概括
本研究介绍了边缘投射特征测量 (FPP) 的双焦优化策略,以扩大测量深度. 新方法显著增加了高精度3D测量的可测深度范围.
科学领域:
- 光学计量学 在光学计量学
- 3D测量技术的使用
背景情况:
- 边缘投影谱 (FPP) 是一个关键的高精度3D测量技术.
- 双重失焦方法提高了FPP的速度,但将测量深度限制在孤立的区域.
- 现有的优化主要扩展了这些有限的深度范围的前部.
研究的目的:
- 开发一种新的策略,以扩大FPP的测量深度范围.
- 为了克服传统二进制失焦系统中孤立深度范围的局限性.
- 为了实现超大且连续的测量深度范围.
主要方法:
- 提出了一种使用圆柱形镜头组的双焦优化策略.
- 同时调整投影仪的焦距在午线和角平面.
- 根据光场分布特性优化焦距,以扩大适当的失焦区域.
主要成果:
- 成功创建了一个更大的,连续的正确失焦区域.
- 将测量深度范围从两个孤立范围 (120毫米和650毫米) 增加到950毫米的单一范围.
- 在扩大深度范围内获得了改进的测量结果.
结论:
- 双焦优化策略有效地克服了传统的FPP二进制失焦方法的深度限制.
- 这种方法可以实现超大且连续的测量深度范围.
- 该方法为更广泛范围的高精度3D测量提供了增强的性能.
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