Robust Hidden Data Extraction Method for Scaling Attacks.

机译：一种用于扩展攻击的鲁棒隐藏数据提取方法。

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摘要

A product and process for extracting hidden data from a stego-image that has been subjected to scaling attacks are disclosed. The hidden data extraction method of the present invention retains the one-to-one mapping of the stego-image blocks to the corresponding blocks in the scaled image. When the stego-image is scaled down, the block size for extracting the hidden data is reduced proportionally. When the stego-image is scaled up, the block size for extracting the hidden data is increased proportionally. The total overall number of blocks of pixels to be examined is kept constant between the scaled image and the stego-image. The hidden data extraction method can be combined with any existing block-DCT based data hiding method to provide an overall method for dealing with scaling attacks. Both the extraction method and the combined method can be implemented in software and stored within a machine-readable medium.

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Subbalakshmi, K. P.; Amin, P. K.;
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年度 2005
页码 1-19
总页数 19
原文格式 PDF
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中图分类
关键词
Image processing; Data management; Extraction; Patent applications; Steganography; Digital systems; Scaling factors; Algorithms; Message processing; Information security; Pixels;

机译：图像处理;数据管理;提取;专利申请;隐写术;数字系统;缩放因子;算法;消息处理;信息安全;像素;

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Robust Hidden Data Extraction Method for Scaling Attacks.

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