سال انتشار: ۱۳۹۱

محل انتشار: بیستمین کنفرانس مهندسی برق ایران

تعداد صفحات: ۴

نویسنده(ها):

Mehdi Hajizadeh – Shiraz University of Technology, Shiraz, Iran
Heidar Ebrahimi – Shahid Chamran University of Ahvaz, Ahvaz,Iran

چکیده:

This paper proposed a robust digital image watermarking scheme based on remainder of wavelet blocks. At first, the original image is decomposed into ten sub-bands bythe 3-level wavelet transform. Then, the values of wavelet coefficients are quantized. By increasing divisor and size of blocks, itis possible to embed watermark bits in the host image with more energy; however, this will lead to PSNR reduction. The experimental results show that the proposed algorithm has agood resistance against to common attacks, especially JPEG compression; moreover it outperforms previous methods in the most situations