Title :
An investigation of an MPEG-4 embedded spatial digital watermark developed for tamper detection and characterization
Author :
Winne, D.A. ; Knowles, H.D. ; Bull, D.R. ; Canagarajah, C.N.
Author_Institution :
Centre for Commun. Res., Bristol Univ., UK
Abstract :
The widespread adoption of digital video techniques has generated a requirement for authenticity verification in applications such as criminal evidence, insurance claims and commercial databases. The paper investigates the performance, effectivity and efficiency of a spatial digital watermark designed for video authentication. The embedded watermark is estimated from the possible tampered frame with the use of a temporal filter and the motion information. The imperceptible digital stamp is robustly embedded prior to encoding (compression) and allows tamper characterisation of time-base attacks. The functionality of this system is evaluated within an MPEG-4 implementation.
Keywords :
data compression; image motion analysis; message authentication; parameter estimation; video coding; watermarking; MPEG-4 watermark; authenticity verification; commercial databases; criminal evidence; digital video techniques; embedded digital watermark; insurance claims; motion information; spatial digital watermark; tamper characterization; tamper detection; tampered frame; temporal filter; time-base attacks; video authentication; Authentication; Information filtering; Information filters; Insurance; MPEG 4 Standard; Motion estimation; Robustness; Spatial databases; Video compression; Watermarking;
Conference_Titel :
Consumer Electronics, 2003. ICCE. 2003 IEEE International Conference on
Print_ISBN :
0-7803-7721-4
DOI :
10.1109/ICCE.2003.1218809
