PhotoDNA is perceptual hashing algorithm for image-identification and content filtering technology widely used by online service providers. Although the design of the algorithm has never been publicly disclosed by its authors, a leaked software library that implements it became accessible through a repository on GitHub in 2021.
PhotoDNA is perceptual hashing algorithm for image-identification and content filtering technology widely used by online service providers. Although the design of the algorithm has never been publicly disclosed by its authors, a leaked software library that implements it became accessible through a repository on GitHub in 2021.
Source: Wikipedia "PhotoDNA" · CC BY-SA 4.0
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