I would caution that duplicate software does what it says. It finds duplicate files, not duplicate images. Sometimes two different images can appear as the same file, (size, date, name) etc. So you need to be careful.
As cobra says more featured dupe softare will allow filtered matching on size and date, but that link above is ok as it only does byte matching. e.g. If I create 4 files as follows all with same byte size
Code:
C:\Downloads>echo a >> a
C:\Downloads>echo b >> b
C:\Downloads>echo c >> c
C:\Downloads>echo a >> d
then run that dupe software only files a and d are matched.