Phát hiện ảnh giả mạo có các vùng được lấy mẫu tăng dựa trên phép biến đổi hiệu và lọc thông cao DWT
Abstract
In this paper, we present two methods for detecting image forgery that have areas are copied from the various images. The first method is based on difference transform for the 2 × 2 blocks and the second method is based on high pass filter of DWT (Discrete Wavelet Transform). Compared to some previous methods, proposed methods have lower computational complexity and can detect forgery areas more clearly. Experiments show that the method are more robust against some attacks such as rotation, scaling, add noise, JPEG compression, ...
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