Protection of intellectual property rights has become one of the focuses of social concerning. To reduce those disputations, the watermark is implanted into the media by the content owner to declare original copyright. Among which, the high payload can achieve the accurate tampering localization, but maybe bring low visual quality watermarked image. Both accurate tampering localization and high watermarked image quality seem contradictory. For this, this paper proposes a hybrid-Sudoku based fragile watermarking scheme for digital image tampering detection. The hybrid-Sudoku based scheme provides a double perspective mechanism to embed the watermark. In the first perspective of the Sudoku, the watermark is virtually embedded into each pixel pair, resulting in the temporary coordinate information. Then, the temporary coordinate information is concealed into cover image based on the second perspective of the Sudoku. Finally, several common attacks are utilized to evaluate the tampering detection performance of the proposed method. Experimental results show that the proposed scheme can achieve a considerable accuracy in tampering localization and provide the satisfactory visual quality of watermarked image, with PSNR of 47.80 dB. Additionally, the design enhances the security and imperceptive of the hidden watermark.

知识产权保护已成为社会关注的焦点之一。为了减少这些争议，内容所有者将水印植入媒体中以声明原始版权​​。其中，高有效载荷可以实现准确的篡改定位，但可能带来低视觉质量的水印图像。准确的篡改定位和高水印图像质量似乎都是矛盾的。为此，本文提出了一种基于混合数独的脆弱水印方案，用于数字图像篡改检测。基于混合数独的方案提供了嵌入水印的双重透视机制。在数独的第一个视角中，水印实际上被嵌入到每个像素对中，从而产生了临时坐标信息。然后，根据数独的第二个角度，将临时坐标信息隐藏在封面图像中。最后，利用几种常见的攻击来评估所提出方法的篡改检测性能。实验结果表明，该方案在篡改定位方面可以达到相当的精度，并可以提供令人满意的水印图像视觉品质。PSNR为47.80 dB。此外，该设计增强了隐藏水印的安全性和隐蔽性。