Results 11 to 20 of about 283,852 (314)
Joint Geometry and Color Projection-Based Point Cloud Quality Metric
IEEE Access, 2022 Point cloud coding solutions have been recently standardized to address the needs of multiple application scenarios. The design and assessment of point cloud coding methods require reliable objective quality metrics to evaluate the level of degradation ...
Alireza Javaheri +3 more
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CLUSTERING OF WALL GEOMETRY FROM UNSTRUCTURED POINT CLOUDS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019 The automated reconstruction of Building Information Modeling (BIM) objects from point cloud data is still ongoing research. A key aspect is retrieving the proper observations for each object. After segmenting and classifying the initial point cloud, the
M. Bassier, M. Vergauwen
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Point Cloud Geometry Compression Based on Multi-Layer Residual Structure
Entropy, 2022 Point cloud data are extensively used in various applications, such as autonomous driving and augmented reality since it can provide both detailed and realistic depictions of 3D scenes or objects.
Jiawen Yu +4 more
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Joint Geometry and Color Point Cloud Denoising Based on Graph Wavelets
IEEE Access, 2021 A point cloud is an effective 3D geometrical presentation of data paired with different attributes such as transparency, normal and color of each point. The imperfect acquisition process of a 3D point cloud usually generates a significant amount of noise.
Muhammad Abeer Irfan, Enrico Magli
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The geometry of point particles [PDF]
Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2002 32 pages, including 8 ...
Atiyah, M. F., Sutcliffe, P. M.
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Layered Projection-Based Quality Assessment of 3D Point Clouds
IEEE Access, 2021 Point clouds are subject to various distortions during point cloud processing missions, any of which may lead to quality degradation. Consequently, predicting point cloud quality has attracted a lot of attention. In this paper, a layered projection-based
Tianxin Chen +7 more
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Multiscale Point Cloud Geometry Compression [PDF]
2021 Data Compression Conference (DCC), 2021 Recent years have witnessed the growth of point cloud based applications because of its realistic and fine-grained representation of 3D objects and scenes. However, it is a challenging problem to compress sparse, unstructured, and high-precision 3D points for efficient communication.
Wang, Jianqiang +3 more
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Points in algebraic geometry [PDF]
Journal of Pure and Applied Algebra, 2015 We give scheme-theoretic descriptions of the category of fibre functors on the categories of sheaves associated to the Zariski, Nisnevich, tale, rh, cdh, ldh, eh, qfh, and h topologies on the category of separated schemes of finite type over a separated noetherian base.
Gabber, Ofer, Kelly, Shane
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Simple microfluidic stagnation point flow geometries [PDF]
Biomicrofluidics, 2016 A geometrically simple flow cell is proposed to generate different types of stagnation flows, using a separation flow and small variations of the geometric parameters. Flows with high local deformation rates can be changed from purely rotational, over simple shear flow, to extensional flow in a region surrounding a stagnation point. Computational fluid
Dockx, Greet +6 more
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Automatic Geometry Generation from Point Clouds for BIM
Remote Sensing, 2015 The need for better 3D documentation of the built environment has come to the fore in recent years, led primarily by city modelling at the large scale and Building Information Modelling (BIM) at the smaller scale.
Charles Thomson, Jan Boehm
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