Results 21 to 30 of about 328,446 (318)

A Lossless Watermarking Algorithm Based on Line Pairs for Vector Data

IEEE Access, 2020
With the increasing demand for copyright protection of high-precision and sensitive vector data in Geographical Information System (GIS), research on lossless watermarking has attracted more and more attention.
Na Ren, Qifei Zhou, Changqing Zhu, A-Xing Zhu, Weitong Chen   +4 more
doaj   +1 more source

Automatic Positioning of Street Objects Based on Self-Adaptive Constrained Line of Bearing from Street-View Images

ISPRS International Journal of Geo-Information, 2022
In order to realize the management of various street objects in smart cities and smart transportation, it is very important to determine their geolocation.
Guannan Li, Xiu Lu, Bingxian Lin, Liangchen Zhou, Guonian Lv   +4 more
doaj   +1 more source

A new technology for suspended sediment simulation in Lake Taihu, China: Combination of hydrodynamic modeling and remote sensing

Journal of Limnology, 2019
Sediment resuspension is closely related to the endogenetic release of nutrients in Lake Taihu. Thus, understanding the factors associated with sediment resuspension is important. In this study, a new technology, which integrates a hydrodynamic model and
Zhuo Zhang, Changchun Huang, Fei Guo, Zhiyao Song, Di Hu   +4 more
doaj   +1 more source

From Multi-User Virtual Environment to 3D Virtual Learning Environment [PDF]

, 2008
While digital virtual worlds have been used in education for a number of years, advances in the capabilities and spread of technology have fed a recent boom in interest in massively multi‐user 3D virtual worlds for entertainment, and this in turn has led
Daniel Livingstone, Edmund Edgarc, Kemp, Jeremy, Jeremy Kempb, Edmund Edgar, Daniel Livingstonea, Edgar, Edmund, Jeremy Kemp, Livingstone, Daniel   +8 more
core   +1 more source

The role of virtual reality in built environment education [PDF]

, 2008
This study builds upon previous research on the integration of Virtual Reality (VR) within the built environment curriculum and aims to investigate the role of VR and three-dimensional (3D) computer modelling on learning and teaching in a school of the ...
Horne, Margaret, Thompson, Emine Mine, E. Thompson, M. Horne   +3 more
core   +1 more source

Evaluation of Parameterization Schemes for Matric Potential in Frozen Soil in Land Surface Models: A Modeling Perspective

Water Resources Research, 2023
Soil matric potential (SMP) is an important variable in land surface models (LSMs) for regulating soil hydrological processes and highly influenced by soil ice in frozen ground.
Yi Zhao, Zhuotong Nan, Zetao Cao, Hailong Ji, Jianan Hu   +4 more
doaj   +1 more source

Copyright Protection Based on Zero Watermarking and Blockchain for Vector Maps

ISPRS International Journal of Geo-Information, 2021
Zero watermarking does not alter the original information contained in vector map data and provides perfect imperceptibility. The use of zero watermarking for data copyright protection has become a significant trend in digital watermarking research ...
Na Ren, Yazhou Zhao, Changqing Zhu, Qifei Zhou, Dingjie Xu   +4 more
doaj   +1 more source

myExperiment: Defining the Social Virtual Research Environment [PDF]

, 2008
The myExperiment Virtual Research Environment supports the sharing of research objects used by scientists, such as scientific workflows. For researchers it is both a social infrastructure that encourages sharing and a platform for conducting research ...
De Roure, David, Goderis, A, Newman, DR, Bhagat, Jiten, Antoon Goderis, Goderis, Antoon, David Newman, Goble, CA, Cruickshank, D, Don Cruickshank, Roure, DD, David De Roure, Danius Michaelides, Michaelides, DT, Michaelides, Danius, Cruickshank, Don, Carole Goble, Newman, David, Goble, Carole, Jiten Bhagat, Bhagat, J   +20 more
core   +1 more source

Construction of Stretching-Bending Sequential Pattern to Recognize Work Cycles for Earthmoving Excavator from Long Video Sequences

Sensors, 2021
Counting the number of work cycles per unit of time of earthmoving excavators is essential in order to calculate their productivity in earthmoving projects. The existing methods based on computer vision (CV) find it difficult to recognize the work cycles
Yiguang Wu, Meizhen Wang, Xuejun Liu, Ziran Wang, Tianwu Ma, Yujia Xie, Xiuquan Li, Xing Wang   +7 more
doaj   +1 more source

A New Urban Vitality Analysis and Evaluation Framework Based on Human Activity Modeling Using Multi-Source Big Data

ISPRS International Journal of Geo-Information, 2020
A quantitative study of urban vitality brings new insights for evaluating the external construction environment and internal development power of cities.
Shaojun Liu, Ling Zhang, Yi Long, Yao Long, Mianhao Xu   +4 more
doaj   +1 more source