Abstract
The detection of recaptured images plays a particular role in public security forensics. Although researches achieve some progress, low quality of image samples and long time consuming for feature extraction are still prominent problems. From the analysis to the photography process, we present two effective features for distinguishing high-resolution and high-quality recaptured images from LCD screens. One feature is the block effect and blurriness effect caused by JPEG compression, and the other feature is screen effect described by wavelet decomposition with aliasing-enhancement preprocessing. Experiments show that the proposed scheme obtains outstanding performances, which is fast and has higher discriminative accuracy.
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Acknowledgement
This work was supported in part by 973 Program (2011CB302204), National NSF of China (61332012, 61272355), PCSIRT (IRT 201206), Fundamental Research Funds for the Central Universities (2015JBZ002), Open Projects Program of NLPR (201306309).
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Li, R., Ni, R., Zhao, Y. (2016). An Effective Detection Method Based on Physical Traits of Recaptured Images on LCD Screens. In: Shi, YQ., Kim, H., Pérez-González, F., Echizen, I. (eds) Digital-Forensics and Watermarking. IWDW 2015. Lecture Notes in Computer Science(), vol 9569. Springer, Cham. https://doi.org/10.1007/978-3-319-31960-5_10
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DOI: https://doi.org/10.1007/978-3-319-31960-5_10
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