A Copyright Protection Scheme for Color Images using Secret Sharing and Wavelet Transform
A Copyright Protection Scheme for Color Images using Secret Sharing and Wavelet Transform
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发表时间：
2007-10
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通讯作者：
Shang-Lin Hsieh;Lung-Yao Hsu;I-Ju Tsai
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作者：
Shang-Lin Hsieh;Lung-Yao Hsu;I-Ju Tsai
本文提出了一种利用秘密共享和小波变换的彩色图像版权保护方案。该方案包含两个阶段：共享图像生成阶段和水印检索阶段。在生成阶段，所提出的方案首先将图像转换到YCbCr颜色空间，并从颜色空间创建一个特殊的采样平面。接下来，该方案使用离散小波变换从采样平面提取特征。然后，该方案利用这些特征和水印来生成主要份额图像。在检索阶段，首先使用可疑图像和主要共享图像的特征来重建扩展水印。接下来，该方案降低附加噪声以获得恢复的水印，然后将其与原始水印进行验证以检查版权。实验结果表明，该方案能够抵抗JPEG压缩、模糊、锐化、噪声添加、裁剪等多种攻击。准确率均高于97%。关键词——彩色图像、版权保护、离散小波变换、秘密共享、水印。
This paper proposes a copyright protection scheme for color images using secret sharing and wavelet transform. The scheme contains two phases: the share image generation phase and the watermark retrieval phase. In the generation phase, the proposed scheme first converts the image into the YCbCr color space and creates a special sampling plane from the color space. Next, the scheme extracts the features from the sampling plane using the discrete wavelet transform. Then, the scheme employs the features and the watermark to generate a principal share image. In the retrieval phase, an expanded watermark is first reconstructed using the features of the suspect image and the principal share image. Next, the scheme reduces the additional noise to obtain the recovered watermark, which is then verified against the original watermark to examine the copyright. The experimental results show that the proposed scheme can resist several attacks such as JPEG compression, blurring, sharpening, noise addition, and cropping. The accuracy rates are all higher than 97%. Keywords—Color image, copyright protection, discrete wavelet transform, secret sharing, watermarking.