PMID- 32906978
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200910
IS  - 1094-4087 (Electronic)
IS  - 1094-4087 (Linking)
VI  - 28
IP  - 17
DP  - 2020 Aug 17
TI  - Real-time high dynamic range 3D measurement using fringe projection.
PG  - 24363-24378
LID - 10.1364/OE.398814 [doi]
AB  - Fringe projection profilometry (FPP) is a widely used technique for real-time 
      three-dimensional (3D) shape measurement. However, it tends to compromise when 
      measuring objects that have a large variation range of surface reflectivity. In 
      this paper, we present a FPP method that can increase the dynamic range for 
      real-time 3D measurements. First, binary fringe patterns are projected to 
      generate grayscale sinusoidal patterns with the defocusing technique. Each 
      pattern is then captured twice with different exposure values in one projection 
      period. With image fusion, surfaces under appropriate exposure are retained. To 
      improve the real-time performance of high dynamic range (HDR) 3D shape 
      measurements, we build a binocular fringe projection profilometry system that 
      saves the number of patterns by geometry constraint. Further, to ensure the 
      accuracy and robustness of HDR 3D measurements, we propose a mixed phase 
      unwrapping method that can reduce phase unwrapping errors for dense fringe 
      patterns. Experiment results show that the proposed method can realize accurate 
      and real-time 3D measurement for HDR scenes at 28 frames per second.
FAU - Zhang, Liang
AU  - Zhang L
FAU - Chen, Qian
AU  - Chen Q
FAU - Zuo, Chao
AU  - Zuo C
FAU - Feng, Shijie
AU  - Feng S
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Opt Express
JT  - Optics express
JID - 101137103
SB  - IM
EDAT- 2020/09/11 06:00
MHDA- 2020/09/11 06:01
CRDT- 2020/09/10 01:02
PHST- 2020/09/10 01:02 [entrez]
PHST- 2020/09/11 06:00 [pubmed]
PHST- 2020/09/11 06:01 [medline]
AID - 434134 [pii]
AID - 10.1364/OE.398814 [doi]
PST - ppublish
SO  - Opt Express. 2020 Aug 17;28(17):24363-24378. doi: 10.1364/OE.398814.