Results 11 to 20 of about 176,543 (244)
RAPID AND AUTOMATED BODY MEASUREMENT OF CATTLE BASED ON STATISTICAL SHAPE MODEL [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023 The current methods of non-contact livestock body measurement directly deal with the low-quality point cloud data of livestock, which have low robustness and lack practicality.
Y. Bao +8 more
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Specular Surface Shape Measurement with Orthogonal Dual-Frequency Fourier Transform Deflectometry
Sensors, 2023 Three-dimensional (3D) shape measurement for specular surfaces is becoming increasingly important in various applications. A novel orthogonal dual-frequency fringe is proposed in the specular surface shape measurement to overcome the phase jumping and ...
Zhiming Li +4 more
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Dual-projector structured light 3D shape measurement
Applied Optics, 2020 Structured light illumination is an active three-dimensional scanning technique that uses a projector and camera pair to project and capture a series of stripe patterns; however, with a single camera and single projector, structured light scanning has issues associated with scan occlusions, multi-path, and weak signal reflections.
Ying Yu +3 more
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Two-wavelength digital holography through fog
Journal of the European Optical Society-Rapid Publications, 2023 Interferometric detection enables the acquisition of the amplitude and phase of the optical field. By making use of the synthetic wavelength as a computational construct arising from digital processing of two off-axis digital holograms, it is possible to
Gröger Alexander +5 more
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Applied Sciences, 2022 This paper considers the three-dimensional (3D) shape measurement of metal parts during an additive manufacturing process in a direct energy deposition (DED) printing system with high temperature and strong light; a binocular measurement system based on ...
Min Wang +6 more
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Sensors, 2020 Capturing the three-dimensional (3D) shape of the burden surface of a blast furnace (BF) in real-time with high accuracy is crucial for improving gas flow distribution, optimizing coke operation, and stabilizing BF operation.
Tianxiang Xu +4 more
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A Continuous Motion Shape-from-Focus Method for Geometry Measurement during 3D Printing
Sensors, 2022 In 3D printing, as in other manufacturing processes, there is a push for zero-defect manufacturing, mainly to avoid waste. To evaluate the quality of the printed parts during the printing process, an accurate 3D measurement method is required.
Jona Gladines +3 more
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Measuring Cubeness of 3D Shapes [PDF]
, 2009 In this paper we introduce a new measure for 3D shapes: cubeness. The new measure ranges over [0,1] and reaches 1 only when the given shapes is a cube. The new measure is invariant with respect to rotation, translation and scaling, and is also robust with respect to noise.
Carlos Martinez-Ortiz, Joviša Žunić
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Geoinformatics FCE CTU, 2011 In this article a new 3D measurement system along with the study on 3D printing technology is presented from the perspective of quality of reproduction. In the first part of the paper the 3DMADMAC|SPECTRAL system which integrates 3D shape with additional
Robert Sitnik +3 more
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Sensors, 2022 A multi-line structured light measurement method that combines a single-line and a three-line laser, in which precision sliding rails and displacement measurement equipment are not required, is proposed in this paper.
Qiucheng Sun +5 more
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