| 一种基于小波与遗传算法的小目标检测算法 |
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| 引用本文： | 李红艳,吴成柯.一种基于小波与遗传算法的小目标检测算法[J].电子学报,2001,29(4):439-442. |
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| 作者姓名： | 李红艳 吴成柯 |
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| 作者单位： | 1. 西安电子科技大学机电工程学院,西安 710071;2. 西安电子科技大学综合业务网国家重点实验室,西安 710071 |
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| 基金项目： | 国防重点实验室基金，图像信息处理与智能控制教育部开放研究实验室基金! (No .TKL990 2 ) |
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| 摘 要： | 本文提出了一种快速检测序列图像中低信噪比(＜2)小目标的算法.该算法采用小波滤波器对每帧图像滤波,提高目标的信噪比,剔除部分噪声点,降低了低信噪比小目标检测算法的运算量;设计了基于遗传算法的起始航迹搜索算法,有效地避免航迹的漏检;采用截断序贯似然比检验,形成确认航迹.仿真结果表明应用此算法,可快速实现信噪比小于2的小目标(2×2)的检测与跟踪.
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| 关 键 词： | 小波滤波 遗传算法 多级假设检验 序列图像 小目标检测与跟踪 |
| 文章编号： | 0372-2112 (2001) 04-0439-04 |
| 收稿时间： | 2000-01-06 |
Detecting Dim Small Targets in Image Sequences Based on Wavelet Transforms and Genetic Algorithms |
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| LI Hong-yan,WU Cheng-ke.Detecting Dim Small Targets in Image Sequences Based on Wavelet Transforms and Genetic Algorithms[J].Acta Electronica Sinica,2001,29(4):439-442. |
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| Authors: | LI Hong-yan WU Cheng-ke |
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| Affiliation: | 1. School of Mechan-Electronic Engineering,Xidian University,Xi'an 710071,China; 2. National Key Laboratory on ISN,Xidian University,Xi'an 710071,China |
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| Abstract: | A fast algorithm is proposed for tracking low observable small targets in a digital image sequences.Wavelet transforms are used for image filterting to improve SNR.Tentative tracks are formed based on genetic algorithms which avoid target tracks missing.Coding and genetic operation are designed for this problem.Target trajectories are confirmed by truncated sequential probability ratio test.The simulation results show that it can efficiently detect and track small targets with size as small as 2×2 and SNR＜2. |
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| Keywords: | wavelet transforms genetic algorithms multistage hypothesis sequential images detecting and tracking dim small target |
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