CFA-Based Splicing Forgery Localization Method via Statistical Analysis
The color filter array of the camera is an effective fingerprint for digital forensics. Most previous color filter array (CFA)-based forgery localization methods perform under the assumption that the interpolation algorithm is linear. However, interpolation algorithms commonly used in digital camera...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2024-01-01
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| Series: | IET Signal Processing |
| Online Access: | http://dx.doi.org/10.1049/2024/9929900 |
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| _version_ | 1832559310612201472 |
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| author | Lei Liu Peng Sun Yubo Lang Jingjiao Li |
| author_facet | Lei Liu Peng Sun Yubo Lang Jingjiao Li |
| author_sort | Lei Liu |
| collection | DOAJ |
| description | The color filter array of the camera is an effective fingerprint for digital forensics. Most previous color filter array (CFA)-based forgery localization methods perform under the assumption that the interpolation algorithm is linear. However, interpolation algorithms commonly used in digital cameras are nonlinear, and their coefficients vary with content to enhance edge information. To avoid the impact of this impractical assumption, a CFA-based forgery localization method independent of linear assumption is proposed. The probability of an interpolated pixel value falling within the range of its neighboring acquired pixel values is computed. This probability serves as a means of discerning the presence and absence of CFA artifacts, as well as distinguishing between various interpolation techniques. Subsequently, curvature is employed in the analysis to select suitable features for generating the tampering probability map. Experimental results on the Columbia and Korus datasets indicate that the proposed method outperforms the state-of-the-art methods and is also more robust to various attacks, such as noise addition, Gaussian filtering, and JPEG compression with a quality factor of 90. |
| format | Article |
| id | doaj-art-ce7abf6216d9409fa63214d454101150 |
| institution | Kabale University |
| issn | 1751-9683 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Signal Processing |
| spelling | doaj-art-ce7abf6216d9409fa63214d4541011502025-02-03T01:30:22ZengWileyIET Signal Processing1751-96832024-01-01202410.1049/2024/9929900CFA-Based Splicing Forgery Localization Method via Statistical AnalysisLei Liu0Peng Sun1Yubo Lang2Jingjiao Li3College of Information Science and EngineeringDepartment of Public Security Information Technology and IntelligenceDepartment of Public Security Information Technology and IntelligenceCollege of Information Science and EngineeringThe color filter array of the camera is an effective fingerprint for digital forensics. Most previous color filter array (CFA)-based forgery localization methods perform under the assumption that the interpolation algorithm is linear. However, interpolation algorithms commonly used in digital cameras are nonlinear, and their coefficients vary with content to enhance edge information. To avoid the impact of this impractical assumption, a CFA-based forgery localization method independent of linear assumption is proposed. The probability of an interpolated pixel value falling within the range of its neighboring acquired pixel values is computed. This probability serves as a means of discerning the presence and absence of CFA artifacts, as well as distinguishing between various interpolation techniques. Subsequently, curvature is employed in the analysis to select suitable features for generating the tampering probability map. Experimental results on the Columbia and Korus datasets indicate that the proposed method outperforms the state-of-the-art methods and is also more robust to various attacks, such as noise addition, Gaussian filtering, and JPEG compression with a quality factor of 90.http://dx.doi.org/10.1049/2024/9929900 |
| spellingShingle | Lei Liu Peng Sun Yubo Lang Jingjiao Li CFA-Based Splicing Forgery Localization Method via Statistical Analysis IET Signal Processing |
| title | CFA-Based Splicing Forgery Localization Method via Statistical Analysis |
| title_full | CFA-Based Splicing Forgery Localization Method via Statistical Analysis |
| title_fullStr | CFA-Based Splicing Forgery Localization Method via Statistical Analysis |
| title_full_unstemmed | CFA-Based Splicing Forgery Localization Method via Statistical Analysis |
| title_short | CFA-Based Splicing Forgery Localization Method via Statistical Analysis |
| title_sort | cfa based splicing forgery localization method via statistical analysis |
| url | http://dx.doi.org/10.1049/2024/9929900 |
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