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Color-decoupled photo response non-uniformity for digital image forensics
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Li, Chang-Tsun and Li, Yue (2012) Color-decoupled photo response non-uniformity for digital image forensics. IEEE Transactions on Circuits and Systems for Video Technology, Vol.22 (No.2). pp. 260-271. doi:10.1109/TCSVT.2011.2160750
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WRAP_Li_TCSVT_4899_with_Figures_Tables.pdf - Accepted Version Download (672Kb) | Preview |
Official URL: http://dx.doi.org/10.1109/TCSVT.2011.2160750
Abstract
The last few years have seen the use of photo response non-uniformity noise (PRNU), a unique fingerprint of imaging sensors, in various digital forensic applications such as source device identification, content integrity verification and authentication. However, the use of a colour filter array for capturing only one of the three colour components per pixel introduces colour interpolation noise, while the existing methods for extracting PRNU provide no effective means for addressing this issue. Because the artificial colours obtained through the colour interpolation process is not directly acquired from the scene by physical hardware, we expect that the PRNU extracted from the physical components, which are free from interpolation noise, should be more reliable than that from the artificial channels, which carry interpolation noise. Based on this assumption we propose a Couple-Decoupled PRNU (CD-PRNU) extraction method, which first decomposes each colour channel into 4 sub-images and then extracts the PRNU noise from each sub-image. The PRNU noise patterns of the sub-images are then assembled to get the CD-PRNU. This new method can prevent the interpolation noise from propagating into the physical components, thus improving the accuracy of device identification and image content integrity verification.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Computer Science | ||||
Library of Congress Subject Headings (LCSH): | Image processing -- Digital techniques, Color filter arrays | ||||
Journal or Publication Title: | IEEE Transactions on Circuits and Systems for Video Technology | ||||
Publisher: | IEEE | ||||
Official Date: | February 2012 | ||||
Dates: |
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Volume: | Vol.22 | ||||
Number: | No.2 | ||||
Number of Pages: | 12 | ||||
Page Range: | pp. 260-271 | ||||
DOI: | 10.1109/TCSVT.2011.2160750 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Date of first compliant deposit: | 22 December 2015 | ||||
Date of first compliant Open Access: | 22 December 2015 | ||||
Funder: | Seventh Framework Programme (European Commission) (FP7) | ||||
Grant number: | 251677 (FP7) |
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