基于局部纹理分析的红外小目标检测及其DSP实现  

Dim target detection system based on local texture analysis and hardware implementation with DSP

作　　者：王克勇[1] 宋承天[1] 郑链[1] 

机构地区：[1]北京理工大学宇航科学技术学院,北京100081

出　　处：《光学技术》2008年第S1期167-169,共3页Optical Technique

摘　　要：在红外小目标图像中,目标具有与其邻域背景明显不同的纹理和频率特征,在不同尺度和不同频率通道上有不同的表现,利用小波的多尺度分析理论,可将小目标与其邻域背景区分开。采用适合在低信噪比下小目标检测的局部纹理分析方法实现了小目标检测。为了满足红外小目标检测的实时性要求,采用TI公司的高性能数字多媒体DSP芯片实现了小目标检测系统。通过软件程序的优化设计来进一步提高程序运行速度与流水效率,具有良好的软硬件体系结构。通过对实测红外序列图像进行实验表明,所设计的系统能实时地、稳定地检测复杂背景下的1~3个像素的运动小目标。In infrared small target images,the target has different texture characteristic and frequency characteristic from background.Using multi-scale wavelet theory,small target is separated from background.A local texture analysis method which is very fit for dim target detection in low SNR(signal to noise rate) is presented to realize the detection.In order to satisfy the real-time realization request of dim target detection,a dim target detection system is presented,and it is based on a kind of high performance digital multimedia DSP chip produced by TI Company.The program's processing speed and pipelining efficiency are improved by optimizing the software program,so the system has a very good software and hardware system structure.Experiments on real infrared image sequences show that the system can detect real time steadily dim target with 1～3 pixels in clutter background.

关 键 词：红外小目标 检测 局部纹理分析 硬件实现 软件优化 

分 类 号：TN215[电子电信—物理电子学]