ABSTRACT Surface Fourier transform profilometry (FTP) is a technique used for reconstructing three-dimensional (3-D) surface topography using light. It has been widely used in machine vision for biomedical and biometric automations, providing solutions beyond conventional 2-D imaging. This paper proposes an implementation of the handheld pocket-size FTP for 3-D surface profile imaging using a projector-enabled Samsung Galaxy Beam smartphone. In the implementation, a crossed-optical-axes geometry of the FTP is formed by using a mirror positioned over the phone’s projector via an adjustable tilt mounting bracket. Experimental proof-of-concept of the proposed profilometry is done by implementing conventional and non-phase shifting FTPs with different diffuse test objects. The experimental results obtained by using the non-phase shifting technique are in good agreement with those of the direct contact measurement. Besides having superiority of compactness, the proposed profilometry paves the way for the development of real-time 3-D profiling and printing through internet or Bluetooth interconnection.

中文翻译：

---

使用支持投影仪的智能手机进行手持式袖珍傅里叶变换轮廓测量

摘要 表面傅里叶变换轮廓仪 (FTP) 是一种使用光重建三维 (3-D) 表面形貌的技术。它已广泛用于生物医学和生物识别自动化的机器视觉，提供超越传统二维成像的解决方案。本文提出了使用支持投影仪的三星 Galaxy Beam 智能手机实现手持袖珍型 FTP 的 3D 表面轮廓成像。在实施中，FTP 的交叉光轴几何形状是通过使用位于手机投影仪上方的镜子通过可调倾斜安装支架形成的。通过使用不同的漫反射测试对象实施常规和非相移 FTP 来完成所提出的轮廓测量法的实验概念验证。使用非相移技术获得的实验结果与直接接触测量的结果非常吻合。除了具有紧凑性的优势外，所提出的轮廓测量法还为通过互联网或蓝牙互连开发实时 3D 轮廓分析和打印铺平了道路。