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Using contrastive learning to improve the performance of steganalysis schemes

2021-03-01 10:32:02
Yanzhen Ren, Yiwen Liu, Lina Wang
arXiv_AI
         
Abstract

To improve the detection accuracy and generalization of steganalysis, this paper proposes the Steganalysis Contrastive Framework (SCF) based on contrastive learning. The SCF improves the feature representation of steganalysis by maximizing the distance between features of samples of different categories and minimizing the distance between features of samples of the same category. To decrease the computing complexity of the contrastive loss in supervised learning, we design a novel Steganalysis Contrastive Loss (StegCL) based on the equivalence and transitivity of similarity. The StegCL eliminates the redundant computing in the existing contrastive loss. The experimental results show that the SCF improves the generalization and detection accuracy of existing steganalysis DNNs, and the maximum promotion is 2% and 3% respectively. Without decreasing the detection accuracy, the training time of using the StegCL is 10% of that of using the contrastive loss in supervised learning.

Abstract (translated)

URL

https://arxiv.org/abs/2103.00891

PDF

https://arxiv.org/pdf/2103.00891.pdf

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