朱婷鸽,李文瑄,来毅,刘颖

• 1:西安邮电大学通信与信息工程学院
• 2:西安邮电大学电子信息现场勘验应用技术公安部重点实验室

摘要(Abstract)：

针对传统图像篡改检测算法适用性有限，只能检测某一类篡改区域边缘平滑处理的问题，提出一种图像异常边缘篡改检测及可信度评价算法。采用非线性预测编码去除图像像素间的相关性，降低边缘像素点与其周围像素亮度差异，从而达到弱化边缘的目的。对处理后的图像利用边缘增强算法增强真实边缘。对比图像处理前后边缘变化，寻找异常边缘点，通过异常边缘概率计算图像可信度评价图像的真伪。实验结果表明，在未知伪造操作的情况下，该算法能够较好地检测出图像中的异常边缘，并给出图像的可信度评价。

关键词(KeyWords)： 异常边缘;非线性预测编码;边缘增强;可信度评价

Abstract:

Keywords:

基金项目(Foundation): 公安部科技强警项目(2019GABJC41);; 陕西省自然科学基础研究计划项目(2022JM-374)

作者(Author): 朱婷鸽,李文瑄,来毅,刘颖

DOI: 10.13682/j.issn.2095-6533.2022.01.013

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