Results 11 to 20 of about 3,752 (140)
Research on highly dynamic 3D measurement method based on RGB color fringe projection
Journal of the European Optical Society-Rapid Publications, 2023 Metal parts with highly dynamic areas often appear in industrial production measurements. However, if the traditional fringe projection technique is used to project fringe onto the surface of these metal parts, the light energy will be excessively ...
Fu Ling, Gao Dingshan
doaj +1 more source
High-speed, high-accuracy 3D shape measurement based on binary color fringe defocused projection [PDF]
Journal of the European Optical Society-Rapid Publications, 2015 A widely used method in high-speed 3D shape measurement, color-code fringe projection requires the projection of only one image. In traditional color-code method, the projected fringe is compounded by sinusoidal fringes, grayscale value distribution ...
Li B., Fu Y., Wang Z., Zhang J.
doaj +1 more source
Intensity-Averaged Double Three-Step Phase-Shifting Algorithm with Color-Encoded Fringe Projection
Photonics, 2022 Fringe projection profilometry (FPP) has been broadly employed for three-dimensional shape measurements. However, the measurement accuracy suffers from gamma nonlinearity.
Yuwei Wang +3 more
doaj +1 more source
An Improved Circular Fringe Fourier Transform Profilometry
Sensors, 2022 Circular fringe projection profilometry (CFPP), as a branch of carrier fringe projection profilometry, has attracted research interest in recent years. Circular fringe Fourier transform profilometry (CFFTP) has been used to measure out-of-plane objects ...
Qili Chen +3 more
doaj +1 more source
Applied Sciences, 2021 Fringe projection profilometry has been intensively studied for several decades. However, due to the limitation of the field range of a single projector, when measuring objects with complex surfaces, there are always shadow areas in the captured images ...
Yuanjun Zhang +3 more
doaj +1 more source
Sensors, 2021 Conventional uniaxial techniques generally require shifting objects or projection grating with the assistance of a high-precision mechanical moving component. To overcome this limitation, we propose a novel uniaxial 3-D shape measurement system with auto-
Hui Ren +5 more
doaj +1 more source
Applied Sciences, 2022 This paper considers the three-dimensional (3D) shape measurement of metal parts during an additive manufacturing process in a direct energy deposition (DED) printing system with high temperature and strong light; a binocular measurement system based on ...
Min Wang +6 more
doaj +1 more source
High-speed 3D optical sensing for manufacturing research and industrial sensing applications
TESEA, Transactions on Energy Systems and Engineering Applications, 2022 This paper presents examples of high-speed 3D optical sensing for research and applications in the manufacturing community. Specifically, this paper will focus on the fringe projection technique as a special technology that can be extremely beneficial ...
Beiwen Li
doaj +1 more source
Qualification concept for optical multi-scale multi-sensor systems [PDF]
Journal of Sensors and Sensor Systems, 2016 This article describes a new qualification concept for dimensional measurements on optical measuring systems. Using the example of a prototypical multi-scale multi-sensor fringe projection system for production-related inspections of sheet-bulk metal ...
A. Loderer, T. Hausotte
doaj +1 more source
IEEE Access, 2021 Temporal phase unwrapping is among the most robust and efficient phase unwrapping methods in fringe projection profilometry. They can recover the fringe orders even in the presence of surface discontinuities. However, fringe order errors may occur due to
Yiwei Zhang +5 more
doaj +1 more source