Title :
A watermark for digital images
Author :
Wolfgang, Raymond B. ; Delp, Edward J.
Author_Institution :
Comput. Vision & Image Process. Lab., Purdue Univ., West Lafayette, IN, USA
Abstract :
The growth of networked multimedia systems has magnified the need for image copyright protection. One approach used to address this problem is to add an invisible structure to an image that can be used to seal or mark it. These structures are known as digital watermarks. We describe two techniques for the invisible marking of images. We analyze the robustness of the watermarks with respect to linear and nonlinear filtering, and JPEG compression. The results show that our watermarks detect all but the most minute changes to the image
Keywords :
copyright; data compression; filtering theory; image coding; image colour analysis; multimedia communication; security of data; JPEG compression; algorithms; colour images; digital images; digital watermarks; image changes detection; image copyright protection; invisible structure; linear filtering; networked multimedia systems; nonlinear filtering; random errors detection; Copyright protection; Digital images; Filtering; Image coding; Multimedia systems; Nonlinear filters; Robustness; Seals; Transform coding; Watermarking;
Conference_Titel :
Image Processing, 1996. Proceedings., International Conference on
Conference_Location :
Lausanne
Print_ISBN :
0-7803-3259-8
DOI :
10.1109/ICIP.1996.560423
