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Image data hiding scheme based on spline interpolation and OPAP

机译：基于样条插值和OPAP的图像数据隐藏方案

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摘要

In this paper we propose an image steganography method based on the spline interpolation. Firstly, digital images are often transmitted over the Internet which would arouse little suspicion. Secondly, the high correlation between pixels provides rich space for data embedding; in addition, optimal pixel adjustment procedure (OPAP) is employed to minimise the error between the input image and the output image in order to ameliorate the fidelity of the proposed steganography method. We propose image steganography methods in spatial domain by using a nearest neighbour, bilinear and bicubic spline interpolation technique, which can embed a large amount of secret data into images with imperceptible modification. The interpolation error, which is measured by distance between the maximum value and the predicted value, is used to embed the secret data. The experimental results show that the proposed schemes provide a larger payload and a good image quality.
机译：本文提出了一种基于样条插值的图像隐写方法。首先，数字图像经常通过互联网传输，这几乎不会引起人们的怀疑。其次，像素之间的高度相关性为数据嵌入提供了丰富的空间。此外，采用最佳像素调整程序（OPAP）可以最大程度地减少输入图像和输出图像之间的误差，以改善所提出的隐写方法的保真度。我们通过使用最近邻，双线性和双三次样条插值技术，提出了一种在空间域中的图像隐写方法，该方法可以将大量秘密数据嵌入到图像中，而不会进行明显的修改。通过最大值和预测值之间的距离测量的内插误差用于嵌入机密数据。实验结果表明，所提出的方案具有较大的有效载荷和良好的图像质量。

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