Perceptual video hashing based on the Achlioptas´s random projections

A perceptual video hashing function maps the perceptual content of a video into a fixed-length binary string called the perceptual hash. Perceptual hashing is a promising solution to the content-identification and the content-authentication problems. The projections of image and video data onto a subspace have been exploited in the literature to get a compact hash function. We propose a new perceptual video hashing algorithm based on the Achlioptas´s random projections. Simulation results show that the proposed perceptual hash function is robust to common signal and image processing attacks.