Detecting video and image files is crucial when reviewing your stored documents, with the objective of cleaning up any unwanted porn material. Porn from the internet is frequently in image form, and in many cases viewers of this kind of imagery keep a copy of the files in a hard disk directory so they are at hand. It is thus critical for internet cleaner software like this one to put aside adult images and other images, and show these in a useful way for the user of the application to use. Sorting out the files will involve analysis to discover if the images are of iterest. One important indicator is checking the ratio of skin colours in the image.

Then again, skin detection isn't the main factor because everyday images also contain similar color ranges to skin. Therefore if skin coloring is in fact present, several techniques can usually be done to test them in detail, to set apart the porn images from normal ones, such as pattern tests, exposure and contrast evaluation, and a great many besides. Images that are found during scanning are then organized and shown as thumbs so the operator can review them.