Results 41 to 50 of about 5,483,277 (408)
Redundancy in spatial databases [PDF]
ACM SIGMOD Record, 1989 Spatial objects other than points and boxes can be stored in spatial indexes, but the techniques usually require the use of approximations that can be arbitrarily bad. This leads to poor performance and highly inaccurate responses to spatial queries. The situation can be improved by storing some objects in the index redundantly.
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Efficient Processing of Spatial Joins Using R-Trees [PDF]
, 1993 : In this paper, we show that spatial joins are very suitable to be processed on a parallel hardware platform. The parallel system is equipped with a so-called shared virtual memory which is well-suited for the design and implementation of parallel ...
Becker L. A. +10 more
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Improving Spatial neighbor Index Performance Based on [PDF]
Kirkuk Journal of Science, 2014 Spatial data consists of objects in space made up of points, lines, regions and data of higher dimensions. Access method is required to support efficient manipulation of the multi-dimensional spatial objects in the secondary storage.
Nzar Abdulqader Ali Payman Othman Rahem
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Spectral pre-modulation of training examples enhances the spatial resolution of the Phase Extraction Neural Network (PhENN) [PDF]
, 2018 The Phase Extraction Neural Network (PhENN) is a computational architecture, based on deep machine learning, for lens-less quantitative phase retrieval from raw intensity data.
Barbastathis, George, Li, Shuai
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BIM-BASED INDOOR PATH PLANNING CONSIDERING OBSTACLES [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 At present, 87 % of people’s activities are in indoor environment; indoor navigation has become a research issue. As the building structures for people’s daily life are more and more complex, many obstacles influence humans’ moving.
M. Xu +12 more
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Study of spatial database construction of smart mine
Gong-kuang zidonghua, 2014 The paper discussed construction models of spatial database of smart mine based on analysis of composition and characteristics of mine spatial data, and expounded construction of spatial data framework of smart mine from three aspects which are spatial ...
WANG Li, DU Jiusheng, JING Haitao
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REVIEW OF 3D GIS DATA FUSION METHODS AND PROGRESS [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 3D data fusion is a research hotspot in the field of computer vision and fine mapping, and plays an important role in fine measurement, risk monitoring, data display and other processes.
W. Hua +6 more
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Determinants Of Healthy Ageing For Older People In European Countries – A Spatio-Temporal Approach [PDF]
, 2016 The article aims to investigate the relationship between the length of the further life in healthy for men and women aged 65 years and selected factors in European countries in the period 2005-2012.
Suchecka, Jadwiga, Urbaniak, Bogusława
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RESEARCH ON SPLICING METHOD OF DIGITAL RELIC FRAGMENT MODEL [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 In the course of archaeological excavation, a large number of pieces of cultural relics were unearthed, and the restoration of these fragments was done manually by traditional arts and crafts experts. In this process, cultural relics experts often try to
X. Yan +6 more
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Topological queries in spatial databases
Proceedings of the fifteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems, 1996 We studytopological queriesover two-dimensional spatial databases. First, we show that the topological properties of semi-algebraic spatial regions can be completely specified using a classical finite structure, essentially the embedded planar graph of the region boundaries.
Victor Vianu +2 more
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