Title :
Elimination of visual artifacts in digital image watermarking
Author :
Tungala, Nikhil C. ; Noore, Afzel
Author_Institution :
Lane Dept. of Comput. Sci. & Electr. Eng., West Virginia Univ., Morgantown, WV, USA
Abstract :
A new digital watermarking technique is proposed for still images in the modified discrete cosine transform (MDCT) domain. Most of the existing image and video watermarking algorithms use block transformations that introduce blocking artifacts, causing perceptible distortions. MDCT has better coding performance compared to DCT and also the computational complexity of MDCT has been reduced in recent years compared to wavelets. We investigate the use of MDCT in digital watermarking.
Keywords :
discrete cosine transforms; image coding; transform coding; watermarking; block transformations; blocking artifacts; computational complexity; digital image watermarking; digital watermarking; modified DCT; modified discrete cosine transform; visual artifact elimination; Computer science; Digital images; Discrete cosine transforms; Discrete transforms; Humans; Image coding; Image edge detection; Image reconstruction; Signal generators; Watermarking;
Conference_Titel :
System Theory, 2003. Proceedings of the 35th Southeastern Symposium on
Print_ISBN :
0-7803-7697-8
DOI :
10.1109/SSST.2003.1194531
