A Novel Approach for Copy-move Forgery Detection using Bilateral Filtering

Year 2020, Volume: 8 Issue: 2, 114 - 120, 30.04.2020

İşıl Karabey Aksakallı Nur Hüseyin Kaplan Uğur Kılıç İşın Erer

https://doi.org/10.17694/bajece.651435

Abstract

Digital image processing methods have a wide area of usage and their complexity is increasing, as well as the tampering methods. A widely used tampering method is copy-move forgery. In this study, a hybrid method combining the DCT and Bilateral filtering is developed. In this method, first overlapping blocks are obtained from the input image. Then, bilateral filtering and DCT of these blocks are multiplied to obtain the refined block features. The block features are scanned by a zig-zag process followed by a lexicographic sorting. Finally, a similarity detection by a predetermined threshold parameter is applied to detect the forgery. Both visual and quantitative results demonstrated that the proposed method can determine the copy-move forgery regions.

Keywords

copy-move forgery, bilateral filtering, zigzag scanning, DCT (Discrete Cosinus Transformation

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