Title :
Multimedia Courseware Copyright Notification and Protection Based on DCT
Author :
Huang, Ruohong ; Liu, Huailan ; Chen, Yongqiang
Author_Institution :
Huazhong Univ. of Sci. and Technol., Wuhan
Abstract :
According to the characteristic of courseware screen stream, this paper proposes a novel digital watermark solution for the color image of screen stream based on DCT. It embeds visible and invisible watermarks into different area of screen color image to achieve screen color image with dual digital watermark embedded. The effectiveness and good results of this method in multimedia courseware copyright notification and protection have been testified by a test system.
Keywords :
courseware; discrete cosine transforms; image colour analysis; multimedia computing; watermarking; digital watermarking; discrete cosine transforms; multimedia courseware copyright notification; multimedia courseware protection; screen color image; Color; Computer science; Courseware; Discrete cosine transforms; Image coding; Image converters; Pixel; Protection; Streaming media; Watermarking; Copyright Notification; Copyright Protection; DCT; Digital Watermark; Multimedia Courseware;
Conference_Titel :
Information Technologies and Applications in Education, 2007. ISITAE '07. First IEEE International Symposium on
Conference_Location :
Kunming
Print_ISBN :
978-1-4244-1386-7
Electronic_ISBN :
978-1-4244-1386-7
DOI :
10.1109/ISITAE.2007.4409322
