| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 807644 | Theoretical and Applied Mechanics Letters | 2016 | 5 Pages |
•The theoretical analysis of the nonlinear errors in digital fringe projection is deduced.•The LUT is made from measured phase map without extra calibration experiment.•The process of algorithm is convenient to be applied in real-time digital fringe projection.
Although the structured light system that uses digital fringe projection has been widely implemented in three-dimensional surface profile measurement, the measurement system is susceptible to non-linear error. In this work, we propose a convenient look-up-table-based (LUT-based) method to compensate for the non-linear error in captured fringe patterns. Without extra calibration, this LUT-based method completely utilizes the captured fringe pattern by recording the full-field differences. Then, a phase compensation map is established to revise the measured phase. Experimental results demonstrate that this method works effectively.
