【摘要】 提出了一种基于图像的统计特征与人类视觉系统相结合的水印嵌入方法.原始图像经4级小波分解后,在除低频子带与第一层子带之外的子带中选择重要系数,结合视觉掩蔽模型嵌入水印,实验仿真表明水印是不可见的,并且具有较好的鲁棒性.更多还原

【Abstract】 A watermarking algorithm using statistical charcteristic of image and human visual system(HVS) is proposed.The original image is decomposed into 4-level using a discrete wavelet transform(DWT),then the watermark is embeded into it by selecting the perceptually significant coefficients from all subbands,except for the baseband and subbands on the lowest level.The watermark embeded is based on the visual masking model.Computer simulation indicates that the proposed watermarking algorithm is invisible and robust.更多还原