Improved Image Watermark Algorithm in Frequency Domain Base on Human Visual Characteristics
Haiyang Ding · Journal of Beijing Institute of Graphic Communication · 2013
In order to improve watermarking capacity and transparency of DFT-based watermarking algorithm,an improved image watermark algorithm in frequency domain base on human visual characteristics is proposed.Through selecting the appropriate region to embedded watermark,watermark capacity can be increased,and visual effect of watermarked image can be significantly improved.The experimental results show that the proposed algorithm can increase watermark capacity,and can significantly improve visual effect of watermarked image in the condition that embedding strength and capacity are the same.