High precision two-dimensional spatial fringe analysis method

Arai, Yasuhiko; Yokozeki, Shunsuke; Shiraki, Kazuhiro; Yamada, Tomoharu

doi:10.1080/09500349708230692

Cited by 33 publications

(24 citation statements)

References 6 publications

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“…6,7 In the sampling moiré method, a specimen grating pattern placed on an object is recorded by a digital camera. Though the digitized image only shows the grating, a moiré fringe pattern appears by thinning out the pixels; that is, by sampling the image with a constant pixel pitch.…”

Section: Spatial Fringe Analysis Methods Using Amentioning

confidence: 99%

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Dynamic shape and strain measurements of rotating tire using a sampling moiré method

et al. 2011

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Shape measurements and strain distribution measurements are important for analyzing the behavior of a rotating tire. Recently, a twodimensional phase analysis method using phase-shifting moiré patterns, which are generated computationally from a two-dimensional grating image, was proposed. This method is well suited to the dynamic shape and strain measurement because the phase can be accurately obtained from a two-dimensional grating image. We show that it is possible to analyze the strain distribution and shape measurements of a moving object using a grating pattern attached to the surface of the specimen, and a dynamic shape and strain measurement system using the sampling moiré method is developed in this paper. The principle of the method and the experimental results of the method when applied to a rotating object are shown. C 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

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Section: Spatial Fringe Analysis Methods Using Amentioning

confidence: 99%

“…A spatial fringe analysis method using a sampling technique was proposed by Arai et al 6,7 The method is used to analyze the phase distribution of phase-shifted moiré images which are produced computationally from a grating image. The method is useful and accurate.…”

Section: Introductionmentioning

confidence: 99%

Dynamic shape and strain measurements of rotating tire using a sampling moiré method

et al. 2011

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“…Four moire fringes are produced from a single carrier fringe image using a spline function [12]. Then, in the neighbourhood of the boundary of obstructions, a phase-detecting operation must be performed without sufficient information.…”

Section: Phase Unwrapping In the Neighbourhood Of Obstructionsmentioning

confidence: 99%

“…In the 2D processing, firstly, the 2D moire fringe images are estimated using 2D interpolation processing [12].…”

Section: ( D )mentioning

confidence: 99%

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Automatic spatial fringe analysis method for two-dimensional fringes image including phase discontinuities by obstructions

Arai

Ishihara

Yokozeki

1998

Journal of Modern Optics

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A new two-dimensional (2D) automatic spatial fringe analysis method or analysing a fringe image including images of obstructions, such as a blade in an interferogram of pressure distribution around turbine blades, is proposed. In the analysis, first, the image of the obstruction is removed from the fringe image using the characteristics of spatial fringe analysis method. Second, the problem with respect to the phase discontinuities of the principal values of the inverse-trigonometric function is discussed. Then, the processing paths for the automatic phase-unwrapping processing are found using the concept of the directed graph. Third, fringe analysis of an image including noise is discussed by the new method. Finally, automatic 2D spatial fringe analysis can be realized with the calculation along processing paths. T h e experimental results show that the 2D fringe analysis for the image with obstructions can be performed accurately and automatically by the method proposed. In addition to the experiment, processing of an image with noise is discussed using the simulation by the proposed method. The simulation shows that this method is successful for processing an image with noise. An example of the application of this method to investigate the radiant heat of integratedcircuit chips is introduced.

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Development of Sampling Moire Camera for Landslide Prediction by Small Displacement Measurement

Nakabo

Fujigaki

Morimoto³

et al. 2011

Conference Proceedings of the Society for Experimental Mechanics Series

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High precision two-dimensional spatial fringe analysis method

Cited by 33 publications

References 6 publications

Dynamic shape and strain measurements of rotating tire using a sampling moiré method

Dynamic shape and strain measurements of rotating tire using a sampling moiré method

Automatic spatial fringe analysis method for two-dimensional fringes image including phase discontinuities by obstructions

Development of Sampling Moire Camera for Landslide Prediction by Small Displacement Measurement

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