Title :
Robust watermark against double attacks of compression and cropping
Author :
Takatsuka, M. ; Kajihara, M. ; Hirakawa, Y. ; Ohzeki, K.
Author_Institution :
Grad. Sch. of Eng. & Sci., Shibaura Inst. of Technol., Tokyo, Japan
Abstract :
The authors propose a robust watermark method to cope with the situation when double attacks simultaneously occur. Under a JPEG compression attack and cropping attack whose arbitrary positions to be attacked are assumed. Experiments with a heavy JPEG compression rate of 1/33 show a satisfactory detection ratio of 99.9%.
Keywords :
data compression; discrete cosine transforms; image watermarking; JPEG compression attack; JPEG compression rate; cropping attack; detection ratio; double attacks; robust watermark method; Degradation; Discrete cosine transforms; Image coding; PSNR; Quantization (signal); Robustness; Watermarking; DCT; double attacks; shift; watermark;
Conference_Titel :
Consumer Electronics (GCCE), 2014 IEEE 3rd Global Conference on
Conference_Location :
Tokyo
DOI :
10.1109/GCCE.2014.7031337
