A New Secure Image Transmission Technique via Secret-Fragment-Visible Mosaic Images by Nearly Reversible Color Transformations
A New Secure Image Transmission Technique via Secret-Fragment-Visible Mosaic Images by Nearly Reversible Color Transformations
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DOI：
10.1109/tcsvt.2013.2283431
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发表时间：
2014-04
影响因子：
8.4
通讯作者：
Ya-Lin Lee;Wen-Hsiang Tsai
中科院分区：
文献类型：
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作者：
Ya-Lin Lee;Wen-Hsiang Tsai
提出了一种新的图像安全传输技术，该技术将给定的大容量秘密图像自动转换为大小相同的秘密碎片可见的马赛克图像。通过将秘密图像分割成多个片段并将它们的颜色特征变换为目标图像的对应块的颜色特征，产生看起来与任意选择的目标图像相似并且可以用作秘密图像的伪装的马赛克图像。设计了巧妙的颜色变换技术，使秘密图像几乎无损地恢复出来。提出了一种通过记录未变换颜色空间中的色差来处理变换后像素颜色值中的溢出/下溢的方案。通过使用密钥的无损数据隐藏方案将恢复秘密图像所需的信息嵌入到所创建的马赛克图像中。良好的实验结果表明了该方法的可行性。
A new secure image transmission technique is proposed, which transforms automatically a given large-volume secret image into a so-called secret-fragment-visible mosaic image of the same size. The mosaic image, which looks similar to an arbitrarily selected target image and may be used as a camouflage of the secret image, is yielded by dividing the secret image into fragments and transforming their color characteristics to be those of the corresponding blocks of the target image. Skillful techniques are designed to conduct the color transformation process so that the secret image may be recovered nearly losslessly. A scheme of handling the overflows/underflows in the converted pixels' color values by recording the color differences in the untransformed color space is also proposed. The information required for recovering the secret image is embedded into the created mosaic image by a lossless data hiding scheme using a key. Good experimental results show the feasibility of the proposed method.