Jose Luis Pérez

Universidad de Jaén | UJAEN · Departamento de Ingeniería Cartográfica, Geodésica y Fotogrametría

This study describes a methodology for obtaining a geometric documentation of a medium-sized archaeological area by applying various geomatic techniques. The procedure considers the obtainment of products at several scales, from the entire site to small artifacts, and at several dates, in order to model the evolution of the archaeological work. The...

Highlights: • A new methodology is presented to develop geometrical analysis of burial structures based on 3D models. • The methodology has been applied to three contiguous burial structures (hypogea), allowing the researchers to analyse some constructive aspects such as dimensions, proportions, orientations, flatness and inclinations. • Results...

From tomb to church. Archaeological and architectural analysis of the Old Kingdom funerary complex (QH34h) and its transformation into a Byzantine Christian church in the Necropolis of Qubbet el Hawa (Aswan, Egypt) De tumba a iglesia. Análisis arqueológico y arquitectónico del complejo funerario del Reino Antiguo (QH34h) y su transformación en igle...

The downward (relatively cool) air flow (DAF) in caves is a phenomenon described but little considered in papers if compared with the upward air flow. We found that DAFs are a widespread occurrence in crevice caves (from tectonic or gravitational origin) with multiple entrances at different altitudes, whenever daily and seasonal thermal contrasts a...

This study describes the methodology carried out and the main results achieved when using photogrammetry and Terrestrial Laser Scanning (TLS) to obtain 3D models of the evolution of archaeological works in Egyptian tombs. More concretely, the study was performed in the exterior zone of the QH34 set of tombs located in the necropolis of Qubbet el-Ha...

This paper deals with the use of aerial photogrammetry and LiDAR techniques to analyze landslide activity over a long time span—just over 32 years. The data correspond to several aerial surveys (1984, 1996, 2001, 2005, 2009, 2010, 2011, 2013 and 2016) covering an area of about 50 km2 along highway A-44, near Jaén (Southern Spain). An ad hoc combine...

Se presenta un conjunto de cinco proyectiles de artillería romana (pila catapultaria) localizados mediante microprospección geomagnética en el actual Cerro de la Muela (Mengíbar, Jaén). El análisis arqueológico multidisciplinar desarrollado en este emplazamiento ha permitido documentar un oppidum de casi 16 ha habitado entre los siglos VI y III a.n...

The Qubbet el-Hawa necropolis, located on the west bank of the Nile, was the burial site chosen by the elite of Elephantine, from the Old Kingdom to the Middle Kingdom, and became one of the most important provincial cemeteries in the country. The hill affects the course of the River Nile and determines the disposition of the hypogea distributed be...

Gully erosion is one of the main processes of soil degradation, reaching 50%–90% of total erosion in basins. As erosion processes are related to rainfall regime, the depletion and deposition rates can be increasing in a climate change scenario. This paper deals with the quantification of erosion processes in an active gully affecting olive groves o...

This paper describes the methodology employed to obtain 3D models of three funerary complexes (QH31, QH32 and QH33) of the Necropolis of Qubbet el Hawa (Aswan, Egypt) and the main results obtained. These rock-cut tombs are adjacent structures defined by complex geometries such as chambers, corridors and vertical shafts. The main goal of this study...

An approach based on images captured by means of an Unmanned Aerial System (UAS) and Structure from Motion – Multi Video Stereo (SfM-MVS) photogrammetry is presented for the study of the gully erosion in a catchment area of about 16 ha. The study area is located in the province of Jaén (SW Spain) where the main land use is the olive groves. Three U...

This study describes a new approach to Remotely Piloted Aerial Systems (RPAS) photogrammetric mission flight planning. In this context, we have identified different issues appearing in complex scenes or difficulties caused by the project requirements in order to establish those functions or tools useful for resolving them. This approach includes th...

Gully erosion is one of the main processes of soil degradation, representing 50%–90% of total erosion at basin scales. Thus, its precise characterization has received growing attention in recent years. Geomatics techniques, mainly photogrammetry and LiDAR, can support the quantitative analysis of gully development. This paper deals with the applica...

This paper presents the method applied and the results obtained in the photogrammetric study of the Qubbet el-Hawa Coptic Church. After several archaeological interventions, the ruins of this church were completely uncovered of sand. Therefore, a geometric documentation is justified in prevision of possible damages or deterioration that could affec...

This paper presents a methodology for measuring road surface deformation due to terrain instability processes. The methodology is based on ultra-high resolution images acquired from unmanned aerial vehicles (UAVs). Flights are georeferenced by means of Structure from Motion (SfM) techniques. Dense point clouds, obtained using the multiple-view ster...

This study describes a new procedure for acquiring images and developing photogrammetric studies of inaccessible spaces in archaeology. The approach is based on the acquisition of photographs using a system mounted on a mast, with a length of up to 4 m. The camera is handled using a remote control assisted with a real-time viewer. After the acquisi...

Three‐dimensional (3D) modelling of archaeological sites has recently undergone a great development due to the implementation of new acquisition devices and techniques and new processing algorithms. One of the most noteworthy of these is the use of unmanned aerial systems for lifting acquisition devices such as digital cameras to model sites based...

Caves are buried geological features of great scientific and engineering interest. Based on the well-known thermal inertia of cave settings with respect to the surface, we have tested the use of thermal infrared (TIR) cameras carried by unmanned aerial vehicles (UAVs) to identify and characterize shallow karstic conduits. A pilot area was selected...

RESUMEN En el presente trabajo se muestra el caso de la urbanización Los Cármenes del Mar (Almuñécar, Granada). Parte de esta urbanización, de unas 416 viviendas, se construyó sobre un deslizamiento preexistente. Numerosas viviendas han sido evacuadas recientemente y se ha declarado oficialmente el " estado de emergencia " en el complejo urbanístic...

This study describes a new methodology for monitoring landslide displacements using a set of linear elements included in the terrain. These linear elements are digitized using the products obtained from several photogrammetric flights implemented by means of unmanned aircraft systems in several dates. The control of the displacements between dates...

In this work a detailed analysis of the temporal evolution of the Almegíjar landslide is presented. It is a rock slide located in the Alpujarras region (Granada, Spain) that has developed over the last 30 years. Six datasets and photogrammetric flights corresponding to the years 1956, 1984, 1992, 2001, 2008, and 2010 were surveyed. The more recent...

Nowadays, obtaining large-scale topographic maps from unmanned aerial vehicle (UAV) photogrammetric projects has become an alternative to traditional surveys based on global positioning systems (GPSs) or total stations. This assumption is based on the reduction of costs, the application to reduced zones, the efficiency of the procedures, and the po...

This paper deals with the application of Unmanned Aerial Vehicles (UAV) techniques and high resolution photogrammetry to study the evolution of a landslide affecting olive groves. The last decade has seen an extensive use of UAV, a technology in clear progression in many environmental applications like landslide research. The methodology starts wit...

results obtained in using free software and fusion of data from laser scanner and photographs. In this sense, one of the problems that can occur when Heritage documentation is made, is the impossibility of move the object of study from other places with appropriates environment conditions to capture data. This problem is especially important in the...

The cultural heritage plays a very important role in the Smart management of an area, and geospatial technologies are a perfect tool for the heritage knowledge, management and analysis. Photogrammetry, UAV systems and geographic information systems, can help in cataloguing the cultural heritage of a city. The main turistic value for Alcalá la Real,...

Nowadays, data fusion is one of the trends in geomatics sciences, due to the necessity of merging data from different kind of sensors and periods of time. Also, to extrract the maximum information from data and useful multitemporal analysis, an exact geoconnection of all datasets in a common and stable reference system is essential. The results of...

Nowadays, data fusion is one of the trends in geomatics sciences, due to the necessity of merging data from different kind of sensors and periods of time. Also, to extrract the maximum information from data and useful multitemporal analysis, an exact geoconnection of all datasets in a common and stable reference system is essential. The results of...

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...

The province of Jaen (Southern Spain) has one of the largest concentrations of medieval fortresses of all Europe. Moreover ancient Iberian settlements located in oppida (fortified villages) and dated at VI-IV BC also are outstanding examples of historical heritage landmarks in the region. Most of these places are being restored or under documentati...

The province of Jaen (Southern Spain) has one of the largest concentrations of medieval fortresses of all Europe. Moreover ancient Iberian settlements located in oppida (fortified villages) and dated at VI-IV BC also are outstanding examples of historical heritage landmarks in the region. Most of these places are being restored or under documentati...

In the present work, the case of the Cármenes del Mar resort (Granada, Spain) is shown. It can be considered one of the most extreme examples on the Mediterranean coast of severe pathologies associated with urban development on coastal landslides. The resort, with 416 dwellings, was partially built on a deep-seated landslide which affects a soft fo...

This paper presents a methodology for slope instability monitoring using photogrammetric techniques with very high resolution images from an unmanned aerial vehicle (UAV). An unstable area located in La Guardia (Jaen, Southern Spain), where an active mud flow has been identified, was surveyed between 2012 and 2014 by means of four UAV flights. Thes...

Remote sensing techniques applied to multi-scale and multi-temporal geological process): The development of remote sensing techniques in the last years allowed to monitoring large portion of territory with relatively low cost. Many geological and environmental processes may be mapped, monitored and controlled by several type of remote sensing techn...

The anthropic role in the slope stability, the case of the A-348 Road, Granada, Spain): Landslides are geological processes in which the man action could greatly influence the slope equilibrium, in a positive or negative way. In the present work, changes in the safety factor (FS) of numerous road cuttings in the A-348 road, located in a mountainous...

Un movimiento de ladera, de carácter complejo, provocó el corte de la autovía A-92 el 18 de Marzo del 2001. La masa deslizada, con un volumen superior al millón de metros cúbicos, movilizó la parte de la ladera compren­dida entre la antigua carretera nacional CN-342 y la citada autovía en el punto kilométrico 272. La posterior restaura­ción de la l...

In this work, a simple methodology is presented for processing high-resolution topographical data over wide areas. It is based on digital elevation model of differences (DEMoD) among high-resolution digital models (HRDEM) produced from lightdetection and ranging (LiDAR) data. Because these qualitative approaches based on HRDEMs can be affected by e...

This article describes a new methodology for the planimetric control of contour lines. The method is based on the generation of buffers around the contour lines which define a 3D buffer around the maximum slope line. After that we analyze the quantity of points from a more accurate source which is inside this buffer. As a result, we obtain a distri...

In this work a methodology for preparing landslides susceptibility and hazard maps is presented, based in a bivariate analysis between past movements and determinant factors. The methodology for determining the susceptibility is an adaptation of the matrix method to a GIS, and it has been tested and validated in different zones and environments of...

This paper presents a method for studying recent landscape evolution due to mass movements. The method presented employs digital photogrammetric techniques, combined with global positioning system (GPS) measurements, to analyse landslide features depicted in aerial images taken by ad hoc and historical flights. The method was applied and validated...

In this paper, a Web-based system oriented toward students of surveying engineering and photogrammetry is presented. This application allows student self-evaluation of the calculations and problems involved in practical work. Students can evaluate their calculations before the final evaluation, minimizing the usual mistakes, primarily those of calc...

In this paper the evolution of the Almegíjar landslides in the Alpujarras (Granada) is presented from the analysis of five data sets and aerial photographs corresponding to the years 1956, 1992, 2001, 2008 and 2010. The more recent flight of 2010, combined of camera and LiDAR, was oriented by using the flight parameters and control points from whic...

Nowadays cartographic products are usually obtained from data sources which provide large amount of data. LiDAR acquisition system is a good example of the great quantity of data obtained, such as points with spatial coordinates in a determined reference system. The height of these points is usually related to a global ellipsoid (e.g. WGS84), but t...

In this work it is performed a comparison of two methods for obtaining digital elevation models (DEMs) and orthoimages of medium-sized archaeological sites (500-5000 m2). The photogrammetric methods analyzed consist in the use of a light aerial platform applying the normal case of photogrammetry (vertical photographs and regular blocks), and the se...

This paper describes the automation and optimization in control points measurement and elaboration of sketches in Close Range Photogrammetry. The system can be controlled by an operator alone and it integrates a robotized and reflectorless total station, two digital cameras, a laptop computer and the control software. The measured data with the sta...

At present, airborne laser scanner systems are one of the most frequent methods used to obtain digital terrain elevation models. While having the advantage of direct measurement on the object, the point cloud obtained has the need for classification of their points according to its belonging to the ground. This need for classification of raw data h...

At present, cultural heritage documentation projects use a variety of spatial data acquisition techniques such as conventional surveying, photogrammetry and terrestrial laser scanning. This paper deals with a full documentation project based on all those techniques in the Royal Chapel located in the Cathedral-Mosque of Cordoba in Spain, declared Wo...

After the heavy rains of 2009/10 winter, a road cut in the national highway A-44 and the upper slope became unstable; the mass invaded the way and caused important traffic interruptions by several months. The landslide was measured by means of terrestrial laser-scanner techniques and, because of the zone morphology, the used methodology involved sc...

FERNÁNDEZ LUQUE, I.; AGUILAR TORRES, F.J.; AGUILAR TORRES, M.A.; PÉREZ GARCÍA, J.L., and LÓPEZ ARENAS, A., 2012. A new, robust, and accurate method to extract tide-coordinated shorelines from coastal elevation models. The extraction of highly accurate shoreline data is fundamental to carrying out accurate and reliable studies to enhance our underst...

The extraction of highly accurate shoreline data is fundamental to carrying out accurate and reliable studies to enhance our understanding of coastal evolution and coastal vulnerability. In our case, shoreline extraction was needed to develop a method based on an extrapolation process because the most suitable height for datum-coordinated shoreline...

RESUMEN En este trabajo se ha evaluado la susceptibilidad frente a movimientos de ladera para el área ocupada por el Parque Nacional de Sierra Nevada. Para realizar el análisis de la susceptibilidad se han tenido en cuenta numerosos factores condicionantes, los cuales se han dividido entre variables obtenidas di-rectamente del Modelo Digital de Ele...

Mapping mission is to obtain an accurate representation of the form and the elements that exist in a particular area or region. Therefore, mapping projects often use a large number of points, which in recent years has increased with the use of LiDAR systems. The orthometric height determination can be done from a local geoid model determining the u...

Digital elevation models (DEMs) are widely used in GIS to predict the impact of coastal flooding and Sea Level Rise in coastal areas. Furthermore, DEM change detection within a certain time period may be also used to automatically quantify the coastal landscape changes. In this sense many researchers have adopted 3D surface matching techniques with...

Shoreline represents a coastal evolution indicator. Hence there is a necessity to develop new methods of shoreline mapping. Nowadays the most widely used method to compute the shoreline position is the so-called Cross Shore Profile method (CSP), which is based on computing a linear regression along different cross-shore profiles to interpolate the...

Resumen Este trabajo presenta las ideas y trabajos preliminares del proyecto Integración de Técnicas de Fotogrametría y Escáner Láser Terrestre para la Documentación Patrimonial (IFOTEL TIN2009-09939; Ministerio de Ciencia e Innovación, Plan Nacional I+D+i, 2008-2011), con el que se pretende buscar la mejora y optimización de la documentación del p...

In this paper, the applicability of the Newmark method at regional, sub-regional and site scales has been investigated in the Lorca Basin (Murcia). This basin is located in one of the most seismically active regions of Spain. The area is very interesting for studying earthquake-induced slope instabilities as there are well-known cases associated wi...

In recent times the methodologies and tools used for study and documentation of cultural heritage has undergone remarkable progress, we have a wide range of possibilities to tackle these tasks. However, some of these new possibilities, such as digital photogrammetric stations or laser scanner system facilitate and significantly improve the work and...

This paper describes the methodology for implementing geometric studies of little archaeological artefacts by mean of a 3D virtual model. This model is obtained through laser scanner 3D technology and allows us to obtain high accuracy measures in order to analyze the artefact. The method proposed gives the opportunity for performing these measures...

Recent advances in laser scanning techniques have allowed for a wide variety of applications and therefore the adaption of laser scanners (LS), both airborne laser scanners (ALS) and terrestrial laser scanners (TLS), is increasing in many science disciplines. Soil erosion is not an exception, where advances in soil erosion detection and measurement...

A hybrid theoretical–empirical model has been developed for modelling the error in LiDAR-derived digital elevation models (DEMs) of non-open terrain. The theoretical component seeks to model the propagation of the sample data error (SDE), i.e. the error from light detection and ranging (LiDAR) data capture of ground sampled points in open terrain,...

The shoreline is one of the most important features on the Earth's surface, representing a critical indicator of coastal evolution and vulnerability for any Coastal Geographic Information System. In this sense, a new methodological proposal for high accuracy shoreline mapping is outlined along the present work. Briefly, this methodology starts from...

Traditional methods using aerial photographs for shoreline measurement often involved non-stereo photography with no vertical information. However, digital elevation models (coastal elevation models or CEMs in our case) are widely used in GIS to predict the impact of coastal flooding and Sea Level Rise. Hence, we propose the CEM methodology to cope...

This paper is about the evaluation of a digital non-metric reflex camera (Canon D30) for low cost applications in archaeology, architecture and cultural heritage. At present digital cameras of different geometric qualities are being routinely used for this purposes. The Canon D30 digital camera is a professional camera with a CMOS sensor of 3.2 Mp....