TY - JOUR T1 - Video Integrity Verification and GOP Size Estimation via Generalized Variation of Prediction Footprint JF - IEEE Transactions on Information Forensics and Security Y1 - 2020 A1 - David Vázquez-Padín A1 - Marco Fontani A1 - Dasara Shullani A1 - Fernando Pérez-González A1 - Alessandro Piva A1 - Mauro Barni KW - B-frames KW - double compression detection KW - GOP size estimation KW - rate distortion optimization KW - video forensics AB -

The Variation of Prediction Footprint (VPF), formerly used in video forensics for double compression detection and GOP size estimation, is comprehensively investigated to improve its acquisition capabilities and extend its use to video sequences that contain bi-directional frames (B-frames). By relying on a universal rate-distortion analysis applied to a generic double compression scheme, we first explain the rationale behind the presence of the VPF in double compressed videos and then justify the need of exploiting a new source of information such as the motion vectors, to enhance the VPF acquisition process. Finally, we describe the shifted VPF induced by the presence of B-frames and detail how to compensate the shift to avoid misguided GOP size estimations. The experimental results show that the proposed Generalized VPF (G-VPF) technique outperforms the state of the art, not only in terms of double compression detection and GOP size estimation, but also in reducing computational time.

VL - 15 IS - 1 ER - TY - CONF T1 - Are you threatening me? Towards smart detectors in watermarking T2 - Media Watermarking, Security, and Forensics Y1 - 2014 A1 - Mauro Barni A1 - Pedro Comesaña A1 - Fernando Pérez-González A1 - Benedetta Tondi KW - adversarial signal processing KW - watermarking JF - Media Watermarking, Security, and Forensics PB - SPIE CY - San Francisco, CA, USA ER - TY - CONF T1 - Coping with the enemy: Advances in adversary-aware signal processing T2 - IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) Y1 - 2013 A1 - Mauro Barni A1 - Fernando Pérez-González JF - IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) CY - Vancouver, Canada UR - http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6639361 ER - TY - CONF T1 - Localization of Forgeries in MPEG-2 Video through GOP Size and DQ analysis T2 - IEEE International Workshop on Multimedia Signal Processing (MMSP) Y1 - 2013 A1 - Daniele Labartino A1 - Tiziano Bianchi A1 - Alessia De Rosa A1 - Marco Fontani A1 - David Vázquez-Padín A1 - Alessandro Piva A1 - Mauro Barni AB -

This work addresses forgery localization in MPEG-2 compressed videos. The proposed method is based on the analysis of Double Quantization (DQ) traces in frames that were encoded twice as intra (i.e., I-frames).  Employing a state-of-the-art method, such frames are located in the video under analysis by estimating the size of the Group Of Pictures (GOP) that was used in the first compression; then, the DQ analysis is devised for the MPEG-2 encoding scheme and applied to frames that were intra-coded in both the first and second compression. In such a way, regions that were manipulated between the two encodings are detected. Compared to existing methods based on double quantization analysis, the proposed scheme makes forgery localization possible on a wider range of settings.

 
JF - IEEE International Workshop on Multimedia Signal Processing (MMSP) CY - Pula (Sardinia), Italy U1 -

Top 10% Award

ER - TY - CONF T1 - Detection of video double encoding with GOP size estimation T2 - IEEE International Workshop on Information Forensics and Security (WIFS) Y1 - 2012 A1 - David Vázquez-Padín A1 - Marco Fontani A1 - Tiziano Bianchi A1 - Pedro Comesaña A1 - Alessandro Piva A1 - Mauro Barni AB -

Video forensics is an emerging discipline, that aims at inferring information about the processing history undergone by a digital video in a blind fashion. In this work we introduce a new forensic footprint and, based on it, propose a method for detecting whether a video has been encoded twice; if this is the case, we also estimate the size of the Group Of Pictures (GOP) employed during the first encoding. As shown in the experiments, the footprint proves to be very robust even in realistic settings (i.e., when encoding is carried out using typical compression rates), that are rarely addressed by existing techniques.

JF - IEEE International Workshop on Information Forensics and Security (WIFS) PB - IEEE CY - Tenerife, Spain ER - TY - JOUR T1 - Asymptotically Optimum Universal Watermark Embedding and Detection in the High-SNR Regime JF - IEEE Transactions on Information Theory Y1 - 2010 A1 - Pedro Comesaña A1 - Neri Merhav A1 - Mauro Barni KW - hypothesis testing KW - Neyman-Pearson KW - watermark detection KW - watermark embedding KW - watermarking VL - 56 ER - TY - CONF T1 - Asymptotically optimum embedding strategy for one-bit watermarking under Gaussian attacks T2 - Security, Steganography, and Watermarking of Multimedia Contents Y1 - 2008 A1 - Pedro Comesaña A1 - Neri Merhav A1 - Mauro Barni ED - Edward J. Delp ED - Ping W. Wong ED - Jana Dittmann ED - Nasir D. Memon JF - Security, Steganography, and Watermarking of Multimedia Contents T3 - Proc. of SPIE PB - SPIE CY - San Jose, CA, USA VL - 6819 ER - TY - CONF T1 - Putting Reproducible Signal Processing into Practice: A Case Study in Watermarking T2 - IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) Y1 - 2007 A1 - Mauro Barni A1 - Fernando Pérez-González A1 - Pedro Comesaña A1 - Guido Bartoli KW - data-hiding KW - watermarking JF - IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) CY - Honolulu, HW, USA VL - 4 ER - TY - JOUR T1 - Improving the performance of RDM watermarking by means of trellis coded quantisation JF - IEE Proceedings on Information Security Y1 - 2006 A1 - Andrea Abrardo A1 - Mauro Barni A1 - Fernando Pérez-González A1 - C. Mosquera KW - data-hiding KW - watermarking VL - 153 ER - TY - CONF T1 - Ensuring Gain Invariance in High-Rate Data-Hiding T2 - Security, Steganography, and Watermarking of Multimedia Contents Y1 - 2005 A1 - Fernando Pérez-González A1 - C. Mosquera A1 - Mauro Barni A1 - Andrea Abrardo ED - Edward J. Delp ED - Ping W. Wong KW - data-hiding KW - watermarking JF - Security, Steganography, and Watermarking of Multimedia Contents T3 - Proc. of SPIE PB - SPIE CY - San Jose, California, USA VL - 5306 ER - TY - CONF T1 - Fundamentals of data hiding security and their application to spread-spectrum analysis T2 - International Workshop on Information Hiding (IH) Y1 - 2005 A1 - Pedro Comesaña A1 - Luis Pérez-Freire A1 - Fernando Pérez-González ED - Mauro Barni ED - Jordi Herrera-Joancomartí ED - Stefan Katzenbeisser ED - Fernando Pérez-González KW - data-hiding KW - watermarking JF - International Workshop on Information Hiding (IH) T3 - Lecture Notes in Computer Science PB - Springer-Verlag Heidelberg CY - Barcelona, Spain VL - 3727 ER - TY - CONF T1 - Information-theoretic analysis of security in side-informed data hiding T2 - International Workshop on Information Hiding (IH) Y1 - 2005 A1 - Luis Pérez-Freire A1 - Pedro Comesaña A1 - Fernando Pérez-González ED - Mauro Barni ED - Jordi Herrera-Joancomartí ED - Stefan Katzenbeisser ED - Fernando Pérez-González KW - data-hiding KW - security KW - watermarking JF - International Workshop on Information Hiding (IH) T3 - Lecture Notes in Computer Science PB - Springer-Verlag Heidelberg VL - 3727 N1 - 6-8 June ER - TY - JOUR T1 - Rational Dither Modulation: a high-rate data-hiding method robust to gain attacks JF - IEEE Transactions on Signal Processing Y1 - 2005 A1 - Fernando Pérez-González A1 - C. Mosquera A1 - Mauro Barni A1 - Andrea Abrardo KW - data-hiding KW - watermarking VL - 53 N1 - Third supplement on secure media ER - TY - CONF T1 - The return of the sensitivity attack T2 - International Workshop on Digital Watermarking (IWDW) Y1 - 2005 A1 - Pedro Comesaña A1 - Luis Pérez-Freire A1 - Fernando Pérez-González ED - Mauro Barni ED - Ingemar J. Cox ED - Ton Kalker ED - H. J. Kim KW - data-hiding KW - watermarking JF - International Workshop on Digital Watermarking (IWDW) T3 - Lecture Notes in Computer Science PB - Springer-Verlag Heidelberg CY - Siena, Italy VL - 3710 ER - TY - CONF T1 - Rational Dither Modulation: a novel data-hiding method robust to value-metric attacks T2 - IEEE International Workshop on Multimedia Signal Processing Y1 - 2004 A1 - Fernando Pérez-González A1 - Mauro Barni A1 - Andrea Abrardo A1 - C. Mosquera KW - data-hiding KW - watermarking JF - IEEE International Workshop on Multimedia Signal Processing CY - Siena, Italy ER -