期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
一种多特征融合的小波变换图像配准方法 被引量:1
1
作者 蔡宗吟 叶秋冬 《计算机应用与软件》 CSCD 北大核心 2012年第11期75-78,107,共5页
为了满足图像配准对鲁棒性、准确性和效率的要求,提出一种多特征融合的小波变换图像配准方法。该方法首先提取H-L特征点,边缘稳定点以及相关性等特征,对这些特征构造特征空间,用模糊集求解特征点距,之后用多约束准则进行处理,用小波方... 为了满足图像配准对鲁棒性、准确性和效率的要求,提出一种多特征融合的小波变换图像配准方法。该方法首先提取H-L特征点,边缘稳定点以及相关性等特征,对这些特征构造特征空间,用模糊集求解特征点距,之后用多约束准则进行处理,用小波方法剔除匹配对中的错误匹配,最后对结果进行分析。实验结果表明该配准方法能够对不同分辨率、不同旋转角度的图像精确地实现配准,同时配准的时间也大幅减少,具有精度高、速度快、抗噪性能良好等优点。 展开更多
关键词 H-L特征 特征匹配 边缘稳定点 图像配准 相关性
下载PDF
Analysis of epidemic spreading with feedback mechanism in weighted networks
2
作者 Jiancheng Zhang Jitao Sun 《International Journal of Biomathematics》 2015年第1期81-91,共11页
In this paper, we investigate a new model with a generalized feedback mechanism in weighted networks. Compare to previous models, we consider the initiative response of people and the important impact of nodes with di... In this paper, we investigate a new model with a generalized feedback mechanism in weighted networks. Compare to previous models, we consider the initiative response of people and the important impact of nodes with different edges on transmission rate as epidemics prevail. Furthermore, by constructing Lyapunov function, we prove that the disease-free equilibrium E^0 is globally asymptotically stable as the epidemic threshold R^*〈 1. When R^* 〉 1, we obtain the permanence of epidemic and the local stability of endemic equilibrium E*. Finally, one can find a good agreement between numerical simulations and our analytical results. 展开更多
关键词 SIS model weighted network feedback mechanism global analysis
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部