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中文摘要：
车载式被动红外探雷系统中，由于存在探测系统的主光轴与地面法线的夹角，热像仪所获取的图像存在着较大的畸变，影响了地雷探测的准确率。从图像畸变产生的原因入手，根据从物平面到像平面的坐标映射算法，在VC＋＋6．0环境下实现了对畸变图像的矫正。实验结果表明，当红外热像仪置于2m高度，探测距离为20m时，矫正后图像与20m正视图像各对应像素点灰度值之差均小于8，具有相似性。本算法适用于红外探雷车辆的图像处理系统。
英文摘要：
For vehicle-borne landmine detection techniques, distortion inevitably exists in the downward-looking infrared images due to the inclination between the optic axis of the detector and the normal of the ground, which will reduce the accuracy of landmines recognition. The distortion causation is analyzed, and an algorithm of coordinate mapped from object plane to image plane is put forward. The program runs in the software VC＋＋6.0. The result shows when the thermal imager is put at the height of 2 m and the detection distance is 20 m, the gray difference between the rectified and the ideal images is less than 8, which shows the distorted images is effectively rectified. The algorithm and the program can be applied in the image processing of the infrared landmine detection system.
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