基于改进的GSA彩色图像分割方法研究

提出了一种基于改进的GSA(Gravitational Search Algorithm)无监督彩色图像分割方法。在GSA的基础上,采用了改进的欧氏距离,引入了像素分离过程,并给出了像素分离条件的最小速度。首先像素点的移动采用改进的欧氏距离进行GSA搜索;然后进行区域生长,合并相同性质的像素;最后达到一定速率的部分像素点从聚类中分离出来。实验结果表明,与传统C均值聚类算法和GSA算法相比,该方法在复杂场景图像中具有更好的分割效果。     

Grid-based internet worm behavior simulator

The traditional network simulator has function and performance limitation when simulating Internet worms,so we designed the grid-based Internet worm behavior simulator (IWBS Grid).IWBS Grid makes use of the real Internet topology,link and routing information,and simulates the worm behavior at the packet event-driven level;and proposes a high-performance Internet worms behavior simulation platform by right of the grid computing capability,resource and task management,and so on.The experimental results show that IWBS grid surpasses the traditional simulator in simulating capability,and the technology to track the worm propagation in packet level can propose the valuable information for the further study on worms.