Results 21 to 30 of about 133,684 (265)

The Effects of Green Roofs on Outdoor Thermal Comfort, Urban Heat Island Mitigation and Energy Savings

open access: yesAtmosphere, 2020
There is growing attention to the use of greenery in urban areas, in various forms and functions, as an instrument to reduce the impact of human activities on the urban environment.
Guglielmina Mutani, Valeria Todeschi
doaj   +1 more source

Image based 3D city modeling : Comparative study [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
3D city model is a digital representation of the Earth’s surface and it’s related objects such as building, tree, vegetation, and some manmade feature belonging to urban area. The demand of 3D city modeling is increasing rapidly for various engineering
S. P. Singh, K. Jain, V. R. Mandla
doaj   +1 more source

Improving accuracy of automated 3-D building models for smart cities

open access: yesInternational Journal of Digital Earth, 2019
Photorealistic three-dimensional (3-D) models are important tools for urban and disaster management planning because they contain useful visual and spatial information for assessing the situation and responding accordingly.
Byungyun Yang, Jungil Lee
doaj   +1 more source

Versioning of 3D City Models for Municipality Applications: Needs, Obstacles and Recommendations

open access: yesISPRS International Journal of Geo-Information, 2021
The use of 3D city models is changing from visualization to complex use cases where they act as 3D base maps. This requires links to registers and continuous updating of the city models. Still, most models never change or are recreated instead of updated.
Helen Eriksson, Lars Harrie
doaj   +1 more source

SIMPLIFIED 3D CITY MODELS FROM LIDAR

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Abstract. Aerial laser scan data is widely used to produce 2 1/2D digital elevation models automatically. However, creating full 3D city models from this data is a complex task. A simplified 3D model, like a 2 1/2D model with vertical walls will be easier to produce automatically, especially when the model is not produced to look nice, but just to give
Lesparre, J. (author)   +1 more
openaire   +4 more sources

Scalable Evaluation of 3D City Models [PDF]

open access: yesIGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
The generation of 3D building models from Very High Resolution geospatial data is now an automatized procedure. However , urban areas are very complex and practitioners still have to visually assess the correctness of these models and detect reconstruction errors.
Ennafii, Oussama   +3 more
openaire   +2 more sources

On the Reliable Generation of 3D City Models from Open Data

open access: yesUrban Science, 2020
A 3D model communicates more effectively than a 2D model, hence the applications of 3D city models are rapidly gaining significance in urban studies. However, presently, there is a dearth of free of cost, high-resolution 3D city models available for use.
Renoy Girindran   +5 more
doaj   +1 more source

VIRTUAL 3D CITY MODELING: TECHNIQUES AND APPLICATIONS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
3D city model is a digital representation of the Earth's surface and it's related objects such as Building, Tree, Vegetation, and some manmade feature belonging to urban area.
S. P. Singh, K. Jain, V. R. Mandla
doaj   +1 more source

Heritage Smart City Mapping, Planning and Land Administration (Hestya)

open access: yesISPRS International Journal of Geo-Information, 2022
A smart city is a concept of urban development that requires different technologies to integrate all city elements into a sustainable city system. Land administration, including three-dimensional (3D) cadaster and planning, is a pre-condition for having ...
Deni Suwardhi   +5 more
doaj   +1 more source

A virtual globe-based time-critical adaptive visualization method for 3D city models

open access: yesInternational Journal of Digital Earth, 2018
3D city models, which are important items of content on the virtual globe, are characterized by complicated structures and large amounts of data. These factors make the visualization of 3D city models highly dependent upon the performance of computer ...
Wumeng Huang, Jing Chen
doaj   +1 more source

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