LAUSR

About LAUSR
Donate
Contact Us

Follow us:

You are not signed in:

Sign Up!


   Articles with "fringe patterns" as a keyword



Background and amplitude encoded fringe patterns for 3D surface-shape measurement

Sign Up to like & get
recommendations! Published in 2017 at "Optics and Lasers in Engineering"

DOI: 10.1016/j.optlaseng.2017.02.014

Abstract: Abstract This paper presents a new fringe projection method for surface-shape measurement that uses background and amplitude encoded high-frequency fringe patterns. The background and amplitude, combined as a codeword, identify the wrapped phase fringe order… read more here.

Keywords: fringe patterns; shape measurement; fringe; background amplitude ... See more keywords

Adaptive oriented PDEs filtering methods based on new controlling speed function for discontinuous optical fringe patterns

Sign Up to like & get
recommendations! Published in 2018 at "Optics and Lasers in Engineering"

DOI: 10.1016/j.optlaseng.2017.07.018

Abstract: Abstract The filtering of discontinuous optical fringe patterns is a challenging problem faced in this area. This paper is concerned with oriented partial differential equations (OPDEs)-based image filtering methods for discontinuous optical fringe patterns. We… read more here.

Keywords: optical fringe; discontinuous optical; controlling speed; new controlling ... See more keywords

Structured light system calibration with unidirectional fringe patterns

Sign Up to like & get
recommendations! Published in 2018 at "Optics and Lasers in Engineering"

DOI: 10.1016/j.optlaseng.2018.02.015

Abstract: Abstract For the calibration of a structured light system, one type of highly accurate calibration method was developed by treating the projector as an inverse camera. This type of method typically creates pixel-to-pixel mapping between… read more here.

Keywords: structured light; calibration; fringe; light system ... See more keywords

Speckle-interferometric phase fringe patterns de-noising by using fringes’ direction and curvature

Sign Up to like & get
recommendations! Published in 2019 at "Optics and Lasers in Engineering"

DOI: 10.1016/j.optlaseng.2019.02.005

Abstract: Abstract We propose an adaptive filter method based on a deformable window shape to remove the noise of wrapped phase fringe patterns in electronic speckle pattern interferometry (ESPI). The filter kernel automatically adjusts its size,… read more here.

Keywords: fringe; direction; phase fringe; curvature ... See more keywords

A clustering framework based on FCM and texture features for denoising ESPI fringe patterns with variable density

Sign Up to like & get
recommendations! Published in 2019 at "Optics and Lasers in Engineering"

DOI: 10.1016/j.optlaseng.2019.03.015

Abstract: Abstract Denoising of electronic speckle pattern interferometry (ESPI) fringe patterns with variable density is challenging. In this paper, we present a method to denoise ESPI fringe patterns with variable density by constructing a clustering framework.… read more here.

Keywords: variable density; density; density fringes; patterns variable ... See more keywords

Binarization of optical fringe patterns with intensity inhomogeneities based on modified FCM algorithm

Sign Up to like & get
recommendations! Published in 2019 at "Optics and Lasers in Engineering"

DOI: 10.1016/j.optlaseng.2019.06.025

Abstract: Abstract Binarization of fringe patterns is a commonly used process in the fringe skeleton method for optical fringe pattern analysis. Most of the existing binarization algorithms of fringe patterns are based on the determination of… read more here.

Keywords: fringe; optical fringe; based modified; fringe patterns ... See more keywords

Omnidirectional depth segmentation using orthogonal fringe patterns and multi-scale enhancement

Sign Up to like & get
recommendations! Published in 2020 at "Optics and Lasers in Engineering"

DOI: 10.1016/j.optlaseng.2019.105890

Abstract: Abstract Phase-shifted depth segmentation, which is facilitated by the phase-shift invariance of the singular points in different wrapped phase maps, has the advantages of being immune to color, texture, and camera exposure. However, because the… read more here.

Keywords: phase; segmentation; depth segmentation; multi scale ... See more keywords

A dual-projector three-dimensional measurement model for shading problem of micro-scale object complex surface

Sign Up to like & get
recommendations! Published in 2023 at "Journal of Modern Optics"

DOI: 10.1080/09500340.2023.2206928

Abstract: Considering the inherent defects of the traditional triangulation method, always a shadow area is produced in the image collected by the camera. In this work, based on the traditional monocular vision measurement system, an auxiliary… read more here.

Keywords: problem; object; dual projector; measurement ... See more keywords

Windowed Fourier ridges for demodulation of carrier fringe patterns with nonlinearity: a theoretical analysis.

Sign Up to like & get
recommendations! Published in 2018 at "Applied optics"

DOI: 10.1364/ao.57.006198

Abstract: Accurately extracting phase or phase derivative is the most important requirement in optical metrology. However, in practice, there are many error sources, among which nonlinear distortion in fringe patterns is often encountered. Several techniques have… read more here.

Keywords: error; ridges demodulation; fourier ridges; windowed fourier ... See more keywords

Efficient phase retrieval of two-directional phase-shifting fringe patterns using geometric constraints of deflectometry.

Sign Up to like & get
recommendations! Published in 2019 at "Optics express"

DOI: 10.1364/oe.27.008195

Abstract: In the phase measuring deflectometry, two groups of fringe patterns in orthogonal directions are usually applied to establish the correspondences between the pixel pairs on the screen and camera. Usually, 16 phase-shifting fringe patterns with… read more here.

Keywords: phase shifting; efficient phase; shifting fringe; fringe patterns ... See more keywords

Objective quality assessment on angular spectrum for holographic fringe pattern.

Sign Up to like & get
recommendations! Published in 2025 at "Optics express"

DOI: 10.1364/oe.547154

Abstract: In this paper, as a first step, three requirements for an objective quality assessment corresponding to holographic fringe patterns are established, and what we believe to be a novel objective quality assessment method, PSNR-on-AS (peak… read more here.

Keywords: quality; fringe; fringe patterns; objective quality ... See more keywords