A novel evaluation method for perceptual hash algorithm in authentication mode

摘要

Perceptual hash is an important research branch of multimedia security, while the evaluation of performance of aperceptual hash algorithm is not well studied so far. The traditional performance of a perceptual hash algorithm isrobustness and discriminability. Such evaluation criterion is not good enough to judge an algorithm, especially for aperceptual hash algorithm working in authentication mode. In this paper, anew evaluation method is proposed to evaluatean authentication oriented perceptual hash algorithm by the capability of distinguish the malicious tamper from contentpreserving operations. A new performance, Identical Perceptual Distance, is also defined to quantize the ability. Thethorough test on several representative published perceptual hash algorithms shows the feasibility of the proposedevaluation method.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.