Results 31 to 40 of about 562,132 (184)
Three-dimensional measurements with a novel technique combination of confocal and focus variation with a simultaneous scan [PDF]
, 2016 The most common optical measurement technologies used today for the three dimensional measurement of technical surfaces are Coherence Scanning Interferometry (CSI), Imaging Confocal Microscopy (IC), and Focus Variation (FV). Each one has its benefits and
Artigas Pursals, Roger +4 more
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The Application of Preconditioned Alternating Direction Method of Multipliers in Depth from Focal Stack [PDF]
, 2017 Post capture refocusing effect in smartphone cameras is achievable by using focal stacks. However, the accuracy of this effect is totally dependent on the combination of the depth layers in the stack. The accuracy of the extended depth of field effect in
Corcoran, Peter, Javidnia, Hossein
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Robust Method for Position Measurement of Vertex of Polyhedron Using Shape from Focus
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2010 A robust measurement method for measuring the vertex position of a small polyhedron using 3D image processing is proposed. The shape from focus method is applied for obtaining 3D positions of surfaces of the polyhedron.
Takashi HARADA
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IEEE Access, 2020 Three-dimensional (3D) shape reconstruction from one or multiple observations is a primary problem of computer vision. Shape from Focus (SFF) is a passive optical method that uses multiple two-dimensional (2D) images with different focus levels.
Hoon-Seok Jang +2 more
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Generation of All-in-Focus Images by Noise-Robust Selective Fusion of Limited Depth-of-Field Images [PDF]
, 2013 The limited depth-of-field of some cameras prevents them from capturing perfectly focused images when the imaged scene covers a large distance range. In order to compensate for this problem, image fusion has been exploited for combining images captured ...
D., Puig +3 more
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Mine-used pick wear measurement system based on shape from focus
Gong-kuang zidonghua, 2019 For problems of complicated process, low accuracy and high cost in existing pick wear measurement methods, a mine-used pick wear measurement system based on shape from focus was designed. The collected sequence images of cone on top of pick are processed
LI Ning, DING Hua, WANG Yiliang
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Scanning electron microscopy of scales in cyprinid fish, Alburnoides bipunctatus (Blotch, 1782) [PDF]
Journal of Cell and Molecular Research, 2009 The normal and lateral line cycloid scales of a cyprinid fish; Alburnoides bipunctatus (Blotch, 1782) have been subjected to SEM to study their detailed structure. It shows the general architectural pattern of a cycloid cyprinid scale.
Hamid Reza Esmaeili
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, 2019 White light scanning interference (WLSI) microscopes provide an accurate surface topography of engineered surfaces. However, the measurement accuracy is substantially reduced in surfaces with low-reflectivity regions or high roughness, like a surface ...
Altamar-Mercado, Hernando +2 more
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Towards comprehensive characterisation and modelling of the forming and wrinkling mechanics of engineering fabrics [PDF]
, 2018 Through a combination of direct measurement and inverse modelling, a route to characterising the main mechanical forming properties of engineering fabric is demonstrated.
Alvarez, Marcos Fernandez +2 more
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Applied Sciences, 2018 Digital holography is a well-established technology for optical quality control in industrial applications. Two common challenges in digital holographic measurement tasks are the ambiguity at phase steps and the limited depth of focus.
Tobias Seyler +5 more
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