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Copy-move forgery detection in digital images using affine-SIFT

机译:使用仿射SIFT在数字图像中进行复制移动伪造检测

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摘要

Copy-move is a simple and effective operation for creating digital image forgeries, where an area of an image is copied and pasted to a different location in that image. Generally, a forger uses some affine transformations to make the changes visually intact. Most existing copy-move detection methods are not effective when copied regions are under geometrical distortions. In this paper, a new copy-move detection method based on affine scale invariant feature transform (ASIFT) is proposed, which is fully affine invariant and robust to transformations and deformation of copy-move regions. Our method starts by finding matched ASIFT keypoints and then estimates all pixels within the duplicated regions by using superpixel segmentation and morphological operations. Our experimental results demonstrate that the proposed method is efficient and powerful to detect copy-move regions, even when the copied region has undergone severe transformations and common post-processings like adding noise and blurring.
机译:复制移动是创建数字图像伪造品的简单有效的操作,其中复制图像的某个区域并将其粘贴到该图像中的其他位置。通常,伪造者使用一些仿射变换来使更改在视觉上完好无损。当复制的区域处于几何变形下时,大多数现有的复制移动检测方法均无效。提出了一种基于仿射尺度不变特征变换(ASIFT)的新的复制运动检测方法,该方法完全仿射不变,对复制运动区域的变形和变形具有鲁棒性。我们的方法首先找到匹配的ASIFT关键点,然后通过使用超像素分割和形态学运算来估计重复区域内的所有像素。我们的实验结果表明,即使复制区域经历了严重的变换和常见的后处理(如添加噪声和模糊处理),所提出的方法也能有效且强大地检测复制区域。

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