针对篡改造假图像中常用的模糊操作,提出了一种模糊篡改图像的盲鉴别算法.该方法首先根据图像的边缘特征对图像取对数运算,分离入射分量和反射分量；然后把同态滤波应用到小波域,对多尺度分解的高频信息和低频信息进行同态滤波处理；最后采用数学形态学运算对边缘进行定位,检测图像是否经过模糊篡改.实验表明,该算法能够有效地检测经过模糊篡改的图像,并能对模糊操作痕迹进行准确定位.%Blur operation is used mostly in the tamper false image.Therefore,a blind identification algorithm for blur tempter image is proposed.Firstly,the algorithm takes logarithm operation to image according to the image' s edge character,and separate incident components and reflection components; And then,homomorphism filter is applied to the wave field,and uses homomorphism filter to process the high frequency information and low frequency information which are obtained from multistage wave decomposition; Finally,the edge is located by using mathematical morphological operation,so the image is detected that it is the nature image or not.The experiments show that the algorithm can detect effectively the blur tampered image,and can located precisely the blur operation trace.
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