Adapting 2D positional control methodologies based on linear elements to 3D

Mozas‐Calvache, Antonio Tomás; López, Francisco Javier Ariza

doi:10.1179/1752270614y.0000000107

Cited by 15 publications

(18 citation statements)

References 14 publications

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“…The second is called Mean Displacement (MD). This method was originally described by Skidmore and Turner (1992) for 2D lines and was extended to 3D lines by Mozas and Ariza (2015). It consists of the determination of the enclosed area between both homologous lines divided by the length of the line.…”

Section: Figure 1 Proposed Methodologymentioning

confidence: 99%

“…It consists of the determination of the enclosed area between both homologous lines divided by the length of the line. The determination of the enclosed area for 3D lines was solved by Mozas and Ariza (2015) using a 3D triangulation between the lines (Figure 2b). The third method to be applied is the VIM method (Mozas and Ariza, 2011), which provides values of mean displacement (VIM-D) and average increments (VIM-I).…”

Section: Figure 1 Proposed Methodologymentioning

confidence: 99%

“…In addition, some positional control methods have also been described derived from these models (Mozas and Ariza, 2010). The main positional control methodologies based on lines, described until this moment, are based on the determination of uncertainty using distance calculations (Skidmore and Turner, 1992;Abbas et al, 1995;Ariza, 2011 andAriza, 2015) or buffer determination (Goodchild and Hunter, 1997). These methodologies can be used or adapted for modelling the displacements of linear elements involved in a landslide.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Landslides Based on Displacements of Lines

Mozas‐Calvache¹,

Pérez-García²,

Castillo³

et al. 2016

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Commission VII, WG VII/5 KEY WORDS: UAS, photogrammetry, landslide, road, linear elements ABSTRACT:Nowadays, the development of UAS has allowed the obtaining of high resolution and accurate cartographic products, such as DSMs and orthoimages. These products can be used in studies of the evolution of landslides. The stability of slopes is a main issue because, among others, it can suppose a serious risk to infrastructures. Until this moment, some studies for analysing slope movements have been carried out using the comparison of positions of well-defined points or comparing two surfaces obtained from two DSMs. In this paper we present a methodology for analysing landslides based on some linear elements located on the terrain. More specifically, we analyse some lines of road sections which are located on an unstable slope, checking the movements of the landslide and their effect on the infrastructure. The methodology includes the obtaining of high resolution orthoimages and DSMs which correspond to two or more epochs of the same landslide, the 3D digitizing of common linear elements, and the computing of the displacements of matched lines (from two epochs) using positional control methods based on lines. The proposed methodology has been tested using two DSMs and two orthoimages (corresponding to two epochs) obtained from two photogrammetric projects developed with an UAS. This real case was applied to an unstable slope with landslides which affected several sections of a road. The results have demonstrated the viability of the proposed methodology in analysing the behaviour of the landslide and more specifically, the effects on these infrastructures.

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Section: Figure 1 Proposed Methodologymentioning

confidence: 99%

Section: Figure 1 Proposed Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of Landslides Based on Displacements of Lines

Mozas‐Calvache¹,

Pérez-García²,

Castillo³

et al. 2016

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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“…This band contained the more probable location of the line. Since then, various models [27][28][29][30][31][32][33] and methods [34][35][36][37][38][39][40] have been proposed for describing and assessing the positional accuracy of lines. A more detailed description of these models and methods was outlined by Gil de la Vega et al [41].…”

Section: Introductionmentioning

confidence: 99%

“…However, the majority of these studies analyzed the positional displacements of a set of lines from a planimetric point of view. In this sense, Mozas and Ariza [40] adapted several methods to assess and control lines in 3D using a more accurate source of lines. Among others, they adapted to 3D the Hausdorff distance method (HDM) and the Vertex Influence Method (VIM3D).…”

Section: Introductionmentioning

confidence: 99%

Determination of 3D Displacements of Drainage Networks Extracted from Digital Elevation Models (DEMs) Using Linear-Based Methods

Mozas‐Calvache

Ureña-Cámara

López

2017

IJGI

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This study describes a new method developed to determine the 3D positional displacements of the drainage networks extracted from Digital Elevation Models (DEMs). The proposed method establishes several stages for data preparation. The displacements are derived by means of linestring-based assessment methods, which can be applied in 2D and 3D. Also, we propose the use of several tools (maps, aggregation of results, new indices, etc.) in order to obtain a wider assessment of positional accuracy, or a time change analysis. This approach supposes a novelty in drainage network studies both in the application of line-based methods and its expansion to 3D data. The method has been tested using a sample of channels extracted from DEMs of two different dates of a zone of about 600 square kilometers using as reference linestrings those extracted from another more recent DEM which had higher spatial accuracy and higher spatial resolution. The results have demonstrated the viability of the method proposed because of the obtaining of 3D displacement vectors, which showed the general and particular behavior of the channels selected.

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