Mean SSIM of the whole image. It is the mean value of the SSIM map. It is a similarity score between two images.
Similarity map of the two images. The dimensions of the map depend the windowSize option. Create a GREY image based on this map to visualize the similarity of the different regions of the image.
Mean SSIM of the whole image. It is the mean value of the SSIM map. It is a similarity score between two images.