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一种红外搜索系统中弱小目标自适应检测算法

Adaptive algorithm for small target detection in infrared searching system

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摘要

为解决红外搜索系统中场景起伏造成的背景预测不准确这一问题,提出了一种自适应调整的空间滤波方法。该算法在估计背景的同时,对背景残差进行计算,根据残差值调整滤波参数,使背景残差趋于最小,以适应背景的起伏。当背景包含较多复杂因素时,不利于目标提取,多尺度形态学算子通过不同尺度不同形态的结构体参与计算,可以全面地估计背景,进一步抑制背景残差,再通过计算图像全局阈值,自适应分割出潜在目标。采用并行运算,可将算法实现于现场可编程器件(FPGA)上。试验结果表明:即使当场景较复杂,场景信噪比较低时,依然可以使处理后的图像信噪比大于3,从而可显著提高红外搜索系统的检测概率,实现弱小目标的检测。

Abstract

Aiming at the small object detection in infrared searching system, a novel algorithm of adaptive spatial filtering is proposed on the basis of the model analysis of infrared images. The background residual errors are calculated in the algorithm while the background is estimated, and the filtering parameters are adjusted to adapt to the fluctuation of the background according to the values of the residual errors. The multi-scale morphology operator is used in the algorithm. This method is suitable to the infrared small object detection in clutter background, and can reserve the information of objects totally. The method is run on the platform of FPGA, and used in an infrared searching system. The experiment results presented in this paper show that the signal-to-noise ratio (SNR) of the processed images can reach to 3 even if the scene is complex and SNR is low. It has a good result on real-time processing and is easy to be realized in engineering.

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中图分类号:TN219

所属栏目:红外技术

收稿日期:2009-07-27

修改稿日期:2009-09-15

网络出版日期:0001-01-01

作者单位    点击查看

程刚:西安应用光学研究所, 陕西 西安 710065
朱辉:西安应用光学研究所, 陕西 西安 710065
张勇:西安应用光学研究所, 陕西 西安 710065
王清泉:西安应用光学研究所, 陕西 西安 710065

联系人作者:程刚(herrey3000@yahoo.com.cn)

备注:程刚(1979-),男,陕西西安人,工程师,硕士,主要从事红外成像及实时光电信息处理工作。

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【3】WANG D, HAESE-COAST V, BRUNO A, et al. Some statistical properties of mathematical morphology[J]. J. IEEE Trans. On Signal Processing,1995,43(3):1955-1965.

【4】ZHU Hong,ZHAO Yi-gong. Detection of weak and small moving infrared targets by adaptive prediction of background[J]. Infrared Millim. Waves,1999,18(4):305-310. (in Chinese with an English abstract)
朱红,赵亦工.基于背景自适应预测的红外弱小运动目标检测[J].红外与毫米波学报,1999,18(4):305-310.

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引用该论文

CHENG Gang,ZHU Hui,ZHANG Yong,WANG Qing-quan. Adaptive algorithm for small target detection in infrared searching system[J]. Journal of Applied Optics, 2010, 31(1): 128-131

程刚,朱辉,张勇,王清泉. 一种红外搜索系统中弱小目标自适应检测算法[J]. 应用光学, 2010, 31(1): 128-131

被引情况

【1】田毅龙,李志军,王卫华,陈曾平. 基于双核判决的红外小目标检测方法. 红外技术, 2012, 34(7): 398-403

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