【摘要】 为了提高加水印图像的感知质量,对基于图像像素预测误差的嵌入算法进行了研究。优先选择了图像的边缘和纹理进行差值扩展嵌入,并结合压缩性非常高的溢出位置图,实现了高视觉质量、大嵌入容量的可逆数据隐藏算法。更多还原

【Abstract】 To improve the visual quality of watermarked images,a predicted-error-based reversible data embedding algorithm was proposed.The algorithm gave priority to the use of image edges and textures for difference expansion embedding.And it also adopted a compression-efficient overflow location map.The proposed algorithm has a high embedding capacity,and the watermarked image also has a better visual quality.更多还原