Increasing territorial planning activities through viewshed analysis

Hognogi, Gheorghe-Gavrilă; Pop, Ana-Maria; Mălăescu, Simona; Nistor, Mărgărit‐Mircea

doi:10.1080/10106049.2020.1730450

Cited by 12 publications

(10 citation statements)

References 22 publications

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“…Other methodological improvements may also include the modelling of atmospheric and environmental conditions, as they can reduce visibility and viewshed extent [9]. Changes in viewshed may be also determined using cumulative viewshed analysis [86]. However, our aim was to check how the viewshed from individual viewpoints has changed from the position of an observer-tourist.…”

Section: Discussionmentioning

confidence: 99%

Assessment of Changes in a Viewshed in the Western Carpathians Landscape as a Result of Reforestation

Sobala

Myga-Piątek

Szypuła

2020

Land

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A viewshed analysis is of great importance in mountainous areas characterized by high landscape values. The aim of this research was to determine the impact of reforestation occurring on former pasturelands on changes in the viewshed, and to quantify changes in the surface of glades. We combine a horizontal and a vertical approach to landscape analysis. The changes in non-forest areas and the viewshed from viewpoints located in glades were calculated using historical cartographic materials and a more recent Digital Elevation Model and Digital Surface Model. An analysis was conducted using a Visibility tool in ArcGIS. The non-forest areas decreased in the period 1848–2015. The viewshed in the majority of viewpoints also decreased in the period 1848–2015. In the majority of cases, the maximal viewsheds were calculated in 1879/1885 and 1933 (43.8% of the analyzed cases), whereas the minimal ones were calculated in 2015 (almost 57.5% of analyzed cases). Changes in the viewshed range from 0.2 to 23.5 km2 with half the cases analyzed being no more than 1.4 km2. The results indicate that forest succession on abandoned glades does not always cause a decline in the viewshed. Deforestation in neighboring areas may be another factor that has an influence on the decline.

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Section: Discussionmentioning

confidence: 99%

Assessment of Changes in a Viewshed in the Western Carpathians Landscape as a Result of Reforestation

Sobala

Myga-Piątek

Szypuła

2020

Land

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“…Traditional algorithms like R3, R2 and XDraw have their respective strengths and weaknesses-R3 features high precision yet a lengthy computation time, while R2 and XDraw are more efficient but less accurate [6]. In recent years, visibility analysis has been widely applied across various domains, including travel route planning [7,8], scenic resource allocation and conservation [9][10][11][12] and site selection for fire lookout towers [13,14]. Different contexts require tailored optimization strategies.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Evaluation of the View of the Landscape Using a Visibility Analysis Optimization Algorithm

Li,

An,

Zhang

et al. 2024

Applied Sciences

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Visual evaluation of the landscape is an important way to judge landscape quality. In this study, by optimizing the vertical angle and relative slope parameters of a visibility analysis algorithm, we intuitively and quantitatively display visibility grid data on the landscape based on tourists’ viewpoints and realize the transformation from making calculations only for the visible area to quantitatively evaluating the quality of visually experiencing the landscape considering parallax. We consider a variety of landscape visual influence factors (visible area, landscape water system distribution, number of landscape resources) to construct an index system for evaluating landscape visual effects. Finally, a set of improved landscape visual evaluation methods is proposed by integrating the analytic hierarchy process (AHP) and an optimization algorithm into the visibility analysis. Validation of the case study of the ancient town Fenghuang shows that these methods can effectively distinguish good and bad landscape viewpoints in a scenic area and support planning and design decisions on the related spatial layout and viewing platform. This study provides a new perspective for developing a quantitative, intelligent digital landscape analysis system.

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“…The presence or absence of a LOS is essential for various novel technologies that require data retrieval or acquisition by communication or visual-observation towers. Interpretation of the topography and LOS calculations are being used in ecology, geography and environmental sciences, as well as in archaeology [2][3][4][5], and landscape architecture [6][7][8][9]. A prominent example for the importance of LOS comes from movement ecology.…”

Section: Introductionmentioning

confidence: 99%

ViewShedR: a new open-source tool for cumulative, subtractive and elevated line-of-sight analysis

Arnon,

Uzan,

Handel

et al. 2023

R. Soc. open sci.

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Many environmental and ecological studies require line of sight (LOS) and/or viewshed analyses. While tools for performing these analyses from digital elevation models (DEMs) are widespread, they are either too restrictive, inaccessible or pricey and difficult to use. This methodological gap is potentially imperative for scholars using solutions like telemetry tracking systems or spatial ecology landscape mapping. Here we present ViewShedR—a free, open-source and intuitive graphical user-interface application for performing LOS calculations, including cumulative, subtractive (areas covered by towers A + B or by A but not by B, respectively), and elevated-target analyses. ViewShedR is implemented in the widely used R environment, thus facilitating usage and further modification by end-users. We provide two working examples for ViewShedR in the context of permanent animal-tracking systems requiring simultaneous tag-detection by multiple towers (receivers): first, the ATLAS system for terrestrial animals in the Harod Valley, Israel; and second, an acoustic telemetry array for marine animals in the Dry Tortugas, Florida. ViewShedR allowed effective tower deployment and finding partially detected tagged animals in the ATLAS system. Similarly, it allowed us to identify reception shadows cast by islands in the marine array. We hope ViewShedR will facilitate deployment of tower arrays for tracking, communication networks and other ecological applications.

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Increasing territorial planning activities through viewshed analysis

Cited by 12 publications

References 22 publications

Assessment of Changes in a Viewshed in the Western Carpathians Landscape as a Result of Reforestation

Assessment of Changes in a Viewshed in the Western Carpathians Landscape as a Result of Reforestation

Quantitative Evaluation of the View of the Landscape Using a Visibility Analysis Optimization Algorithm

ViewShedR: a new open-source tool for cumulative, subtractive and elevated line-of-sight analysis

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