scispace - formally typeset
Search or ask a question
Topic

Moiré pattern

About: Moiré pattern is a research topic. Over the lifetime, 1917 publications have been published within this topic receiving 27176 citations. The topic is also known as: moiré fringes & moire pattern.


Papers
More filters
Journal ArticleDOI
TL;DR: An image hiding technique based on chaotic vibration of deformable moire grating that leaks in a form of a pattern of time-averaged moire fringes when the deformable cover grating vibrates according to a chaotic law of motion with a predefined set of parameters.

8 citations

Journal ArticleDOI
Peter Langenbeck1
TL;DR: In this paper, the same instrument in different alignment enhances the sharpness of reflection multiple-beam fringes or reverses their contrast for a transmission-like appearance for wavefront mapping by coupling of two interferometers.
Abstract: Some advanced methods of wave-front mapping by coupling of two interferometers are described. Moire-like superposition of interferograms eliminates certain inherent interferometer errors. Moire interferometry indicates the direction of the order of interference.The same instrument in different alignment enhances the sharpness of reflection multiple-beam fringes or reverses their contrast for a transmissionlike appearance.

8 citations

Journal ArticleDOI
TL;DR: Phase-shifting in an achromatic configuration of moiré interferometry is explained and a numerical analysis proceeds to determine the total phase change between two diffracted beams that produceMoiré fringes.
Abstract: Phase-shifting in an achromatic configuration of moire interferometry is explained. The rigorous diffraction theory defines the phase of diffracted beams in terms of the pitch and the relative position of a compensator grating. A numerical analysis proceeds to determine the total phase change between two diffracted beams that produce moire fringes.

8 citations

01 Jan 2000
TL;DR: In this article, a frequency sweeping technique is proposed to measure the shape of objects with discontinuous height steps and spatially separated surfaces, which have been impossible to measure with conventional shadow moire topography.
Abstract: The frequency sweeping technique is proposed to measure the shape of objects with discontinuous height steps and / or spatially separated surfaces, which have been impossible to measure with conventional shadow moire topography. By controlling the amount of the rotation angle of the grating, the spatiotemporal moire patterns are produced with different contour intervals. The Fourier transform technique has been applied to analyze these patterns and obtain the temporal carrier frequency in which the height distribution of the object is involved. Experimental results show the validity of this method.

8 citations

Proceedings ArticleDOI
06 Jan 1994
TL;DR: The effect of optical moire as created by the interference of two grating patterns is a proven means to extend the range of some structured light contouring methods as has been used for years on glass scale encoders, the moire effect allows small displacements to be measured from lines well below the resolution limit of the camera system used to view the patterns as discussed by the authors.
Abstract: The effect of optical moire as created by the interference of two grating patterns, is a proven means to extend the range of some structured light contouring methods As has been used for years on glass scale encoders, the moire effect allows small displacements to be measured from lines well below the resolution limit of the camera system used to view the patterns This paper will present an overview of how this effect can be used effectively This analysis will include formulation of means to quantify the optical leverage effect of the moire for 3D contouring applications, and a quantitative comparison of resolution limits for moire versus straight structured light The benefits and limitations of optical moire leveraging will be discussed for good and bad applications of the technique Finally, the optical methods that can be employed to improve the images of moire patterns will be presented

8 citations


Network Information
Related Topics (5)
Optical fiber
167K papers, 1.8M citations
82% related
Laser
353.1K papers, 4.3M citations
80% related
Beam (structure)
155.7K papers, 1.4M citations
78% related
Semiconductor
72.6K papers, 1.2M citations
78% related
Diffraction
63.7K papers, 1M citations
78% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023181
2022321
202126
202048
201946
201844