate based on the mention of imtile(). As you don't want to use imtile(), I'm reluctant to recommend other tools that can directly do similar things; after all, if imtile() doesn't do what you want, maybe they don't either. If by "combine", you mean something other than concatenation, you'll have to clarify.

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