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首页> 外文期刊>Journal of Computers >An Adaptive Reversible Image Watermarking Scheme Based on Integer Wavelet Coefficients
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An Adaptive Reversible Image Watermarking Scheme Based on Integer Wavelet Coefficients

机译:基于整数小波系数的自适应可逆图像水印方案

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—This paper presents an integer wavelet coefficients based reversible image watermarking scheme. A reversible image watermarking approach extracts the embedded watermarks from a watermarked image and recovers the watermarked image to the original image simultaneously. The proposed approach first applies the host image to 3-layered integer wavelet transform. Nine subimages are acquired from the 3-layered integer wavelet transform. Each subimage is then segmented to blocks of size 2L?2L, where L is determined by structure of the subimage. Then, reversible watermarks are embedded into differences between central ordered pixel and other pixels in each block. Largest difference in each block determines the embedded quantity in each difference. Experimental results show that the proposed adaptive block size scheme has high capacity and quality ratio. A better selection on subimage embedding is also provided.
机译:- 这篇论文呈现了基于整数基于的可逆图像水印方案。可逆图像水印方法从水印图像中提取嵌入的水印,并同时将水印图像恢复到原始图像。所提出的方法首先将主机图像应用于3层整数小波变换。从3层整数小波变换中获取九个子程。然后将每个子图分段为尺寸2L?2L的块,其中L由子图的结构确定。然后,嵌入可逆水印嵌入到每个块中的中央有序像素和其他像素之间的差异。每个块中的最大差异确定每个差异中的嵌入量。实验结果表明,所提出的自适应块尺寸方案具有高容量和质量比。还提供了对SubImage嵌入的更好选择。

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