Title :
Analysis of watermarking systems in the frequency domain and its application to design of robust watermarking systems
Author :
Miyazaki, Akio ; Okamoto, Akihiro
Author_Institution :
Graduate Sch. of Inf. Sci. & Electr. Eng., Kyushu Univ., Fukuoka, Japan
Abstract :
This paper aims to design robust watermarking systems in the frequency domain. We first present the general model of watermark embedding and extracting processes and carry out their analysis. Then we examine the robustness of the watermarking system against image processing and clarify the reason why detection errors occur in the watermark extracting process. Based on the result, we improve the watermark extracting process and design robust watermarking systems. The improvement is accomplished using deconvolution filter and neural network techniques. Numerical experiments using the DCT-based watermarking system show good performance as we expected
Keywords :
copy protection; copyright; deconvolution; discrete cosine transforms; feature extraction; filtering theory; frequency-domain analysis; image coding; security of data; transform coding; DCT-based watermarking system; copyright protection; deconvolution filter; detection errors; frequency domain analysis; image processing robustness; neural network; robust watermarking systems design; watermark embedding; watermark extraction; watermarking system; Deconvolution; Filters; Frequency domain analysis; Image processing; Neural networks; Process design; Protection; Robustness; Signal processing; Watermarking;
Conference_Titel :
Image Processing, 2001. Proceedings. 2001 International Conference on
Conference_Location :
Thessaloniki
Print_ISBN :
0-7803-6725-1
DOI :
10.1109/ICIP.2001.958539
