关键词: 图像盲取证, 旋转不变性, 奇异值分解, 径向矩, 复制粘贴伪造, 取证检测

Abstract: Existing algorithms have not enough ability to detect the copy move forgery. In order to improve the accurate of the current algorithms, the new detection is proposed by constructing the circles replacing the traditional ways which are based on the square. The seven characterizes are constructed according to singular value decomposition. The dictionary-ordering method is applied for saving the time-consuming. Using main rotation angle based on the radial moment and the proportion of constraint remove the error mark. Experimental result shows that circle structure can solve pixels mismatching perfectly. The radial moment is applied to improve the accuracy of detection. Meanwhile seven characterizes are robust for post-processing, such as JPEG compression and additive noise.

Key words: blind image evidence obtain, rotation invariant, singular value decomposition, radial moment, copy move forgery, evidence obtain detection