blending two images by Opencv

Question

I want to align two images of different sizes using Opencv, Indeed the function cvAddWeighted enables us to combine or blend two images of identical sizes which is not my case !

Answer 1

I'm guessing you have two images that need to be aligned. You'll also have the amount one image needs to be displaced by.

You can create a new image that can contain both the images after being displaced. This means, it would be the height of the original image+vertical displacement and its width would be width of original*2-horizontal displacement.

Then you can set ROIs on this image and copy images.