In order to protect medical image information,this paper presents a new algorithm of medical volume data digital watermarking based on Legendre chaotic neural network.It integrates Legendre chaotic neural network,three-dimensional discrete Fourier transformation and zero-watermarking.On the one hand, a novel Legendre chaotic neural network is used to generate a chaotic sequence with a pseudo-random sequenc for scrambling the original watermark image.On the other hand,zero-watermarking is constructed in the three-dimensional discrete Fourier transforming domain of medical volume data.The simulation results show that the digital watermarking algorithm not only has good robustness,but also good security and confidentiality.%为了保护医学图像信息,提出一种新的基于Legendre混沌神经网络的医学体数据数字水印算法,将Legendre混沌神经网络、三维离散傅里叶变换和零水印有机地结合在一起.一方面,使用一种新型的Legendre混沌神经网络产生具有伪随机性的混沌序列进行置乱原始水印图像;另一方面,在医学体数据的三维离散傅里叶变换域上构造零水印,以提高数字水印的抗攻击能力.仿真结果表明,该数字水印算法不仅具有很好的鲁棒性,而且具有很好的安全性和保密性.
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