Filters








77,614 Hits in 7.1 sec

Combined Error Elimination for Three Dimensional Thermal Images Using Hybrid Digital Holography

IkHwan Kwon, Hyunchul Jung, SeolHee Yi, KyeongSuk Kim, KiYoul Kim, ChungKi Hong
2018 Proceedings (MDPI)  
This paper discusses a method for eliminating geometric optics errors that can occur when combining three-dimensional thermal images using hybrid digital holography.  ...  We obtained reconstructed digital holography using phase detection autofocus technique and arbitrary tilt plane correction.  ...  This method is based on the three-dimensional surface texturing function.  ... 
doi:10.3390/icem18-05378 fatcat:cci3sssgzvbe3jvcdml672fjzy

Height Estimation of Target Objects Based on Structured Light

Wei Liu, Yongsheng Zhao
2018 Advances in Multimedia  
The three-dimensional reconstruction of structured light has the characteristics of high precision, noncontact, and simple structure and is widely used in military simulation and cultural heritage protection  ...  In this paper, the height of the target object is estimated by using the word structure light.  ...  Acknowledgments The study was supported by a Project of Shandong Province Higher Educational Science and Technology Program (no. J14LN64).  ... 
doi:10.1155/2018/4189125 fatcat:kvbulwjvsndhdj7g5rctgphdpm

Acquisition and elaboration of superficial three-dimensional images in plastic and reconstructive surgery: Applications

Paolo Mezzana, N Scuderi, C Alfano
2005 Indian Journal of Plastic Surgery  
New developments in image acquisition systems permit transfer of three-dimensional data directly from existing objects.  ...  The three -dimensional computerized axial tomography for deep structures, and the laser scanners for superficial structure, quickly furnish (1-3 seconds for the laser scanners) useful information to plan  ...  However, because these devices are based on optical scan methods, they are not effective for surfaces that reflect or completely absorb the source of light. 3 Structured light scanner This technique  ... 
doi:10.4103/0970-0358.16491 fatcat:b53byga35zggfpmndr5s5onop4

Acquisition and elaboration of superficial three-dimensional images in plastic and reconstructive surgery: Applications

C Alfano, Paolo Mezzana, N Scuderi
2005 Indian Journal of Plastic Surgery  
New developments in image acquisition systems permit transfer of three-dimensional data directly from existing objects.  ...  The three -dimensional computerized axial tomography for deep structures, and the laser scanners for superficial structure, quickly furnish (1-3 seconds for the laser scanners) useful information to plan  ...  is based on projecting a light pattern on the object and to analyse the interaction of this pattern with the object's surface.  ... 
doi:10.1055/s-0039-1699065 fatcat:l4obbl3zvrf6xkxtvq563rci5y

High-Precision 3D Reconstruction for Small-to-Medium-Sized Objects Utilizing Line-Structured Light Scanning: A Review

Bin Cui, Wei Tao, Hui Zhao
2021 Remote Sensing  
Meanwhile, a review of approaches, algorithms, and techniques for high-precision 3D reconstruction utilizing line-structured light scanning, which is analyzed from a deeper perspective of elementary details  ...  based on technical principles.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs13214457 fatcat:6pnpg7rxcnaufcrbey2m335lnq

Cascaded machine learning model for reconstruction of surface topography from light scattering (Conference Presentation)

Mingyu Liu, Peter J. de Groot, Richard K. Leach, Pascal Picart
2020 Optics and Photonics for Advanced Dimensional Metrology  
In this paper, we propose a light scattering method to identify classes of structured surface topographies and estimate their main geometric properties.  ...  and based on a boundary element method.  ...  Engineering and Physical Sciences Research Council (EP/R028826/1), European Union's Horizon 2020 Research and Innovation Staff Exchange Programme (MNR4SCell, 734174), and the access to the University of  ... 
doi:10.1117/12.2555035 fatcat:jw3nyirkvzdpna3un3er3zxzpy

Sculpture 3D Modeling Method Based on Image Sequence

Xiaofei Liu
2021 Complexity  
In order to reduce the complexity of calculation, this paper proposes a new three-dimensional mesh model and a moving image restoration algorithm based on this model.  ...  feature point calibration required in three-dimensional motion and structure estimation.  ...  Conflicts of Interest e authors declare that they have no conflicts of interest regarding the publication of this paper.  ... 
doi:10.1155/2021/9916725 doaj:69999d1e37274c55964dbecbe690555f fatcat:coxfrtoy6jhkva645iv64e7h2q

Reconstructing the topology of optical polarization knots

Hugo Larocque, Danica Sugic, Dominic Mortimer, Alexander J. Taylor, Robert Fickler, Robert W. Boyd, Mark R. Dennis, Ebrahim Karimi
2018 Nature Physics  
Acknowledgments: The authors thank Frédéric Bouchard for his advice on using the SLM and  ...  These strands form complex self-winding looped three-dimensional structures that can even adopt knotted configurations.  ...  The presence of these knotted polarization singularities endows a nontrivial topological structure on the entire three-dimensional propagating wavefield.  ... 
doi:10.1038/s41567-018-0229-2 fatcat:7uydcy4hc5gqtoaj2t7xtyx344

Recreational Landscape Design Paradigm based on Three-Dimensional Reconstruction and Virtual City

2017 Revista Técnica de la Facultad de Ingeniería Universidad del Zulia  
This paper proposes the recreational landscape design paradigm based on the three-dimensional reconstruction and the virtual city.  ...  3D model from images based on which attention. (2) The AR system is places VR in the real environment to inspect looked from at present trend of development that, this kind the hypothesized experience  ...  ACKNOWLEDGEMENT This paper is supported by the 2017 Hainan provincial key research and development project: Quality Improvement and the Landscape Construction Technology of the Urban Recreational Space  ... 
doi:10.21311/001.39.12.04 fatcat:jj2oknttufbf5owfub7xn5eyna

Research Progress of Automated Visual Surface Defect Detection for Industrial Metal Planar Materials

Xiaoxin Fang, Qiwu Luo, Bingxing Zhou, Congcong Li, Lu Tian
2020 Sensors  
On the basis of three-dimensional data acquisition, the three-dimensional technologies are divided into stereoscopic vision, photometric stereo, laser scanner, and structured light measurement methods.  ...  This paper attempts to present a comprehensive survey on both two-dimensional and three-dimensional surface defect detection technologies based on reviewing over 160 publications for some typical metal  ...  a certain pattern of structured light onto the surface of an object and then forms a three-dimensional image modulated by the surface shape of the object to be measured.  ... 
doi:10.3390/s20185136 pmid:32916943 fatcat:qele6iuawnayrkjwywhkhjrmae

Three-Dimensional Structure Analysis of Urban Landscape Based on Big Data Technology and Digital Technology

Xiaozhou Yang, Fan Bai, Hai Dong
2021 Scientific Programming  
such as the light energy of the points on the diffuse reflection surface or the directional reflection surface.  ...  Moreover, this paper combines the actual needs of urban landscape design to construct an urban landscape design system based on big data technology and digital technology.  ...  Since then, the three-dimensional reconstruction based on the multiview motion restoration structure kicked off.  ... 
doi:10.1155/2021/7970870 fatcat:ht7ulf44nnholiprtpewxczpou

A comparative study of methods for surface area and three-dimensional shape measurement of coral skeletons

C. J. Veal, G. Holmes, M. Nunez, O. Hoegh-Guldberg, J. Osborn
2010 Limnology and Oceanography : Methods  
Rob Anders at the Centre for Spatial Information Science, University of Tasmania, for use of the optical texture scanner. Laser scanning was made possible through the assistance of Dr.  ...  Morag Wilson at the School of Veterinary Science, The University of Queensland. This manuscript has benefited from the comments and suggestions of two anonymous reviewers.  ...  Active shape capture systems commonly use optical triangulation, where the 3-D location of any one point on the object is calculated by computing the intersection of two lines in three-dimensional space  ... 
doi:10.4319/lom.2010.8.241 fatcat:ap2rrcgi4vfvhpdaowl3b5xr7y

Quantitative optical tomography of sub-surface heterogeneities using spatially modulated structured light

Soren D. Konecky, Amaan Mazhar, David Cuccia, Anthony J. Durkin, John C. Schotland, Bruce J. Tromberg
2009 Optics Express  
Results and discussion An example of a three-dimensional reconstructed image is shown in Fig. 2 .  ...  The center of the tube was located at a depth of 3 mm. Figure 2(b) is a volume rendering of the three-dimensional reconstructed absorption image.  ... 
doi:10.1364/oe.17.014780 pmid:19687956 pmcid:PMC2850818 fatcat:wlvsemxkkvcbzga4kr2tn62hau

Fourier-Transform-Based Surface Measurement and Reconstruction of Human Face Using the Projection of Monochromatic Structured Light

Bingquan Chen, Hongsheng Li, Jun Yue, Peng Shi
2021 Sensors  
signal contributed by multiply-scattered photons; and the high-contrast sinusoidal fringes of the projected structured light provide the condition for accurate reconstruction using one-shot measurement  ...  This work presents a new approach of surface measurement of human face via the combination of the projection of monochromatic structured light, the optical filtering technique, the polarization technique  ...  The 3D facial reconstruction approach based on one-shot image of the projected structured-light line pattern was recently suggested by Wang [16] , while the energy distribution of the projected pattern  ... 
doi:10.3390/s21072529 pmid:33916595 fatcat:bacclklx45eplfl37zpbgzqiwi

3D Rapid Modeling and Key Technology Analysis of Mountain Tunnel

Qiang SHI, Xu LIU, Qiang LIU, Hong-hao WAN
2019 DEStech Transactions on Computer Science and Engineering  
The paper comprehensively expounds the technical process of 3D modeling of tunnel structures based on 3D MAX modeling software, and deeply discusses the key technical problems.  ...  With the progress and development of science and technology, two-dimensional information display mode cannot meet the needs of information acquisition, three-dimensional information display mode has become  ...  An example of a 3D ground surface model based on elevation information is shown in Fig. 3 : In 3D MAX, stratum layers and boundary faces are added to form three-dimensional entities.  ... 
doi:10.12783/dtcse/iteee2019/28752 fatcat:3xns4f5rf5c37msebfxmmw2lhy
« Previous Showing results 1 — 15 out of 77,614 results