双摄像头-投影仪系统的结合校准方法,具有子像素精度特征提取.
Ran Jia1, Junpeng Xue1, Wenbo Lu1
1School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, China.
Sensors (Basel, Switzerland)
|March 28, 2024
概括
本研究介绍了双摄像头投影仪 (DCP) 系统的合校准方法,提高了复杂场景中的3D测量精度. 这种新的方法确保了投影仪参数的一致性,提高了系统的整体性能.
科学领域:
- 光学计量学 在光学计量学
- 计算机视觉 计算机视觉
- 3D重建的3D重建
背景情况:
- 双筒结构光系统对于3D测量至关重要.
- 双摄像头投影机 (DCP) 系统,包括两个单摄像头投影机 (SCP) 配对,用于复杂的场景.
- 在DCP系统中单独对SCP进行校准会导致投影仪参数不一致和精度降低.
研究的目的:
- 为DCP系统提出一个合校准方法,以确保投影仪参数的一致性.
- 在具有挑战性的环境中提高3D测量的精度和机动性.
- 为了解决DCP系统中单独的SCP校准的局限性.
主要方法:
- 对于DCP系统,使用直角相位目标的合校准方法.
- 通过在DCP系统中的双眼镜摄像头对3D坐标的独特确定.
- 使用未封装的相位和平面校准计算投影机图像平面坐标.
- 通过对直角相位目标的多项式拟合来提取子像素特征点.
主要成果:
- 确保投影仪参数在DCP系统中的一致性.
- 使用双眼相机实现了独特的3D坐标确定.
- 实验重投影错误发现小于0.033像素.
- 在校准准确度上显著改善.
结论:
- 拟议的合校准方法有效地解决了DCP系统中投影仪参数不一致的问题.
- 这种方法提高了3D测量的准确性,特别是在复杂和反射场景中.
- 使用直角相位目标和多项式拟合有助于子像素精度和改进的机动性.
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