Find unique images from a folder

I have a folder full of images of video frame sequences of same class of varying sizes of frame number extracted from a large video data. How can I find the N number of images of that are unique and not repetative? Where N will be smaller than the total number of image frames.

Answer 1

[Shadaab Siddiqie]

From my understanding you want to find set of unique images. Please refer retrieveImages and ssim. Although these functions find similar images you can use it to filter unique or different images.