TY  - EJOU
AU  - Li, Jian 
AU  - Lv, Yang 
AU  - Ma, Bin 
AU  - Yang, Meihong 
AU  - Wang, Chunpeng 
AU  - Zheng, Yang 

TI  - Video Source Identification  Algorithm Based on 3D Geometric  Transformation
T2  - Computer Systems Science and Engineering

PY  - 2020
VL  - 35
IS  - 6
SN  - 

AB  - Digital video has become one of the most preferred ways for people to share information. Considering people tend to release illegal information in anonymous way, the 
problem of video source identification attracts more and more attention as an important part of multimedia forensics. The Photo-Response Non-Uniformity (PRNU) 
based algorithm shows to be a promising solution for the problem of video source identification. However, it is necessary to make a geometric transformation for testing 
PRNU noise to align it with the reference noise, due to the effect of video stabilization. This paper analyzes the three-dimensional (3D) characteristics of camera jitters 
and studies how to estimate the parameters of 3D geometric transformation when aligning PRNU noises between reference and test. In the algorithm design, quaternion 
is used to transform PRNU noise image in 3D space, and 15 rotation axes of 3D space are estimated for experiments. 162 videos of 9 smart phones were tested. Most of 
the videos got a higher peak to correlation energy (PCE) value by using this algorithm, and showed better results when applied to videos with complex texture. The 
experiment part also records the geometric transformation parameters of the PRNU noise which need to map from image domain to video domain.
KW  - Video forensics; Photo-Response Non-Uniformity (PRNU) noise; video source identification; video stabilization

DO  - 10.32604/csse.2020.35.513