Welcome to Android Central! Those are images that some of your installed apps use. The problem is that the app developer neglected to add a ".nomedia" file in the directory where the app saves those images. Determine which directory those images are saved to, and use a file manager app to create a blank text file called ".nomedia" (without the quotes, but with the leading period), which should hide the images in that directory from the system when it scans for images to add to the gallery database.
02-11-2019 10:59 AM