计算机工程与应用2012，Vol.48Issue(34)：166-170,5.DOI:10.3778/j.issn.1002-8331.1105-0163
基于JPEG块效应频域特性的合成图像检测
Composite images detection based on frequency characteristics of JPEG blocking artifacts
摘要
Abstract
The blocking artifacts of JPEG image produced during compression process exhibits as periodic peak of wave in power spectrum. The inconsistency of blocking artifacts induced by tampering JPEG image will weaken or eliminate the peak of wave. Utilizing the above principle, this paper proposes an algorithm to detect composite image based on the frequency characteristics of JPEG blocking artifacts. The noise of the detected image is removed to get noise. The noise is divided into overlapping blocks, and the blocking artifacts metrics of each block is calculated. The forgery regions are detected and located in terms of the metrics. Experimental results show that this algorithm performs better than the traditional algorithm based on the inconsistency of JPEG blocking artifacts in terms of various types of forgery with compositing different image format and tamper with small area.关键词
JPEG/合成图像检测/块效应Key words
JPEG/ detection composite image/ blocking artifacts分类
信息技术与安全科学引用本文复制引用
张卓阳,李峰,熊兵..基于JPEG块效应频域特性的合成图像检测[J].计算机工程与应用,2012,48(34):166-170,5.基金项目
国家自然科学基金项目(No.60973113) （No.60973113）
湖南省自然科学基金项目(No.09JJ3120). （No.09JJ3120）
