%0 Conference Paper %B Image Processing (ICIP), 2011 18th IEEE International Conference on %D 2011 %T Exploring compression effects for improved source camera identification using strongly compressed video %A Chuang,Wei-Hong %A Su,Hui %A M. Wu %K camera %K cameras;video %K coding; %K compression;computer %K compression;video %K estimation;photoresponse %K forensics;data %K identification;video %K non-uniformity;reliability;source %K PRNU %X 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. %B Image Processing (ICIP), 2011 18th IEEE International Conference on %P 1953 - 1956 %8 2011/09// %G eng %R 10.1109/ICIP.2011.6115855