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首页> 外文会议>International conference on material and manufacturing technology >Multiple Watermarks Embedding Simultaneously to Identify Image Status based on Fractional Fourier Transform
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Multiple Watermarks Embedding Simultaneously to Identify Image Status based on Fractional Fourier Transform

机译：基于分数阶傅里叶变换的多个水印同时嵌入以识别图像状态

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摘要

A new method of multiple watermarks embedding simultaneously to identify image status based on once and twice discrete fractional Fourier transform (DFRT) is presented.Random series watermark, chirp watermark and annotation watermark are embedded simultaneously in fractional Fourier transform domain to identify digital tamper detection, scanning detection, duplicate detection.According to the extracting situation of three kinds of watermarks from an image and the twice DFRT amplitude spectrum, we can know whether the image is tampered, scanned or duplicated.It provides a convenient way to identify the status of the image and will be an all-sided and comprehensive anti-counterfeiting technology.
机译：提出了基于一次和两次离散分数阶傅里叶变换（DFRT）的同时嵌入多个水印来识别图像状态的新方法，将随机序列水印，线性调频水印和注释水印同时嵌入分数阶傅里叶变换域以识别数字篡改检测，扫描检测，重复检测根据图像中三种水印的提取情况和两次DFRT振幅谱，我们可以知道图像是否被篡改，扫描或重复，为识别图像状态提供了一种方便的方法形象，将是全方位，全面的防伪技术。

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