| 基于双路偏振影像分光的立体视觉 |
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| 引用本文： | 代煜,张建勋.基于双路偏振影像分光的立体视觉[J].物理学报,2011,60(8):84205-084205. |
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| 作者姓名： | 代煜 张建勋 |
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| 作者单位： | 南开大学机器人与信息自动化研究所,天津 300071 |
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| 基金项目： | 国家高技术研究发展计划(批准号:2007AA04Z247 )资助的课题. |
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| 摘 要： | 提出使用金属薄膜对双路偏振影像进行分光以实现三维立体视觉.由两台相同的液晶显示器出射的线偏振光分别被超薄铝膜反射和透射.由于超薄金属膜的光学常数与膜的厚度相关,采用分段线性函数建立铝膜的厚度与体积分数的关系,进而用Sheng模型估计铝膜的光学常数.证明了反射光和透射光都是椭圆偏振光且主轴接近垂直,从而可以通过偏振方向互相垂直的偏振片将两者加以区分,并使观察者对液晶显示器的图像产生深度感.考虑到双目入射光强度的均衡,计算了最优的铝膜厚度.实验结果与理论分析完全符合,验证了方法的正确性.
关键词：
立体视觉
液晶显示
光学常数
超薄金属膜
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| 关 键 词： | 立体视觉 液晶显示 光学常数 超薄金属膜 |
| 收稿时间： | 2010-10-27 |
Stereoscopic visualization based on splitting of two-way polarized image beams |
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| Dai Yu and Zhang Jian-Xun.Stereoscopic visualization based on splitting of two-way polarized image beams[J].Acta Physica Sinica,2011,60(8):84205-084205. |
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| Authors: | Dai Yu and Zhang Jian-Xun |
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| Institution: | Institute of Robotics and Automatic Information System, Nankai University, Tianjin 300071, China;Institute of Robotics and Automatic Information System, Nankai University, Tianjin 300071, China |
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| Abstract: | A thin metal film is introduced to split two-way polarized image beams,thereby accomplishing a stereoscopic three-dimensional display.Linearly polarized beams emitted by two uniform liquid crystal displays (LCDs) are reflected and transmitted by ultrathin aluminum film separately.Since optical constant of ultrathin metal film depends on film thickness,a piecewise linear function is used to obtain the relationship between the volume fraction of aluminum and the thickness of the film,and then the optical cons... |
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| Keywords: | stereoscopic visualization liquid crystal display optical constant ultrathin metal film |
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