Title :
Joint halftoning and watermarking
Author :
Kacker, Dhiraj ; Allebach, Jan P.
Author_Institution :
Shutterfly Inc., Redwood City, CA, USA
Abstract :
A spread spectrum watermarking algorithm for hardcopy imaging applications using a human visual system model based halftoning technique called direct binary search (DBS) is presented. DBS is used to design a halftone that jointly optimizes a human visual system based error metric and correlation watermark detector output. The original image is required for the correlation watermark detector.
Keywords :
copy protection; correlation methods; image coding; search problems; security of data; signal detection; spread spectrum communication; visual perception; DCT; HVS based error metric optimisation; continuous-tone image; correlation watermark detector output; direct binary search; halftone design; halftone reproduction; hardcopy imaging applications; human visual system model; joint halftoning; spread spectrum watermarking algorithm; Detectors; Discrete cosine transforms; Humans; Nonlinear distortion; Printing; Robustness; Satellite broadcasting; Spread spectrum communication; Visual system; Watermarking;
Conference_Titel :
Image Processing, 2000. Proceedings. 2000 International Conference on
Print_ISBN :
0-7803-6297-7
DOI :
10.1109/ICIP.2000.899228
