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中文摘要：
为了满足智能车辆自动驾驶的需要，提出了一种真正单视点、多分辨率的反射—折射式系统，作为车载全向相机。该系统由光学反射器件和折射器件组成，由于使用了椭圆锥镜面的光学反射器件，故其是真正单视点的，能够为车辆前方场景提供比侧方更高的分辨率，同时具有宽广的视场。相机原型和仿真实验结果表明，它的水平分辨率和垂直视场随观察方位角的变化而变化，垂直分辨率不随方位角变化，可实现6倍的多分辨率和180°的大视场。
英文摘要：
Since existing vision system mounted in intelligent vehicle can not meet the requirements of high resolution in certain azimuth direction and wide field of view for automatic or assistant driving, a true single view point multi-resolution elliptical cone mirror catadioptric system with 180° horizontal field of view is suggested. The system provides higher resolution in look-ahead direction than that in lateral direction. An elliptical cone mirror is used as catoptric element and conventional perspective camera is used as dioptric element. Its vertical resolution, horizontal resolution and vertical field of view were calculated by pinhole imaging model and geometric optics image formation model. Simulating experiment results show that the system can realize 6 times of multi-resolution and 180° of field of view. Key words： Intelligent vehicle; Omni-directional camera; Multi-resolution; Elliptical cone mirror; Catadioptric system
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