Error detection by fragile watermarking*

Error concealment techniques are useful in video transmission over channels that introduce bit errors. The efficiency and result of error concealment technique, however, rely on the error detection capabilities of video decoders. A novel error detection technique employing fragile watermarking is proposed in this paper. By embedding a fragile watermark on the quantized DCT coefficients and examining its integrity on the decoder side, the error detection capability of video decoders is significantly increased compared to widely used syntax-based error detection schemes. Keyword fragile watermark, watermarking, error detection, error resilience