基于ORB和WHT的电力视觉快速水印算法研究

Research on Fast Watermarking Algorithm for Power Vision Based on ORB and WHT

基于对电力信息安全保护及实时性的需求,提出了基于ORB和沃尔什哈达码变换(WHT)的快速数字水印算法。首先,提取ORB特征点并对其进行筛选优化,选择特征点邻域作为水印嵌入区域;然后,对各邻域进行WHT变换嵌入水印,生成含密载体图像,提取水印过程为嵌入水印的逆过程。实验表明,这种快速水印算法,运行时间远小于常规水印算法,不可见性良好,对几何攻击和噪音攻击具有良好的抵抗力。

Based on the demand for information security of the power and realtime performance,this paper proposes a fast digital watermarking algorithm based on ORB(oriented FAST and rotated BRIEF)and WHT(walsh hadamard transform).Firstly,the ORB feature points are extracted and optimized,the feature point neighborhood is selected as the watermark embedding area,WHT transformation is performed on each neighborhood to embed the watermark,and generate the dense carrier image.The watermark extraction process is the reverse process of embedding the watermark.Experiments show that the fast watermarking algorithm proposed has a much shorter running time than conventional watermarking algorithms,it has good invisibility,and good resistance to geometric attacks and noise attacks.