TY - GEN
T1 - Variance-classified capacity watermarking using Discrete Cosine Transform
AU - Guo, Jing Ming
AU - Lu, Yu Cheng
AU - Lee, Jiann Der
PY - 2008
Y1 - 2008
N2 - This study presents a robust and semi-blind watermarking by embedding information into low frequency AC coefficients of Discrete Cosine Transform (DCT). Since the imperceptibility is the most significant issue in watermarking, the DC value is maintained unchanged. The proposed methods utilize the DC values of the neighboring blocks to predict the AC coefficients of the center block. The low frequency AC coefficients are modified to carry watermark information. The Least Mean Squares (LMS) is employed to yield the intermediate filters, cooperating with the neighboring DC coefficients to precisely predict the original AC coefficients. Two watermarking methods, namely Watermark Embedding in the Predicted AC Coefficient (WEPAC) and Watermark Embedding in the Original AC coefficient (WEOAC), are presented in this study. Moreover, many attacks are addressed to show the robustness of the proposed methods.
AB - This study presents a robust and semi-blind watermarking by embedding information into low frequency AC coefficients of Discrete Cosine Transform (DCT). Since the imperceptibility is the most significant issue in watermarking, the DC value is maintained unchanged. The proposed methods utilize the DC values of the neighboring blocks to predict the AC coefficients of the center block. The low frequency AC coefficients are modified to carry watermark information. The Least Mean Squares (LMS) is employed to yield the intermediate filters, cooperating with the neighboring DC coefficients to precisely predict the original AC coefficients. Two watermarking methods, namely Watermark Embedding in the Predicted AC Coefficient (WEPAC) and Watermark Embedding in the Original AC coefficient (WEOAC), are presented in this study. Moreover, many attacks are addressed to show the robustness of the proposed methods.
KW - Digital watermarking
KW - Discrete cosine transform
KW - Least mean squares
KW - Watermark embedding in the original ac coefficient
KW - Watermark embedding in the predicted ac coefficient
UR - http://www.scopus.com/inward/record.url?scp=54049152023&partnerID=8YFLogxK
U2 - 10.1109/IIH-MSP.2008.8
DO - 10.1109/IIH-MSP.2008.8
M3 - 会议稿件
AN - SCOPUS:54049152023
SN - 9780769532783
T3 - Proceedings - 2008 4th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2008
SP - 977
EP - 980
BT - Proceedings - 2008 4th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2008
T2 - 2008 4th International Conference on Intelligent Information Hiding and Multiedia Signal Processing, IIH-MSP 2008
Y2 - 15 August 2008 through 17 August 2008
ER -