Results 1 to 10 of about 7,173 (157)

A Targetless Method for Simultaneously Measuring Three-Degree-of-Freedom Angular Motion Errors with Digital Speckle Pattern Interferometry [PDF]

Sensors, 2023
As a guide rail is the basic motion unit of precision equipment, the measurement of and compensation for its motion errors are important preconditions for precision machining and manufacturing.
Lili Shi, Sijin Wu, Miao Yan, Haisha Niu
doaj   +3 more sources

A Strain Distribution Sensing System for Bone-Implant Interfaces Based on Digital Speckle Pattern Interferometry [PDF]

Sensors, 2019
This paper aims to provide an effective measurement method for the distribution of deformations and strains focusing on the response to external loading of bone-implant interfaces.
Ping Zhong, Zhisong Li, Huazheng Yang, Xin Tang, Guoxing He   +4 more
doaj   +3 more sources

Precise Detection of Wrist Pulse Using Digital Speckle Pattern Interferometry. [PDF]

Evid Based Complement Alternat Med, 2018
Pulse diagnosis is one of the four diagnostic methods of traditional Chinese medicine. However it suffers from the lack of objective and efficient detection method. We propose a noncontact optical method to detect human wrist pulse, aiming at the precise determination of the temporal and spatial distributions of pulse.
Zhang H, Wu S, Li W, Wang Y, Dong M, Yang L.   +5 more
europepmc   +4 more sources

Deep Learning-Based Wrapped Phase Denoising Method for Application in Digital Holographic Speckle Pattern Interferometry

Applied Sciences, 2020
This paper presents a new processing method for denoising interferograms obtained by digital holographic speckle pattern interferometry (DHSPI) to serve in the structural diagnosis of artworks.
Ketao Yan, Lin Chang, Michalis Andrianakis, Vivi Tornari, Yingjie Yu   +4 more
doaj   +2 more sources

An Anti-Noise-Designed Residual Phase Unwrapping Neural Network for Digital Speckle Pattern Interferometry

Optics
DSPI (Digital Speckle Pattern Interferometry) is a non-destructive optical measurement technique that obtains phase information of an object through phase unwrapping.
Biao Wang, Xiaoling Cao, Meiling Lan, Chang Wu, Yonghong Wang   +4 more
doaj   +2 more sources

Measurement of In-Plane Displacement in Two Orthogonal Directions by Digital Speckle Pattern Interferometry

Applied Sciences, 2019
The measurement of in-plane displacement in two orthogonal directions is of considerable significance for modern industries. This paper reports on a spatial carrier phase-shift digital speckle pattern interferometry (DSPI) for the simultaneous ...
Peizheng Yan, Xiangwei Liu, Fangyuan Sun, Qihan Zhao, Shimin Zhong, Yonghong Wang   +5 more
doaj   +2 more sources

The Application of Digital Holographic Speckle Pattern Interferometry to the Structural Condition Study of a Plaster Sample

Photonics
We use non-destructive Digital Holographic Speckle Pattern Interferometry (DHSPI), post-processing image analysis and one-dimensional exponential analysis to visualize, map and describe the structural condition of a plaster-based material.
Kyriaki Kosma, Vivi Tornari
doaj   +2 more sources

Three-dimensional deformation measurement based on digital speckle pattern interferometry

Journal of Applied Optics, 2020
Three-dimensional deformation can be converted into stress-strain distribution, which is the key parameter in material performance test and structure reliability analysis. Among many three-dimensional deformation measurement techniques, digital speckle pattern interferometry can measure the three-dimensional deformation information with high precision.
WANG Yonghong, BAO Fengqing, ZHANG Xiao, ZHAO Qihan, CHEN Weijie, YAN Peizheng   +5 more
openaire   +2 more sources

Quantitative assessment of soft tissue deformation using digital speckle pattern interferometry: studies on phantom breast models. [PDF]

J Med Imaging (Bellingham), 2017
Karuppanan U, Unni SN, Angarai GR.
europepmc   +2 more sources

Defect Isolation from Whole to Local Field Separation in Complex Interferometry Fringe Patterns through Development of Weighted Least-Squares Algorithm

Digital, 2023
In this paper, based on Gaussian 1σ-criterion and histogram segmentation, a weighted least-squares algorithm is applied and validated on digital holographic speckle pattern interferometric data to perform phase separation on the complex interference ...
Zhenkai Chen, Wenjing Zhou, Yingjie Yu, Vivi Tornari, Gilberto Artioli   +4 more
doaj   +1 more source