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It is called PhotoDNA and was developed by Microsoft. This is the same tech that is used to find child porn images even when people go to various lengths to pr
by evgen 9y ago
It is called PhotoDNA and was developed by Microsoft. This is the same tech that is used to find child porn images even when people go to various lengths to prevent simple hashing from being able to determine photo similarity. It works surprisingly well at the task from what I have seen/heard.
- b4lancesh33t 9y agoPhoto dna is just one of a class of algorithms called perceptual image hashes (there are also perceptual audio and video hash algorithms). They by no means invented the technique, just one particular branded implementation of it.