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A suboptimal embedding algorithm with low complexity for binary data hiding

机译:低复杂度的次优嵌入算法,用于隐藏二进制数据

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A novel suboptimal hiding algorithm for binary data based on weight approximation embedding, WAE, is proposed. Given a specified embedding rate, this algorithm exhibits an advantage of efficient binary embedding with reduced embedding complexity. The suboptimal WAE algorithm performs an embedding procedure through a parity check matrix. The optimal embedding based on maximal likelihood algorithm aims to locate the coset leader to minimize the embedding distortion. On the contrary, the WAE algorithm looks for a target vector close to the coset leader in an efficiently iterative manner. Given an linear embedding code C(n, k), the embedding complexity using the optimal algorithm is O(2k), while the complexity in the suboptimal WAE is reduced to O(sk) where s is the average iterations.
机译:提出了一种新的基于加权近似嵌入的二元数据次优隐藏算法。给定指定的嵌入率,该算法具有有效的二进制嵌入和降低的嵌入复杂度的优点。次优WAE算法通过奇偶校验矩阵执行嵌入过程。基于最大似然算法的最优嵌入旨在定位陪集首部以最小化嵌入失真。相反,WAE算法以有效的迭代方式寻找接近陪伴对象前导的目标向量。给定线性嵌入代码C(n,k),使用最佳算法的嵌入复杂度为O(2k),而次优WAE的复杂度降低为O(sk),其中s为平均迭代次数。

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