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中文摘要：
为保护数字图像版权和检测恶意篡改,实现高精度篡改定位,在充分挖掘图像特性的基础上,设计一种基于自适应半脆弱水印技术的图像篡改检测算法.算法根据感知特性将水印自适应嵌入到图像LSBs中,利用多数原则恢复水印信号,结合数学形态学滤波进行篡改检测与定位.仿真实验证实了该方案的有效性,在抵抗通常的内容保持攻击操作的同时,能实现精准篡改检测与定位.
英文摘要：
In order to protect copyright of digital images and detect malicious tampering, and locate tampered region with high-accuracy, an image tampering detection algorithm based on adaptive semi-fragile watermarking technique is proposed by exploiting image visual features. The watermark signal is adaptively inserted into the LSBs （ Least Significant Bits） of host images by combining visual perception, and the majority principle is employed to extract watermark bits, and mathematical morphology filter is used to detect and locate image tampering. Simulation experiments show that the scheme is effective and is robust against common content preserving operations. It also can detect correctly and locate image tampering.
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