Title :
Effect of JPEG compression on image watermark detection
Author :
Xia, Minghui ; Liu, Bede
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., NJ, USA
Abstract :
Compression on a watermarked image can significantly affect the detection of the embedded watermark. To show that a particular watermarking scheme is robust against compression, simulation is often relied upon. In this paper, we investigate this problem analytically. We first characterize the noise introduced by JPEG compression. We then propose a maximum a posteriori (MAP) detector, analyze its performance, and demonstrate that it has superior performance over the correlation detector
Keywords :
copy protection; data compression; discrete cosine transforms; image coding; JPEG compression effect; MAP detector; embedded watermark detection; image watermarking; maximum a posteriori detector; noise characterization; Additive white noise; Detectors; Discrete cosine transforms; Image coding; Pixel; Quantization; Spread spectrum communication; Statistics; Transform coding; Watermarking;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on
Conference_Location :
Salt Lake City, UT
Print_ISBN :
0-7803-7041-4
DOI :
10.1109/ICASSP.2001.941336
