Toward perceptual metrics for video watermark evaluation
STEFAN S. WINKLER, Elisa Drelie Gelasca, Touradj Ebrahimi · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2003
Assessing and comparing the performance of watermarking algorithms is difficult. The visibility of the watermark is an important aspect in this process. In this paper, we propose two metrics for evaluating the visual impact of video watermarks. Based on several different watermarking algorithms and video sequences, we identify the most prominent impairments as spatial noise and temporal flicker. We design the corresponding measurement algorithms and corroborate their performance through subjective experiments.