An Effective Detection Method Based on Physical Traits of Recaptured Images on LCD Screens

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• 关键词：Recaptured images ; Block effect ; Blurriness effect ; Aliasing ; enhancement preprocessing ; Wavelet decomposition
• 刊名：Lecture Notes in Computer Science
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：9569
• 期：1
• 页码：107-116
• 全文大小：882 KB
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• 作者单位：Ruihan Li (17)
  Rongrong Ni (17)
  Yao Zhao (17)
  
  17. Institute of Information Science and Beijing Key Laboratory of Advanced Information Science and Network Technology, Beijing Jiaotong University, Beijing, 100044, China
  
• 丛书名：Digital-Forensics and Watermarking
• ISBN：978-3-319-31960-5
• 刊物类别：Computer Science
• 刊物主题：Artificial Intelligence and Robotics
  Computer Communication Networks
  Software Engineering
  Data Encryption
  Database Management
  Computation by Abstract Devices
  Algorithm Analysis and Problem Complexity
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1611-3349

文摘

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.