Autofocusing method for high-resolution three-dimensional profilometry
Autofocusing method for high-resolution three-dimensional profilometry
复制标题
高分辨率三维轮廓术的自动聚焦方法
DOI：
10.1364/ol.382431
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发表时间：
2020-01
期刊：
影响因子：
3.6
通讯作者：
Xiaowei Hu;Guijin Wang;Jae-Sang Hyun;Yujin Zhang;Huazhong Yang;Song Zhang
中科院分区：
文献类型：
--
作者：
Xiaowei Hu;Guijin Wang;Jae-Sang Hyun;Yujin Zhang;Huazhong Yang;Song Zhang
最先进的高精度三维轮廓测量系统通常使用固定焦距的镜头，这使得它们难以测量深度变化较大的场景，特别是动态变化的场景。为了满足这一需求，本信函提出了一种新颖的，据我们所知，采用数字条纹投影技术的高分辨率3D轮廓术的自动对焦方法，方法是：(1)为使用电可调透镜的系统开发一种新的连续几何参数模型，(2)采用焦平面检测算法。通过实验验证了该方法的有效性。
State-of-the-art high-accuracy three-dimensional (3D) profilometry systems typically use a lens with a fixed focal length, making it difficult for them to measure scenes with large depth variations, especially dynamically changing ones. To address this need, this Letter proposes a novel, to the best of our knowledge, autofocusing method for high-resolution 3D profilometry with a digital fringe projection technique by (1) developing a novel continuous geometric parameter model for systems using electrically tunable lenses and (2) employing a focal plane detection algorithm. The validity of the proposed method is confirmed by experiments.