سال انتشار: ۱۳۸۵

محل انتشار: چهاردهمین کنفرانس مهندسی برق ایران

تعداد صفحات: ۵

نویسنده(ها):

Ahmad Movahedian Attar – Isfahan University of Technology
Omid Taheri – Isfahan University of Technology
Saeid Sadri – Isfahan University of Technology
Mohammad Javad Omidi – Isfahan University of Technology

چکیده:

DHSED is a watermarking algorithm to embed hidden binary visual patterns in two error diffused halftone images such that the hidden patterns
can be visually inspected when the images are overlaid. A drawback of the DHSED method is that if the image has large areas of the same grey-level, hiding data causes some edge effects which may reveal the hidden data. In this paper we propose an improvement to the DHSED which fairly reduces the edge effects.