I am trying to understand the SSIM index to compare two images for similarity, but I am having difficulties understanding how it is done.
Therefore, I would like to ask, if someone can explain it step by step, possibly also using some images to visualize the process ?
That would be of great help !
What I have undertstood so far:
- I take two pictures
- I split picture 1 in N squared subpictures
- I split picture 2 in N squared subpictures at the same location as in picture 1
- I compute the SSIM index for each local subpicture
