- Tytuł:
- Method for improving sinusoidal quality of error diffusion binary encoded fringe used in phase measurement profilometry
- Autorzy:
-
Tian, Z.
Chen, W.
Su, X. - Powiązania:
- https://bibliotekanauki.pl/articles/174421.pdf
- Data publikacji:
- 2016
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
phase measurement profilometry
digital-light-processing projector
DLP projector
error diffusion algorithm
binary encoded grating - Opis:
- Insufficient resolution of digital-light-processing projector will degrade the sinusoidal quality of the binary encoded fringe pattern because of less sampling points in a fringe period, which will degrade the measurement accuracy if it is used in phase measurement profilometry. Two resolutions are proposed in the paper. One is that a cylindrical lens is introduced in the projecting light path of the measurement system to improve sinusoidal quality of the binary encoded fringe by elliptical low-pass filtering of the system. The other one is that superposition of multi-frame binary encoded gratings with different microstructure is to reduce the binary image noise for improving the measurement accuracy. Simulations and experiments verify the validity of the above two methods.
- Źródło:
-
Optica Applicata; 2016, 46, 2; 291-303
0078-5466
1899-7015 - Pojawia się w:
- Optica Applicata
- Dostawca treści:
- Biblioteka Nauki
Artykuł