Error Detecting Code Based Fragile Watermarking Scheme for 3D Models

The security problem of the watermark verification task is one of the most important issues in real world application. Most published 3D fragile watermarking schemes employed the verification task only mentioned one method which uses the hash function. It is hard to implement these fragile watermarking schemes in real world application due to the high collision characteristic of the hash function. To achieve the verification task, the concept of error detecting code is applied. An error detecting code based reversible fragile watermarking scheme for 3D models in spatial domain is proposed in this paper. The proposed scheme is employed to watermarking a 3D model by using the reversible quantization index modulation technique. The verification bits are absent in the proposed scheme, and the verification task is achieved by the authentication of the error detecting code based watermark. Experimental results show that the damaged watermark can be detected and the distortion can be controlled by the key value setting.