Title :
On digital watermarks based on complete complementary codes
Author :
Horii, Yoshiya ; Kojima, Tetsuya
Author_Institution :
Tokyo Nat. Coll. of Technol., Hachioji, Japan
Abstract :
Digital watermarking technologies with spread spectrum (SS) sequences have been previously proposed. The sequences used in previous studies, however, do not necessarily have good correlation properties. It is known that complete complementary codes have ideal correlation properties and very effective for mobile communication systems like CDMA. In this paper, it is shown that correlation properties of sequences play very important roles in detecting the embedded secret information from the watermarked images. In addition, we propose a method to embed multiple secret data simultaneously into a single image.
Keywords :
code division multiple access; correlation methods; image coding; mobile communication; watermarking; CDMA; complete complementary code; correlation property; digital watermarking technology; embedded secret information detection; image watermarking; mobile communication system; Computational efficiency; Data mining; Educational institutions; Internet; Mobile communication; Multiaccess communication; Resists; Spread spectrum communication; Videos; Watermarking; complete complementary code; digital watermark; spread sequence;
Conference_Titel :
Signal Design and its Applications in Communications, 2009. IWSDA '09. Fourth International Workshop on
Conference_Location :
Fukuoka
Print_ISBN :
978-1-4244-4379-6
Electronic_ISBN :
978-1-4244-4380-2
DOI :
10.1109/IWSDA.2009.5346410
