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Article
Publication date: 13 September 2011

Cheng Zhong, Hui Li and Xianfeng Huang

Orthophoto suffers from the relief displacement effects magnified by high resolution imaging sensors especially when mapping urban areas. True orthophotos eliminating…

Abstract

Purpose

Orthophoto suffers from the relief displacement effects magnified by high resolution imaging sensors especially when mapping urban areas. True orthophotos eliminating relief displacement with digital surface model (DSM) are presented to assure reliable interpretability and maintain the high quality of the available data. Previous efforts did not provide accurate and fast ways for generating true othorphoto. The purpose of this paper is to try to solve the problem by analyzing the complexity of algorithm processes and finding the optimum manner to allocate them.

Design/methodology/approach

In this paper, an optimum segmentation number for radial sweep is presented to achieve minimum complexity. First, the scan area, number of azimuth lines and visibility judgment area of radial sweep and spiral sweep method have been discussed with rigorous geometric theory, and then algorithm complexities of both methods are estimated with mathematical computation theory. Finally, minimum complexity of the methods is obtained with extreme point theory of differential calculus.

Findings

Experiments have demonstrated that the proposed method has the best efficiency, and is efficient to avoid “M‐potion” problem, and false occlusions and false visibilities caused by the rolling area, the incompatibility between the DSM and ground image resolution.

Originality/value

The deduction and experiments indicate that the proposed method is a robust, accurate, fast, and effective approach to generate high quality, true orthophoto at a large‐scale.

Article
Publication date: 8 October 2018

Rafal Perz and Kacper Wronowski

The purpose of this study is to show the potentials of a cost-effective unmanned aerial vehicles (UAV) system for agriculture industry. The current population growth rate…

Abstract

Purpose

The purpose of this study is to show the potentials of a cost-effective unmanned aerial vehicles (UAV) system for agriculture industry. The current population growth rate is so vast that farming industry must be highly efficient and optimized. As a response for high quality food demands, the new branch of the agriculture industry has been formed – the precision agriculture. It supports farming process with sensors, automation and innovative technologies. The UAV advantages over regular aviation are withering. Not only they can fly at lower altitude and are more precise but also offer same high quality and are much cheaper.

Design/methodology/approach

The main objective of this project was to implement an exemplary cost-effective UAV system with electronic camera stabilizer for gaining useful data for agriculture. The system was based on small, unmanned flying wing able to perform fully autonomous missions, a commercially available camera and an own-design camera stabilizer. The research plan was to integrate the platform and run numerous experimental flights over farms, fields and woods collecting aerial pictures. All the missions have been planned to serve for local farming and forest industries and cooperated with local business authorities.

Findings

In preliminary flight tests, the variety of geodetic, forest and agriculture data have been acquired, placed for post processing and applied for the farming processes. The results of the research were high quality orthophoto maps, 3D maps, digital surface models and images mosaics with normalized difference vegetation index. The end users were astonished with the high-quality results and claimed the high importance for their business.

Originality/value

The case study results proved that this kind of a small UAV system is exceptional to manage and optimize processes at innovative farms. So far only professional, high-cost UAV platforms or traditional airships have been applied for agriculture industry. This paper shows that even simple, commercially available equipment could be used for professional applications.

Details

Aircraft Engineering and Aerospace Technology, vol. 91 no. 2
Type: Research Article
ISSN: 1748-8842

Keywords

Article
Publication date: 9 October 2019

Rokas Jurevičius and Virginijus Marcinkevičius

The purpose of this paper is to present a new data set of aerial imagery from robotics simulator (AIR). AIR data set aims to provide a starting point for localization…

Abstract

Purpose

The purpose of this paper is to present a new data set of aerial imagery from robotics simulator (AIR). AIR data set aims to provide a starting point for localization system development and to become a typical benchmark for accuracy comparison of map-based localization algorithms, visual odometry and SLAM for high-altitude flights.

Design/methodology/approach

The presented data set contains over 100,000 aerial images captured from Gazebo robotics simulator using orthophoto maps as a ground plane. Flights with three different trajectories are performed on maps from urban and forest environment at different altitudes, totaling over 33 kilometers of flight distance.

Findings

The review of previous research studies show that the presented data set is the largest currently available public data set with downward facing camera imagery.

Originality/value

This paper presents the problem of missing publicly available data sets for high-altitude (100‒3,000 meters) UAV flights; the current state-of-the-art research studies performed to develop map-based localization system for UAVs depend on real-life test flights and custom-simulated data sets for accuracy evaluation of the algorithms. The presented new data set solves this problem and aims to help the researchers to improve and benchmark new algorithms for high-altitude flights.

Details

International Journal of Intelligent Unmanned Systems, vol. 8 no. 3
Type: Research Article
ISSN: 2049-6427

Keywords

Article
Publication date: 8 February 2016

Xinxia Liu, Anbing Zhang, Hefeng Wang and Haixin Liu

This paper aims to develope an integrated image processing method to investigate the spatiotemporal dynamics of Phragmites invasion in the Detroit River International…

Abstract

Purpose

This paper aims to develope an integrated image processing method to investigate the spatiotemporal dynamics of Phragmites invasion in the Detroit River International Wildlife Refuge on the basis of publically available sources.

Design/methodology/approach

This new approach integrates the standard time-series analysis of Landsat images with USDA National Agriculture Imagery Program (NAIP) imagery and USGS Digital Orthophoto Quarter Quads (DOQQ) datasets, which are either classified or manually interpreted with the aid of ground control points. Three different types of spatiotemporal dimensions are designed to test this integrated time-series image analysis method: the selected sites and selected time-points with high spatial resolution and sufficient validation data points, the intermediate time-series with continued yearly images and periodical validation data, and the long time-series with periodical images without enough validation data. The support vector machine (SVM) method was used to classify the Landast TM sequence images to detect the Phragmites invasion.

Findings

The habitat map produced by NAIP images and field collection data shows that the total Phragmites area of DRIWR in 2010 is 4221.87 acres without treatment areas and similar with the removed non-vegetation method. It is confirmed that the pre-classification method can obtain more accurate results.

Originality value

The test results show that the Landsat-5 data can be used for long-term environmental management and monitoring of Phragmites invasion and can achieve rehabilitation of invasion areas.

Details

World Journal of Engineering, vol. 13 no. 1
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 17 November 2014

Sulev Nurme, Zenia Kotval, Nele Nutt, Mart Hiob and Sirle Salmistu

The concepts of “historically valuable landscape,” “historical landscape space,” “landscape space attached to an object of cultural importance,” etc. seem to be understood…

Abstract

Purpose

The concepts of “historically valuable landscape,” “historical landscape space,” “landscape space attached to an object of cultural importance,” etc. seem to be understood by most landscape professionals, yet these terms are highly abstract with many possible interpretations. The protected zone of cultural monuments prescribed by law helps to ensure the preservation of these historic artifacts and signifiers of local heritage. The paper aims to discuss these issues.

Design/methodology/approach

This paper seeks to provide guidelines that can be articulated to protect cultural landscapes. These guidelines are based on a manorial core study was carried out in 2010 to analyze the changes in road networks and spatial systems of manors over the past 150 years. This study is part of a larger research effort on different aspects of Estonian baroque manor gardens.

Findings

Many landscapes may contain historically relevant objects and phenomena not protected by law, which, nevertheless form the basis of a unique local landscape. The altering of such a landscape not only changes its natural form, but may directly impact the cultural identity and milieu of the area, thereby affecting how its inhabitants relate to their environment.

Originality/value

Preservation of historic buildings and landscapes plays an important role particularly in relation to manor landscapes. This network has remained well preserved, and the rural landscape based on this Baltic-German manor culture is still strongly reflected in the current landscape through the existing historic landscape elements like housing, viewsheds, roads, etc. Without landscape analysis, it can be challenging for an outsider to understand the spatial context, especially when it has changed and evolved through the years.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. 4 no. 2
Type: Research Article
ISSN: 2044-1266

Keywords

Article
Publication date: 15 August 2016

Yasuhisa Kondo, Takehiro Miki, Taichi Kuronuma, Yuichi S. Hayakawa, Kyoko Kataoka and Takashi Oguchi

The purpose of this paper is to present a concurrent implementation of sustainable inventory for the UNESCO World Heritage sites of Bat, Al-Khutm and Al-Ayn in the…

Abstract

Purpose

The purpose of this paper is to present a concurrent implementation of sustainable inventory for the UNESCO World Heritage sites of Bat, Al-Khutm and Al-Ayn in the interior of Oman.

Design/methodology/approach

A digital heritage inventory (DHI) was developed through an action research to realize demands of the local agent and to co-design the solution. The Ministry of Heritage and Culture of Oman, the local agent, demanded to have archaeological information of the sites shared with foreign expeditions, which had worked at the sites for decades, for efficient heritage management, scientific research, outreach, and education. To this end, the Bat Digital Heritage Inventory (BatDHI) was implemented by a combination of network-access-ready database application, open source geographical information systems, and a web-based map service to incorporate and visualize previous works, which were concurrently cross-checked and updated by ground-truth surveys.

Findings

The online inventory made it possible to update information during archaeological fieldwork in real time and accelerated the decision-making process in heritage management by prompt data updates and visualization.

Research limitations/implications

The DHI is extendable for other sites or regions. It should also be considered to install Arches, an open-source suite of digital heritage inventories.

Practical implications

The BatDHI was implemented through the action research mentioned in the design/methodology/approach section and yielded the implications mentioned in the findings section.

Originality/value

This paper is a challenging application of transdisciplinary approach to the sustainable heritage management, in which researchers and societal stakeholders collaborate for co-design of research agendas, co-production of knowledge, and co-dissemination of outcomes.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. 6 no. 2
Type: Research Article
ISSN: 2044-1266

Keywords

Article
Publication date: 10 June 2014

Gabriele Garnero, Alessandro Cogoni, Alessandro Corrias, Luisa Manigas and Stefania Valentina Zedda

This article aims to describe how information and communications technology (ICT) has introduced a new approach in the handling of spatial data and related services and…

Abstract

Purpose

This article aims to describe how information and communications technology (ICT) has introduced a new approach in the handling of spatial data and related services and how Regione Autonoma della Sardegna, one of the Italian local governments, has been involved in an interesting growth that adopts ICT to provide spatial data and related services to itself and to its territory.

Design/methodology/approach

This article considers three aspects data and services interoperability and the implications of spatial data delivered through a multi-channel environment; the use of social web as a platform for volunteered geographical information in the public administration environment; and the application of mobile technologies.

Findings

The article represents the summary of recent activities in the Sardinia region and may constitute a paradigmatic example for other realities.

Originality/value

The research and activities conducted represent a point of view advanced and innovative in the field of territorial sciences and spatial planning on a regional scale.

Details

International Journal of Web Information Systems, vol. 10 no. 2
Type: Research Article
ISSN: 1744-0084

Keywords

Abstract

Details

Handbook of Transport Modelling
Type: Book
ISBN: 978-0-08-045376-7

Abstract

Details

Visual Pollution
Type: Book
ISBN: 978-1-80382-042-2

Article
Publication date: 17 May 2022

Da’ad Ahmad Albalawneh and M.A. Mohamed

Using a real-time road network combined with historical traffic data for Al-Salt city, the paper aims to propose a new federated genetic algorithm (GA)-based optimization…

Abstract

Purpose

Using a real-time road network combined with historical traffic data for Al-Salt city, the paper aims to propose a new federated genetic algorithm (GA)-based optimization technique to solve the dynamic vehicle routing problem. Using a GA solver, the estimated routing time for 300 chromosomes (routes) was the shortest and most efficient over 30 generations.

Design/methodology/approach

In transportation systems, the objective of route planning techniques has been revised from focusing on road directors to road users. As a result, the new transportation systems use advanced technologies to support drivers and provide them with the road information they need and the services they require to reduce traffic congestion and improve routing problems. In recent decades, numerous studies have been conducted on how to find an efficient and suitable route for vehicles, known as the vehicle routing problem (VRP). To identify the best route, VRP uses real-time information-acquired geographical information systems (GIS) tools.

Findings

This study aims to develop a route planning tool using ArcGIS network analyst to enhance both cost and service quality measures, taking into account several factors to determine the best route based on the users’ preferences.

Originality/value

Furthermore, developing a route planning tool using ArcGIS network analyst to enhance both cost and service quality measures, taking into account several factors to determine the best route based on the users’ preferences. An adaptive genetic algorithm (GA) is used to determine the optimal time route, taking into account factors that affect vehicle arrival times and cause delays. In addition, ArcGIS' Network Analyst tool is used to determine the best route based on the user's preferences using a real-time map.

Details

International Journal of Pervasive Computing and Communications, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1742-7371

Keywords

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