基于FPGA设计的运动弱小目标检测  

Detection of Moving Small Targets By FPGA

作　　者：张彩梅[1] 张启衡[1] 

机构地区：[1]中国科学院光电技术研究所,四川成都610209

出　　处：《红外》2004年第4期14-17,共4页Infrared

摘　　要：采用极大/中值滤波算法去除严重的散斑噪声,并利用图像序列中目标运动的相关性,进行能量累积,可有效地提高图像信噪比,实现对弱小目标的检测。在现场可编程门阵列(FPGA)中实现了该方法,并应用到实时系统中。实验结果表明,该方法能够对低信噪比弱小目标图像实现实时有效的滤波,具有一定的实用价值。Grievous specie noise was taken out by a maximum/median filter and the image sequences at low Signal to Noise Ratio (SNR) were cumulated using the relativity of target. The SNR. could be improved. A signal processor which can implement the algorithm by FPGA is presented. The experimental results indicate that the method can effectively improve the SNR of image sequences and the platform can implement the method in real time.

关 键 词：FPGA设计 极大/中值滤波算法 散斑噪声 弱小目标 能量累加 信噪比 图像处理技术 现场可编程门阵列 

分 类 号：TN79[电子电信—电路与系统]