国防科技大学学报2012，Vol.34Issue(6)：130-135,6.
机载平台野外立体场景弱小变化目标检测
Dim changing target detection of outside stereo scene for airborne platform
刘晓春 1于起峰 2雷志辉 1侯旺2
作者信息
- 1. 国防科技大学航天与材料工程学院,湖南长沙410073
- 2. 摄影测量与视觉导航湖南省重点实验室,湖南长沙410073
- 折叠
摘要
Abstract
We present a new method to detect the dim changing target for the image sequence of outside stereo scene obtained from the airborne camera. In order to compensate for the movement of the platform, a cascading image registration mode is proposed, which firstly uses the biological vision method to register the images to be detected coarsely and fast, and which then uses least square match based on invariant coefficient to register the images accurately. In order to compensate for the gray-scale changes between the images, a new histogram similarity transformation is proposed, which is ? able to handle not only linear gray-scale changes but also nonlinear gray-scale changes. In order to reduce the stereo effect, a sub-region division method is proposed, which divides an image into several sub-regions, and then calculates the affine transformation parameters for each corresponding sub-regions independently. Using this scheme, we can make sure that different sub-regions correspond to different geometric transformation parameters. Experimental results using many real images obtained from electro-optic pods clearly demonstrate the correctness and validity of the method.关键词
变化检测/目标检测/立体效应/图像配准/最小二乘匹配/生物视觉Key words
change detection/ target detection/ stereo effect/ image registration/ least square matching/ biological vision分类
信息技术与安全科学引用本文复制引用
刘晓春,于起峰,雷志辉,侯旺..机载平台野外立体场景弱小变化目标检测[J].国防科技大学学报,2012,34(6):130-135,6.
