An Effective Data Embedding for Error Concealment
Shinfeng D. Lin, Cheng‐Wei Tsai · 2008
In recent years, image and video are widely used in many applications on the Internet. Because of the unreliable transmission channels and the malicious tampering, error concealment and tamper recovery algorithms have been proposed respectively, and the data embedding techniques are further adopted in the tamper recovery and recent error concealment methods. The main disadvantage of the data embedding is that more embedded information result in more error concealment, tamper recovery and larger quality degradation simultaneously. To prevent the quality from degradation, most of the error concealment and tamper recovery schemes embed the simplified or down-sampled information to reduce the amount of embedded information. However, this information can not be applied to the recovery of the error parts and tampered areas well enough in higher quality' s applications. Therefore, we propose an effective utilization of the embedding spaces, and it can be generally applied to error concealment and tamper recovery schemes.