Circular fringe projection profilometry
WebOct 26, 2024 · Discussion on accurate phase–height mapping in fringe projection profilometry. Abstract. Establishing a highly accurate phase-to-height mapping … 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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WebFeb 4, 2024 · Circular fringe projection profilometry (CFPP) is a recently proposed optical three-dimensional (3D) measurement technique. Theoretically, its optimal measurement accuracy should precede that of the conventional fringe projection profilometry. In practice, the measurement accuracy is impacted by many factors, and … WebApr 6, 2024 · Abstract Fringe projection profilometry is widely used in different areas; it has the benefit of retrieving full-field height information from a single or multiple fringe patterns with high...
WebPhase demodulation is an essential image processing stage required by digital fringe projection profilometers. Currently, several approaches for phase demodulation have been proposed. In this work, a set of phase demodulation methods useful for digital fringe projection profilometry is presented. WebMar 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.
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. WebFeb 4, 2024 · Three-dimensional measurement based on optimized circular fringe projection technique Opt Express. 2024 Feb 4;27 (3):2465-2477. doi: …
WebIn this Letter, a novel three-dimensional (3D) measurement method, called the circular fringe projection profilometry (CFPP), is proposed. Similar to the conventional fringe …
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 … chino correctional facility jobsWebIn fringe projection profilometry, high-order harmonics information of distorted fringe will lead to errors in the phase estimation. In order to solve this problem, a point-wise phase estimation method based on a neural network (PWPE-NN) is proposed in this paper. The complex nonlinear mapping relationship between the gray values and the phase under … chino country storeWebIn 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 … granite reservior fishing reportWebTemporal phase-unwrapping methods for fringe projection profilometry, mainly represented by the multi-frequency and multi-wavelength classes, are fundamental to recovering the 3D information from the continuous phase, also allowing measure discontinuities and isolated objects. In this paper, it is proposed a temporal phase … chino creationsWebAbstract 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 … chino countertops midlothian vaWebMay 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. chin ocrWebJan 9, 2024 · State-of-the-art high-accuracy three-dimensional (3D) profilometry systems typically use a lens with a fixed focal length, making it difficult for them to measure scenes with large depth variations, especially dynamically changing ones. To address this need, this Letter proposes a novel, to the best of our knowledge, autofocusing method for high … chino country club