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REVERSIBLE INFORMATION HIDING BASED ON HISTOGRAM SHIFTING FOR JPEG2000 IMAGES

机译:基于直方图转换的JPEG2000图像可逆信息隐藏

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摘要

As an important branch of information security, information hiding in images has been extensively studied in recent years. However, most schemes will introduce irreversible distortion to the original image. It is unallowable in some special applications such as legal imaging and medical imaging. So reversible information hiding deserves us to study. In addition, most existing information hiding schemes are for BMP images and JPEG images. There are few related schemes for JPEG2000 images. So it is very necessary for us to study reversible information hiding for JPEG2000 images. In this paper, we propose a reversible information hiding scheme for JPEG2000 compressed images. In the proposed scheme, high frequency subbands of the cover image are divided into blocks. In each block, the histogram generated by the quantized wavelet coefficients of the block is shifted to create gaps for embedding data. Experimental results show that the proposed scheme has satisfactory performance. Compared with other schemes, the proposed scheme has higher embedding capacity and better visual quality of the stego image.
机译:作为信息安全的重要分支,近年来,隐藏在图像中的信息得到了广泛的研究。但是,大多数方案都会给原始图像带来不可逆的失真。在某些特殊应用(例如法律成像和医学成像)中,这是不允许的。因此,可逆的信息隐藏值得我们研究。另外,大多数现有的信息隐藏方案是针对BMP图像和JPEG图像的。 JPEG2000图像的相关方案很少。因此,我们有必要研究JPEG2000图像的可逆信息隐藏。在本文中,我们提出了一种用于JPEG2000压缩图像的可逆信息隐藏方案。在提出的方案中,覆盖图像的高频子带被划分为块。在每个块中,将由该块的量化小波系数生成的直方图移位以创建用于嵌入数据的间隙。实验结果表明,该方案具有令人满意的性能。与其他方案相比,该方案具有更高的嵌入能力和较好的隐身图像视觉质量。

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