数字图像区域复制-粘贴篡改检测分析

The Research on Detection of Image Region-duplication Forgery

针对同幅图像的区域复制-粘贴篡改,提出一种新的检测方法。该方法对待检测图像先用离散小波变换进行预处理,然后用截尾奇异值方法选取图像特征,对选取图像特征选择欧氏距离作为图像特征的相似性度量,并配合契比雪夫距离进行篡改定位。实验结果表明该算法能够有效检测复制粘贴篡改,并对复制区域旋转操作具有较强的鲁棒性。

Against copy-paste tampering with the image of the area,put forward a new detection method. The approach on testing images using discrete wavelet transform to preprocess first,and then selecting image features using truncated singular value method,the selected image feature selection Euclidean distance as similarity measure image characteristics,and cooperate with the deed,distance to tamper with the positioning than snow.Experimental results show that the algorithm can effectively detect copying and pasting tampered with,and to copy regional rotation operation with strong robustness.