Sparse and adaptive fringe-enhancement efficiency analysis in 3D optical digital fringe-projection imaging

2018 ◽  
Author(s):  
Abel Kamagara ◽  
Xiangzhao Wang ◽  
Sikun Li ◽  
Changzhe Peng
Keyword(s):  
Efficiency Analysis ◽  
Fringe Projection ◽  
Digital Fringe Projection

Dynamics range enhancement in digital fringe projection technique

2015 ◽  
Vol 39 ◽  
pp. 243-251 ◽  
Author(s):  
Gelareh Babaie ◽  
Mehrdad Abolbashari ◽  
Faramarz Farahi
Keyword(s):  
Fringe Projection ◽  
Projection Technique ◽  
Digital Fringe Projection

Algorithms for Generating Adaptive Projection Patterns for 3-D Shape Measurement

2007 ◽  
Author(s):  
Tao Peng ◽  
Satyandra K. Gupta
Keyword(s):  
Point Cloud ◽  
Measurement Accuracy ◽  
Point Clouds ◽  
Fringe Projection ◽  
Shape Measurement ◽  
Digital Fringe Projection ◽  
Physical Experiments ◽  
Dense Point ◽  
Improved Performance ◽  
Fringe Patterns

Point cloud acquisition using digital fringe projection (PCCDFP) is a non-contact technique for acquiring dense point clouds to represent the 3-D shapes of objects. Most existing PCCDFP systems use projection patterns consisting of straight fringes with fixed fringe pitches. In certain situations, such patterns do not give the best results. In our earlier work, we have shown that in some situations, patterns that use curved fringes with spatial pitch variation can significantly improve the process of constructing point clouds. This paper describes algorithms for automatically generating adaptive projection patterns that use curved fringes with spatial pitch variation to provide improved results for an object being measured. In addition, we also describe the supporting algorithms that are needed for utilizing adaptive projection patterns. Both simulation and physical experiments show that, adaptive patterns are able to achieve improved performance, in terms of measurement accuracy and coverage, than fixed-pitch straight fringe patterns.

Improvement of fringe quality for phase extraction in double digital fringe projection

2019 ◽  
Vol 58 (09) ◽  
pp. 1 ◽  
Author(s):  
Ubaldo Uribe-López ◽  
David Asael Gutiérrez-Hernández ◽  
Francisco Javier Casillas-Rodríguez ◽  
Miguel Mora-Gonzalez ◽  
Jesús Muñoz-Maciel
Keyword(s):  
Fringe Projection ◽  
Phase Extraction ◽  
Digital Fringe Projection
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