Phase extraction based on iterative algorithm using five-frame crossed fringes in phase measuring deflectometry
Sign Up to like & getrecommendations! Published in 2018 at "Optics and Lasers in Engineering"
DOI: 10.1016/j.optlaseng.2017.12.013
Abstract: Abstract In phase measuring deflectometry, two orthogonal sinusoidal fringe patterns are separately projected on the test surface and the distorted fringes reflected by the surface are recorded, each with a sequential phase shift. Then the… read more here.
Keywords: phase; phase measuring; frame crossed; five frame ... See more keywords
Refractometer based on phase measuring deflectometry using smartphone and machine learning assisted analysis
Sign Up to like & getrecommendations! Published in 2025 at "Physica Scripta"
DOI: 10.1088/1402-4896/ae11d7
Abstract: Measuring refractive index values in transparent liquids has broad applications across industrial, scientific, and technological domains for their identification and characterization. Here a phase measuring deflectometry technique with an artificial fringe system is demonstrated to… read more here.
Keywords: phase measuring; machine learning; measuring deflectometry; refractive index ... See more keywords
A Novel Phase Measuring Deflectometry Based on Spiral Fringes
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2024.3450086
Abstract: To address the problems of fringe compression in optical mirror measurement, this article shows a method for phase measuring deflectometry (PMD) of spiral fringes in polar coordinates. This method modulates the phase in two linearly… read more here.
Keywords: spiral fringes; phase measuring; polar coordinates; measuring deflectometry ... See more keywords
Improved Three-Mirror Geometry Calibration Method With Visual Guidance for Phase Measuring Deflectometry
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2025.3628438
Abstract: The phase measuring deflectometry (PMD) has been widely applied to measure specular objects. However, the placement of the calibration mirror is still challenging: excessively large or small angles may cause the calibration algorithm to fail… read more here.
Keywords: mirror; phase measuring; three mirror; measuring deflectometry ... See more keywords
Phase measuring deflectometry for obtaining 3D shape of specular surface: a review of the state-of-the-art
Sign Up to like & getrecommendations! Published in 2021 at "Optical Engineering"
DOI: 10.1117/1.oe.60.2.020903
Abstract: Abstract. Phase measuring deflectometry (PMD) is a superior technique to obtain three-dimensional (3D) shape information of specular surfaces because of its advantages of large dynamic range, noncontact operation, full-field measurement, fast acquisition, high precision, and… read more here.
Keywords: shape specular; shape; pmd; measuring deflectometry ... See more keywords
Model mismatch analysis and compensation for modal phase measuring deflectometry.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.000881
Abstract: The correspondence residuals due to the discrepancy between the reality and the shape model in use are analyzed for the modal phase measuring deflectometry. Slope residuals are calculated from these discrepancies between the modal estimation… read more here.
Keywords: phase measuring; modal phase; measuring deflectometry; compensation ... See more keywords
Deep learning-based Phase Measuring Deflectometry for single-shot 3D shape measurement and defect detection of specular objects.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.464452
Abstract: Phase Measuring Deflectometry (PMD) and Structured-Light Modulation Analysis Technique (SMAT) perform effectively in shape and defect measurements of specular objects, but the difficulty of giving consideration to accuracy and speed has also restricted the further… read more here.
Keywords: phase; measuring deflectometry; specular objects; deep learning ... See more keywords
Virtual reference surface phase measuring deflectometry for high-precision freeform surface measurement.
Sign Up to like & getrecommendations! Published in 2024 at "Optics express"
DOI: 10.1364/oe.545763
Abstract: The phase measuring deflectometry (PMD) method has limitations in the measurement of mirror surfaces with large local curvature, such as large integration errors and overly dense fringes. This restricts its application in the detection of… read more here.
Keywords: phase measuring; surface; freeform; measuring deflectometry ... See more keywords
Infrared phase measuring deflectometry by using defocused binary fringe.
Sign Up to like & getrecommendations! Published in 2021 at "Optics letters"
DOI: 10.1364/ol.431044
Abstract: Three-dimensional surface information acquisition of specular objects plays an important role in the fields of automobile industry, aerospace, cultural relic protection, intelligent robotics, equipment manufacturing, and so on. Most of the existing specular surface measurement… read more here.
Keywords: fringe; measuring deflectometry; phase measuring; binary fringe ... See more keywords