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首页> 外文会议>Electro-Optical and Infrared Systems: Technology and Applications IV; Proceedings of SPIE-The International Society for Optical Engineering; vol.6737 >Properties of light reflected from road signs in active imaging for driving safety
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Properties of light reflected from road signs in active imaging for driving safety

机译：主动成像中道路标志反射的光的特性，以确保行车安全

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摘要

Night-vision systems in vehicles are a new emerging technology. A crucial problem in active (illumination-based) systems is distortion of images by saturation and blooming, due to strong retro-reflections from road signs. In this work we quantified this phenomenon. We measured the Mueller matrices and the polarization state of the reflected light from three different types of road signs commonly used. Measurements of the reflected intensity were taken also with respect to the angle of reflection. We found that different types of signs have different reflection properties. It is concluded from our measurements that the optimal solution for attenuating the retro-reflected intensity is using a linear horizontal polarized light source and a linear vertical polarizer. Unfortunately, while the performance of this solution is good for two types of road signs, it is less efficient for the third sign type.
机译：车辆中的夜视系统是一种新兴技术。有源（基于照明）系统中的一个关键问题是由于路标强烈的向后反射，图像会由于饱和和泛光而失真。在这项工作中，我们量化了这种现象。我们测量了常用的三种不同类型的路标的Mueller矩阵和反射光的偏振态。还相对于反射角进行了反射强度的测量。我们发现不同类型的标志具有不同的反射特性。从我们的测量结果可以得出结论，衰减线性反射强度的最佳解决方案是使用线性水平偏振光源和线性垂直偏振器。不幸的是，尽管此解决方案的性能对于两种类型的路标都不错，但对于第三种类型的路标却效率较低。

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