Steganalysis of Image with Adaptively Parametric Activation

• URL: http://arxiv.org/abs/2203.12843v1
• Date: Thu, 24 Mar 2022 04:44:51 GMT
• Title: Steganalysis of Image with Adaptively Parametric Activation
• Abstract summary: Adap-tive Parametric Activation Module is designed to reserve nega-tive embedding signal. A loss function based on contrastive learning is applied to overcome the limitations of cross-entropy loss by maximum inter-class distance.
• Score: 2.4201849657206496
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Steganalysis as a method to detect whether image contains se-cret message, is a crucial study avoiding the imperils from abus-ing steganography. The point of steganalysis is to detect the weak embedding signals which is hardly learned by convolution-al layer and easily suppressed. In this paper, to enhance embed-ding signals, we study the insufficiencies of activation function, filters and loss function from the aspects of reduce embedding signal loss and enhance embedding signal capture ability. Adap-tive Parametric Activation Module is designed to reserve nega-tive embedding signal. For embedding signal capture ability enhancement, we add constraints on the high-pass filters to im-prove residual diversity which enables the filters extracts rich embedding signals. Besides, a loss function based on contrastive learning is applied to overcome the limitations of cross-entropy loss by maximum inter-class distance. It helps the network make a distinction between embedding signals and semantic edges. We use images from BOSSbase 1.01 and make stegos by WOW and S-UNIWARD for experiments. Compared to state-of-the-art methods, our method has a competitive performance.

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