Exploring compression effects for improved source camera identification using strongly compressed video
| Title | Exploring compression effects for improved source camera identification using strongly compressed video |
| Publication Type | Conference Papers |
| Year of Publication | 2011 |
| Authors | Chuang W-H, Su H, M. Wu |
| Conference Name | Image Processing (ICIP), 2011 18th IEEE International Conference on |
| Date Published | 2011/09// |
| Keywords | camera, cameras;video, coding;, compression;computer, compression;video, estimation;photoresponse, forensics;data, identification;video, non-uniformity;reliability;source, PRNU |
| Abstract | This paper presents a study of the video compression effect on source camera identification based on the Photo-Response Non-Uniformity (PRNU). Specifically, the reliability of different types of frames in a compressed video is first investigated, which shows quantitatively that I-frames are more reliable than P-frames for PRNU estimation. Motivated by this observation, a new mechanism for estimating the reference PRNU and two mechanisms for estimating the test-video PRNU are proposed to achieve higher accuracy with fewer frames used. Experiments are performed to validate the effectiveness of the proposed mechanisms. |
| DOI | 10.1109/ICIP.2011.6115855 |