隐写分析技术
隐写术
人工智能
模式识别(心理学)
JPEG格式
特征提取
Gabor滤波器
计算机科学
直方图
计算机视觉
嵌入
特征(语言学)
数学
图像(数学)
语言学
哲学
作者
Xiaocheng Song,Fenlin Liu,Ching-Nung Yang,Xiangyang Luo,Yi Zhang
标识
DOI:10.1145/2756601.2756608
摘要
Adaptive JPEG steganographic schemes are difficult to preserve the image texture features in all scales and orientations when the embedding changes are constrained to the complicated texture regions, then a steganalysis feature extraction method is proposed based on 2 dimensional (2D) Gabor filters. The 2D Gabor filters have certain optimal joint localization properties in the spatial domain and in the spatial frequency domain. They can describe the image texture features from different scales and orientations, therefore the changes of image statistical characteristics caused by steganography embedding can be captured more effectively. For the proposed feature extraction method, the decompressed JPEG image is filtered by 2D Gabor filters with different scales and orientations firstly. Then, the histogram features are extracted from all the filtered images.Lastly, the ensemble classifier is used to assemble the proposed steganalysis feature as well as the final steganalyzer. The experimental results show that the proposed steganalysis feature can achieve a competitive performance by comparing with the other steganalysis features when they are used for the detection performance of adaptive JPEG steganography such as UED, JUNIWARD and SI-UNIWARD.
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