Naslov
Temporal phase unwrapping using orthographic projection

Autori
Petković, Tomislav ; Pribanić, Tomislav ; Đonlić, Matea

Izvornik
Optics and lasers in engineering (0143-8166) 90 (2017); 34-47

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
temporal phase unwrapping ; orthographic projection ; multiple frequency phase shifting ; surface profilometry ; structured light

Sažetak
This paper proposes a novel temporal phase unwrapping method which is a generalization of the three commonly proposed approaches: hierarchical, heterodyne, and number theoretical phase unwrapping. The proposed unwrapping method is based on the orthographic projection of wrapped phases from the measurement space to the space of co-dimension 1. In the space of co-dimension 1 all unknown integer period-order numbers are computed simultaneously using a nearest-neighbor search on a fixed constellation of points. The proposed method offers new key insights about relationship between unwrapping success rate, noise limit, and maximum unwrapping range. We give example how the proposed method may be applied in the multiple frequency phase shifting profilometry.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Elektrotehnika, Računarstvo

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