【摘要】 复制-粘贴是一种常见的数字图像篡改技术,目前的复制-粘贴数字图像取证技术未考虑旋转和缩放攻击。文章提出了一种新的复制-粘贴数字图像取证方法,该方法选择了鲁棒的、抗旋转及抗缩放的图像Ga-bor特征,并结合量化的DCT系数进行图像块匹配,以检测篡改区域。实验结果表明,该方法具有较强的鲁棒性,可以抵御旋转、缩放攻击,同时也可以取得较好的检测准确率。更多还原

【Abstract】 Copy-move is a common digital image manipulation technique.Attacks such as rotation and scaling are not considered in current copy-move digital image forensic methods.A new copy-move detection method is proposed in this paper.Robust,anti-rotation and anti-scaling Gabor features are selected.Based on quantized DCT coefficients,image block matching algorithm is designed to detect the tampered block.Experimental results show that the method is robust enough to detect attacks such as rotation and scaling with high accuracy.更多还原