一种提高图像制导抗于扰性的方法  

Improvement of Anti-Interference in Image-Guided Navigation

作　　者：魏智[1] 彭嘉雄[1] 丁明跃[1] 王亚东[1] 

机构地区：[1]华中理工大学图像识别与人工智能研究所

出　　处：《华中理工大学学报》1996年第2期62-65,共4页Journal of Huazhong University of Science and Technology

基　　金：航天基础性研究基金;北京大学信息科学中心资助

摘　　要：在图像流约束方程的基础上，提出了一种在连续时空空间里对序列图像中运动目标的速度进行估计的算法．该算法克服了以往图像流运动目标提取方法的缺点，通过在动态环境里对时间和空间轴求们导并用三维拟合模板进行数值逼近，能较准确地从具有各种光电干扰的背景中利用多出图像序列求得目标的运动参数，最终完成复杂环境下的图像制导．计算机实验的结果验证了算法的良好性能．he velocity estimation algorithm for a moving target by the image sequence in continuousspatial and temporal space is presented using the constraint equation for the image now. The algorithm proposed has overcome the shortcomings of earlier methods in the extraction of the moving target Of an image now. By taking partial derivatives respectively in spatial and temporal coordinates,numerical approximation is performed by fitting them with three dimensional templates. The velocityand other parameters of a moving target from multi frame image sequence in a complex background canbe quite accurately obtained and the image navigation in very complicated environment with variousphotoelectrical interferences can be successfully accomplished. The good performance of the algorithmhas been verified by computer simulation.

关 键 词：图像制导 运动目标 连续时空空间 抗干扰性 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]