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Reversible data embedding for high quality images using interpolation and reference pixel distribution mechanism

机译:使用插值和参考像素分布机制对高质量图像进行可逆数据嵌入

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摘要

This paper proposes a reversible data hiding method based on image interpolation and the detection of smooth and complex regions in the cover images. A binary image that represents the locations of reference pixels is constructed according the local image activity. In complex regions, more reference pixels are chosen and, thus, fewer pixels are used for embedding, which reduces the image degradation. On the other hand, in smooth regions, less reference pixels are chosen, which increases the embedding capacity without introducing significant distortion. Pixels are interpolated according to the constructed binary image, and the interpolation errors are then used to embed data through histogram shifting. The pixel values in the cover image are modified one grayscale unit at most to ensure that a high quality stego image can be produced. The experimental results show that the proposed method provides better image quality and embedding capacity compared with prior works.
机译:提出了一种基于图像插值的可逆数据隐藏方法,以及对封面图像中平滑复杂区域的检测。代表参考像素位置的二进制图像是根据本地图像活动构造的。在复杂区域中,选择了更多参考像素,因此,更少的像素用于嵌入,从而减少了图像质量下降。另一方面,在平滑区域中,选择的参考像素较少,这增加了嵌入能力,而不会引起明显的失真。根据构造的二进制图像对像素进行插值,然后使用插值误差通过直方图平移来嵌入数据。封面图像中的像素值最多只能修改一个灰度单位,以确保可以生成高质量的隐身图像。实验结果表明,与现有技术相比,该方法具有更好的图像质量和嵌入能力。

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