Circular fringe projection profilometry

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August undefined, 2024

WebIn 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 … 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 …

Enhanced phase measurement profilometry for industrial 3D

WebTemporal 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 … WebMay 15, 2024 · We report that fringe projection profilometry is a well-established technique for optical 3D shape measurement. However, in many applications, it is desirable to make 3D measurements at very high speed, especially with fast moving or shape changing objects. In this work, we demonstrate a new 3D dynamic imaging technique, … how does amanda holden stay slim

An Improved Circular Fringe Fourier Transform Profilometry

Web期刊：Eighth Symposium on Novel Photoelectronic Detection Technology and Applications文献作者：Pengxu Zhou; Huikai Zhong; Cheng Gui; Yanjun Fu出版日期： ... Microscopic fringe projection profilometry system calibration based … 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 … 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 … how does amanda holden look so young

Circular fringe projection profilometry and 3D sensitivity …

Directly recognizing and removing the projector nonlinearity …

WebAug 12, 2024 · Fringe projection profilometry (FPP), as a common active optical three-dimensional (3D) measurement technology, has advantages of high-precision, non … WebOct 26, 2024 · Discussion on accurate phase–height mapping in fringe projection profilometry. Abstract. Establishing a highly accurate phase-to-height mapping … phot ihubWebAbstract 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 … phot fras red robin

"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 … " - Circular fringe projection profilometry

Circular fringe projection profilometry

Flexible calibration method for telecentric fringe projection ...

WebSep 6, 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 based … WebFeb 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 …

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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. 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.

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 … WebNov 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 …

WebOct 1, 2024 · Fringe projection techniques for 3D shape measurement usually employ linear fringes. • This method has a limit on measurable whole plane displacement. • New … WebSep 6, 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 based on the triangulation formed between the optical axis and the projected light rays of a projector.

WebNov 1, 2016 · In this Letter, a novel three-dimensional (3D) measurement method, called the circular fringe projection profilometry (CFPP), is proposed. Similar to the conventional …

WebJun 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;... how does amantadine work for parkinsonWebMar 1, 2024 · Typically there are 3 phase shifting directions and they are 1) one-direction FPP, i.e. phase directly shifting along a fixed angle, 2) two-direction FPP, i.e. phases … how does amantadine work for msWebFeb 4, 2024 · Three-dimensional measurement based on optimized circular fringe projection technique Opt Express. 2024 Feb 4;27 (3):2465-2477. doi: … phot deseign shelves officeWebFeb 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 … phot artWebSep 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. how does amatoxin get into the bodyWebCircular fringe Fourier transform profilometry (CFFTP) based on a triangulation system has the capability of whole out-of-plane measurement using fewer fringes. To the best of … phot image 52WebAug 1, 2024 · Fringe projection profilometry is widely used for three-dimensional (3D) measurements. System calibration is crucial to fringe projection systems, since it … how does amaryl work