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摘要: 提出了一种基于感兴趣区域的图像认证与自恢复算法,该算法将图像分为两部分; 感兴趣区域和背景区域.算法首先利用了基于4×4分块的编码算法对感兴趣区域进行编码， 然后通过映射函数将此码流嵌入到背景图像的离散余弦变换系数中.实验表明该算法可以对 整幅图像进行完整性认证,同时对被恶意篡改的感兴趣区域也能很好地恢复原来信息.Abstract: A self-recovery algorithm based on region of interest is proposed in this paper. This algorithm divides a host image into two parts: region of interest and region of background. The region of interest is coded based on 4×4 blocks, and the codes are then embedded into the DCT coefficients of the region of background by a novel mapping function. Experimental results indicate that this scheme can authenticate the whole image, at the same time, if the region of interest is tampered maliciously, the scheme can recover the original content with good quality.
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