| 引用本文: | 闫宇壮,黄新生,郑永斌,等.惯导信息辅助的匹配模板校正方法.[J].国防科技大学学报,2011,33(4):128-133.[点击复制] |
| YAN Yuzhuang,HUANG Xinsheng,ZHENG Yongbin,et al.INS-aided Template Correction Method for Matching[J].Journal of National University of Defense Technology,2011,33(4):128-133[点击复制] |
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| 惯导信息辅助的匹配模板校正方法 |
| 闫宇壮, 黄新生, 郑永斌, 徐婉莹 |
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(国防科技大学 机电工程与自动化学院，湖南 长沙 410073)
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| 摘要: |
| 面向飞行器对地面目标的匹配系统应用，提出一种惯导信息辅助的模板校正方法。根据目标位置以及摄像机位姿信息，建立目标透视成像模型以及不同摄像机位姿下的模板校正方程；通过分析目标任意点与形心的景深关系，对校正方程进行转化并给出完整的模板校正算法。最后通过基于视景仿真技术搭建的目标模拟平台，截取不同摄像机位姿下的目标成像，并与本文校正结果进行对比，结果表明校正后的模板图与实时图在尺度、旋转、视角具有良好的一致性。使用校正后的模板做目标匹配可以有效地抑制漂移，提升系统的匹配性能。 |
| 关键词: 图像校正 透视投影 相关匹配 惯导辅助 |
| DOI： |
| 投稿日期：2011-01-18 |
| 基金项目: |
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| INS-aided Template Correction Method for Matching |
| YAN Yuzhuang, HUANG Xinsheng, ZHENG Yongbin, XU Wanying |
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(College of Mechatronics Engineering and Automation, National Univ. of Defense Technology，Changsha 410073，China)
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| Abstract: |
| For the application to the ground target matching system of the aircraft, an INS-aided (Inertial Navigation System) template correction method is proposed. Firstly, the perspective projection model of the ground target was established according to the position of target and the pose (position and attitude) of camera. Then, the correction equations between the templates were deduced according to their pose parameters. By analyzing the relationship of the depth of field between each point and the centric of the target, the correction equations were transformed to an easier solved form and a complete correction algorithm was proposed. In the experiment, a virtual target simulation platform was employed to get the real scenes corresponding to the INS information. In comparing the corrected template with the real-time scene, it is found that they are apparently consistent in scale, rotation, perspective, etc. Tracking with the corrected template can avoid the template drift, and improve the performances significantly. |
| Keywords: image correction perspective projection correlated tracking INS-aided |
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