Modification of the Fingerprinting Code Decoding Procedure in the Case of Soft Decision

This article proposes a mutual adaptation of the procedure for extracting digital watermark from video sequences and fingerprinting code decoding. Proposed solution includes two interrelated techniques. The first one is a usage of “soft” decision making instead of “hard” decision during watermark extraction. This means that the additional information on extracted bit reliability will be obtained from the hidden channel. The second one is an including of the reliability to decoding procedure. The use of such a solution allows more effective work of fingerprinting codes and achieves zero accusation error rates.