Fig. 11
From: Dual frequency composite pattern temporal phase unwrapping for 3D surface measurement
The measurement result of surface reconstruction of the object, (a) Conventional multi-frequency TPU method, (b) Dual-frequency geometric-constraint TPU method and, (c) Single-frequency geometric-constraint TPU method, (d) DC-TPU method; (e)–(h) are the error of Figs. (a)-(d) compared with the three-frequency sixteen-step phase shift algorithm, respectively. (i)–(l) are the enlarged image of a small part of the measurement errors in Figs. (e)–(h), respectively.
