scholarly journals The Geomorphometry of Rainfall-Induced Landslides in Taiwan Obtained by Airborne Lidar and Digital Photography

10.5772/8305 ◽  
2009 ◽  
Author(s):  
Jin-King Liu ◽  
Kuan-Tsung Chang ◽  
Jiann-Yeou Rau ◽  
Wei-Cheng Hsu ◽  
Zu-Yi Liao ◽  
...  
Keyword(s):  
Digital Photography ◽  
Airborne Lidar

Digital Photography

1999 ◽  
Vol 9 (3) ◽  
pp. 85-87
Author(s):  
Bessam Farjo
Keyword(s):  
Digital Photography

Urban energetics applications and Geomatic technologies in a Smart City perspective

2015 ◽  
Vol 6 (1) ◽  
pp. 19-29 ◽  
Author(s):  
G. Bitelli ◽  
P. Conte ◽  
T. Csoknyai ◽  
E. Mandanici
Keyword(s):  
Smart City ◽  
Laser Scanning ◽  
Near Infrared ◽  
Three Dimensional ◽  
Energy Sector ◽  
Primary Objective ◽  
Airborne Lidar ◽  
City Management ◽  
Urban Context ◽  
Research Areas

The management of an urban context in a Smart City perspective requires the development of innovative projects, with new applications in multidisciplinary research areas. They can be related to many aspects of city life and urban management: fuel consumption monitoring, energy efficiency issues, environment, social organization, traffic, urban transformations, etc. Geomatics, the modern discipline of gathering, storing, processing, and delivering digital spatially referenced information, can play a fundamental role in many of these areas, providing new efficient and productive methods for a precise mapping of different phenomena by traditional cartographic representation or by new methods of data visualization and manipulation (e.g. three-dimensional modelling, data fusion, etc.). The technologies involved are based on airborne or satellite remote sensing (in visible, near infrared, thermal bands), laser scanning, digital photogrammetry, satellite positioning and, first of all, appropriate sensor integration (online or offline). The aim of this work is to present and analyse some new opportunities offered by Geomatics technologies for a Smart City management, with a specific interest towards the energy sector related to buildings. Reducing consumption and CO2 emissions is a primary objective to be pursued for a sustainable development and, in this direction, an accurate knowledge of energy consumptions and waste for heating of single houses, blocks or districts is needed. A synoptic information regarding a city or a portion of a city can be acquired through sensors on board of airplanes or satellite platforms, operating in the thermal band. A problem to be investigated at the scale A problem to be investigated at the scale of the whole urban context is the Urban Heat Island (UHI), a phenomenon known and studied in the last decades. UHI is related not only to sensible heat released by anthropic activities, but also to land use variations and evapotranspiration reduction. The availability of thermal satellite sensors is fundamental to carry out multi-temporal studies in order to evaluate the dynamic behaviour of the UHI for a city. Working with a greater detail, districts or single buildings can be analysed by specifically designed airborne surveys. The activity has been recently carried out in the EnergyCity project, developed in the framework of the Central Europe programme established by UE. As demonstrated by the project, such data can be successfully integrated in a GIS storing all relevant data about buildings and energy supply, in order to create a powerful geospatial database for a Decision Support System assisting to reduce energy losses and CO2 emissions. Today, aerial thermal mapping could be furthermore integrated by terrestrial 3D surveys realized with Mobile Mapping Systems through multisensor platforms comprising thermal camera/s, laser scanning, GPS, inertial systems, etc. In this way the product can be a true 3D thermal model with good geometric properties, enlarging the possibilities in respect to conventional qualitative 2D images with simple colour palettes. Finally, some applications in the energy sector could benefit from the availability of a true 3D City Model, where the buildings are carefully described through three-dimensional elements. The processing of airborne LiDAR datasets for automated and semi-automated extraction of 3D buildings can provide such new generation of 3D city models.

Foto-Etnografi dalam Proses Penciptaan Karya Seni Fotografi

Panggung ◽  
2013 ◽  
Vol 23 (2) ◽  
Author(s):  
Arief Datoem
Keyword(s):  
Social Life ◽  
Systematic Approach ◽  
Deep Understanding ◽  
Digital Photography ◽  
Cultural Representation ◽  
Visual Anthropology ◽  
Artistic Creation ◽  
Ethnographic Approach ◽  
The Subject ◽  
Emotional Approach

ABSTRACT This article aims at deepening the possibility of utilizing the art of photography that is rich of sig- nificance of the socio-cultural representation. The visual ethnographic field or photo-ethnography, which is relatively new, can provide assistance and answer for this. Therefore, the author has tried a form of collaboration between the photo-ethnographic approach and the sense approach in doing his research on the subject in order to obtain the deep understanding and the truth significance attached to them. The method of digital photography art creation which is intuitively the basis of the art cre- ation in digital domain, then was tried to be formulated, based on heuristics research in the process of the art of digital photography. This concept was developed from the experience in the field of digital photography and visual anthropology, guided by the basic theories of creativity, quantum theory in art, and theory of artistic creation that has existed before. Through emotional approach as a method, along with the structured systematic approach of photo-ethnography and with the deep awareness of the environment and social life of the subject leads to the creation of the image that tends to be better and more meaningful, more productive in a social sense, and offers a credible empiric documentation. Keywords: photo-ethnography, photography art works  ABSTRAK Artikel ini dibuat dalam upaya melakukan pendalaman mengenai kemungkinan peman- faatan seni fotografi yang kaya makna representasi sosio-kultural. Bidang etnografi visual atau foto-etnografi yang relatif masih baru, dapat memberikan bantuan dan jawaban un- tuk hal ini. Oleh karena itu penulis mencoba suatu bentuk kolaborasi antara pendekatan foto-etnografi dengan pendekatan rasa ketika melakukan penelitian terhadap subjek agar diperoleh pemahaman mendalam serta makna kebenaran yang menyertainya. Metode penciptaan seni fotografi digital yang merupakan dasar dari penciptaan seni secara intu- itif dalam domain digital, kemudian dicoba dirumuskan, berdasarkan penelaahan heu- ristik dalam proses seni fotografi digital. Konsep ini dikembangkan dari pengalaman di bidang fotografi digital dan antropologi visual, dipandu oleh teori-teori dasar kreativitas, teori kuantum dalam seni, dan teori penciptaan seni yang telah ada sebelumnya. Melalui pendekatan emosional sebagai metode, disertai dengan pendekatan sistematis yang ter- struktur dari foto-etnografi dan dengan kesadaran yang mendalam mengenai lingkungan dan kehidupan sosial subjek mengarah pada penciptaan gambaran yang cenderung lebih baik dan lebih bermakna, lebih produktif dalam arti sosial, dan menawarkan dokumentasi empiris yang kredibel. Kata kunci: foto-etnografi, karya seni fotografi

Mapping and Monitoring of the Land Use/Cover Changes in the Wider Area of ltanos, Crete, Using Very High Resolution EO Imagery With Specific Interest in Archaeological Sites

2019 ◽  
Author(s):  
Sawyer Reid stippa ◽  
George Petropoulos ◽  
Leonidas Toulios ◽  
Prashant K. Srivastava
Keyword(s):  
High Resolution ◽  
Spatial Resolution ◽  
Satellite Images ◽  
Archaeological Site ◽  
Digital Photography ◽  
Archaeological Sites ◽  
Large Area ◽  
High Resolution Imagery ◽  
Site Mapping ◽  
Rule Sets

Archaeological site mapping is important for both understanding the history as well as protecting them from excavation during the developmental activities. As archaeological sites generally spread over a large area, use of high spatial resolution remote sensing imagery is becoming increasingly applicable in the world. The main objective of this study was to map the land cover of the Itanos area of Crete and of its changes, with specific focus on the detection of the landscape’s archaeological features. Six satellite images were acquired from the Pleiades and WorldView-2 satellites over a period of 3 years. In addition, digital photography of two known archaeological sites was used for validation. An Object Based Image Analysis (OBIA) classification was subsequently developed using the five acquired satellite images. Two rule-sets were created, one using the standard four bands which both satellites have and another for the two WorldView-2 images their four extra bands included. Validation of the thematic maps produced from the classification scenarios confirmed a difference in accuracy amongst the five images. Comparing the results of a 4-band rule-set versus the 8-band showed a slight increase in classification accuracy using extra bands. The resultant classifications showed a good level of accuracy exceeding 70%. Yet, separating the archaeological sites from the open spaces with little or no vegetation proved challenging. This was mainly due to the high spectral similarity between rocks and the archaeological ruins. The satellite data spatial resolution allowed for the accuracy in defining larger archaeological sites, but still was a difficulty in distinguishing smaller areas of interest. The digital photography data provided a very good 3D representation for the archaeological sites, assisting as well in validating the satellite-derived classification maps. All in all, our study provided further evidence that use of high resolution imagery may allow for archaeological sites to be located, but only where they are of a suitable size archaeological features.

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