Circular fringe projection profilometry
WebAug 1, 2024 · Fringe projection profilometry is widely used for three-dimensional (3D) measurements. System calibration is crucial to fringe projection systems, since it … WebIn phase-shifting fringe projection profilometry, the projector nonlinearity has been recognized as one of the main error-inducing factors, especially when only very few fringe patterns are available. For solving this issue, this paper presents a simple and effective method, that allows us to recognize and remove, directly from a calculated ...
Circular fringe projection profilometry
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WebIn fringe projection profilometry (FPP) based on temporal phase unwrapping (TPU), reducing the number of projecting patterns has become one of the most important works in recent years. To remove the $2\pi $ ambiguity independently, this paper proposes a TPU method … WebCircular 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 quickly because the absolute phase can be obtained by employing fewer fringes. However, the …
WebJan 1, 2016 · A projector with small field of view (FOV) is applied to achieve a full 3D reconstruction in our profilometry system. Experiments with a prototype demonstrate the validation and accuracy of the proposed calibration algorithm and system configuration. WebSep 21, 2014 · Abstract Industrial metrology and inspection systems commonly rely on phase measurement profilometry (PMP) using sinusoidal fringe patterns projecting, yielding dense, and accurate 3D reconstruction regardless of the presence of texture.
WebOct 26, 2024 · Discussion on accurate phase–height mapping in fringe projection profilometry. Abstract. Establishing a highly accurate phase-to-height mapping … WebJun 1, 2024 · Abstract Since Fringe Projection Profilometry (FPP) is an intensity-based coding strategy, it is prone to improper optical setup arrangement, surface texture and reflectance, uneven illumination distribution, among others. These conditions introduce errors in phase retrieval which lead to an inaccurate 3-D reconstruction.
WebMay 6, 2024 · Fig. 1. Fringe projection profilometry system. Full size image. The details of our experimental set-up are as following: the optical centers of camera and projector are located at the same distance from the reference plane; the optical axes of the camera and projector are coplanar; and the optical axis of camera is vertical to reference plane.
WebAug 12, 2024 · 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 quickly because the absolute phase can be obtai … chronic labral pathologyWebJun 1, 2024 · Fringe projection profilometry (FPP) [1] is an important three-dimensional (3D) measurement technique with the advantages of noncontact, high accuracy, high speed, and simple instrumentation;... chronic laryngitis cureWebJan 1, 2016 · A projector with small field of view (FOV) is applied to achieve a full 3D reconstruction in our profilometry system. Experiments with a prototype demonstrate … chronic l5 pars defectsWebMar 1, 2024 · In this paper, based on the extended epipolar geometry, we propose circular fringe projection profilometry to overcome the direction issue without doubling the number of patterns. First, by introducing the farthest and nearest points to the epipole in projector space, we can robustly control the spatial frequency of circular fringes in patterns. chronic laryngitis cancerWebFeb 26, 2024 · Circular fringe projection profilometry (CFPP) is a special kind of FPP with telecentric lenses [ 35 – 37 ]. The specialty lies in that CFPP recovers the 3D profile … chronic laryngitis home remediesWebNov 1, 2016 · In [15], circular fringe projection profilometry (CFPP) was presented to accomplish 3D measurement. CFPP can be regarded as a variant of FPP which is called … chronic l5-s1 radiculopathyWebAbstract In fringe projection profilometry (FPP), temporal phase unwrapping is an essential procedure to recover an unambiguous absolute phase even in the presence of large discontinuities or spatially isolated surfaces. So far, there are typically three groups of temporal phase unwrapping algorithms proposed in the literature: multi-frequency … chronic l4 radiculopathy