图像隐写的混合曲波变换和最小有效位

Heba Mostafa, A. Ali, Ghada El Taweal
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引用次数: 14

摘要

本文提出了一种利用离散曲线变换和最低有效位(LSB)进行图像隐写的混合方法。该方法被称为混合曲波变换和最低有效位(HCTLSB)。在hcttlsb中,采用曲波去噪作为预处理步骤,以去除封面图像中的噪声。在利用LSB技术嵌入秘密数据之前,先对封面图像进行离散曲线变换。在该方法中调用曲线变换可以处理封面图像中的曲线不连续,从而获得更好的图像质量和鲁棒性。在得到的离散曲线系数图像上应用LSB技术,在不明显改变封面图像的情况下嵌入秘密数据。在10幅封面和秘密图像上测试了该方法的总体性能,并与两种基准方法进行了比较。实验结果表明,该方法是一种有前途的方法,可以获得比其他比较方法更好的结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hybrid Curvelet Transform and Least Significant Bit for image steganography
In this paper, we propose a new hybrid method for image steganography by using discrete curvelet transform and least significant bit (LSB). The proposed method is called Hybrid Curvelet Transform and Least Significant Bit (HCTLSB). In HCTLSB, the curvelet denoising is applied as a preprocessing step in order to remove the noise from the cover image. The cover image is transformed by applying the discreet curvelet transform before embedding the secret data by using LSB technique. Invoking the curvelet transform in the proposed method can handle the curve discontinuities in the cover image to obtain a better quality and robustness image. The LSB technique is applied on the obtained discrete curvelet coefficients image to embed the secret data without making noticeable changes to the cover image. The general performance of the proposed method is tested on 10 cover and secret images and compared against two benchmark methods. The experimental results show that the proposed method is a promising method and can obtain results better than the other compared methods.
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