Intensity range extension method for three-dimensional shape measurement in phase-measuring profilometry using a digital micromirror device camera

2008 ◽  
Vol 47 (29) ◽  
pp. 5400 ◽  
Author(s):  
Shien Ri ◽  
Motoharu Fujigaki ◽  
Yoshiharu Morimoto
Keyword(s):  
Three Dimensional ◽  
Range Extension ◽  
Shape Measurement ◽  
Digital Micromirror Device ◽  
Extension Method ◽  
Phase Measuring Profilometry ◽  
Intensity Range ◽  
Dimensional Shape ◽  
Three Dimensional Shape

Three-dimensional shape measurement based on binary fringe conventional projection

2019 ◽  
Vol 41 (14) ◽  
pp. 4073-4083 ◽  
Author(s):  
Guangkai Fu ◽  
Yiping Cao ◽  
Yapin Wang ◽  
Yingying Wan ◽  
Lu Wang ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Shape Measurement ◽  
Measured Object ◽  
3D Shape ◽  
Phase Measuring Profilometry ◽  
3D Shape Measurement ◽  
Large Step ◽  
Dimensional Shape ◽  
Three Dimensional Shape ◽  
Error Suppression

A three-dimensional (3D) shape measurement method based on binary fringe conventional projection is proposed. In traditional 3D shape measurement methods based on binary fringe projection, the binary fringe is used as an approximate sinusoidal fringe by defocusing projection or even directly used as an approximate sinusoidal fringe by nonlinear error suppression feature of large-step phase measuring profilometry (PMP). In the proposed method (Prop), neither defocusing projection is needed nor large-step PMP must be used. When the binary fringe is conventionally projected on the measured object, just by filtering operation in spatial frequency domain from the captured deformed pattern, the nearly unbroken sinusoidal deformed pattern can be extracted efficiently. While N ( N≥3) frames binary fringes with 1/ N period misalignment between each adjacent fringe are conventionally projected onto the measured object sequentially, the corresponding nearly unbroken N-step sinusoidal deformed patterns extracted from the N frames captured deformed patterns can be used to reconstruct the 3D shape of the measured object with N-step PMP algorithm. The experimental results show the feasibility and validity of the Prop. It is more flexible for its optional fringe period and optional phase-shifting steps. It has potential application in the real-time 3D shape measurement.

Three-dimensional Shape Measurement using Non-contact Line Laser Probe

2021 ◽  
Vol 2021.74 (0) ◽  
pp. F41
Author(s):  
Masanori KAJIKI ◽  
Syuhei KUROKAWA ◽  
Terutake HAYASHI ◽  
Kuniharu YAMAMOTO
Keyword(s):  
Contact Line ◽  
Three Dimensional ◽  
Shape Measurement ◽  
Laser Probe ◽  
Dimensional Shape ◽  
Three Dimensional Shape

scholarly journals Software package for testing three-dimensional shape measurement methods using structured lighting

2021 ◽  
Vol 2057 (1) ◽  
pp. 012087
Author(s):  
S V Dvoynishnikov ◽  
V O Zuev ◽  
I K Kabardin ◽  
D V Kulikov ◽  
V V Rahmanov
Keyword(s):  
Software Package ◽  
Three Dimensional ◽  
Measurement Methods ◽  
Shape Measurement ◽  
Structured Lighting ◽  
Lighting Conditions ◽  
Ambient Lighting ◽  
Dimensional Shape ◽  
Shadow Maps ◽  
Three Dimensional Shape

Abstract This work aims at creating a universal software package for the development and testing of triangulation methods using structured lighting for measuring the three-dimensional geometry of objects in difficult ambient lighting conditions. As a result, a software package meeting the stated requirements is created. Lighting is based on the Fong model. A method for preloading objects is implemented to optimize the operation of the software package. An accelerated method for creating shadow maps is proposed and implemented. The developed software package is shown to successfully perform all required functions.

Sign in / Sign up

Export Citation Format

Share Document