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Watermark Image Restoration Method Based on Block Hopfield Network
Conference proceeding   Peer reviewed

Watermark Image Restoration Method Based on Block Hopfield Network

Xiaohong Ma, Xin Li and Hualou Liang
ADVANCES IN NEURAL NETWORKS - ISNN 2009, PT 3, PROCEEDINGS, v 5553(3), pp 365-370
01 Jan 2009

Abstract

Computer Science Computer Science, Artificial Intelligence Computer Science, Theory & Methods Science & Technology Technology
In this paper, Hopfield network is introduced\ for the restoration of extracted watermark image which may be blurred due to file signal transfer or various signal processing operations. A novel codebook method is designed to reduce the storage space of the network and to increase the security. First, each watermark image is divided into adjacent and non-overlapped sub-block images and mapped into a codebook. Second, this codebook is encrypted by a chaotic sequence. During the process of watermark restoration, the codebook call be obtained via it secret key which is then Used to construct block weight matrix of the neural network for the restoration of the blurred watermark images. Simulation results demonstrate the excellent performance of the proposed method.

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Domestic collaboration
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Web of Science research areas
Computer Science, Artificial Intelligence
Computer Science, Theory & Methods
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