
Dionisio Rodríguez-EsparragónUniversity of Las Palmas de Gran Canaria | ULPGC · Instituto Universitario de Oceanografía y Cambio Global (Iocag)
Dionisio Rodríguez-Esparragón
MS
About
43
Publications
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Introduction
Dionisio Rodríguez-Esparragón currently works at the Instituto Universitario de Oceanografía y Cambio Global (IOCAG), Universidad de Las Palmas de Gran Canaria. Dionisio does research in Telecommunications Engineering, specifically Remote Sensing. Their current project is 'ARTEMISAT2'.
Publications
Publications (43)
Forests are crucial for biodiversity, climate regulation, and hydrological cycles, requiring sustainable management due to threats like deforestation and climate change. Traditional forest monitoring methods are labor-intensive and limited, whereas UAV LiDAR offers detailed three-dimensional data on forest structure and extensive coverage. This stu...
The global increase in wildfires due to climate change highlights the need for accurate wildfire mapping. This study performs a proof of concept on the usefulness of SuperDove imagery for wildfire mapping. To address this topic, we present an automatic methodology that combines the use of various vegetation indices with clustering algorithms (bisec...
Monitoring dense forest ecosystems, such as the laurel forest in Garajonay National Park, is vital for biodiversity conservation, carbon storage, and ecological balance. This study employs satellite remote sensing technologies to introduce a novel methodology, based on vegetation indices, aiming to assess and protect the health of the forest. Utili...
Understanding the causes of global sea level rise is considered as an important goal of climate research on a regional scale, especially around islands, owing to their vulnerability to this phenomenon. In the case of the Canary Islands, these alterations entail an increase in territorial risks. The Canary Islands span the transitional zone linking...
Coastal areas are key to sustaining biodiversity, but their complexity and variability makes their analysis challenging. On the other hand, mountain ecosystems include a large percentage of the global biodiversity and their monitoring is essential, as they are especially vulnerable to climate change. In this context, remote sensing offers a cost-ef...
Climate evolves following natural variability, and knowledge of these trends is of paramount importance to understand future scenarios in the frame of global change. Obtaining local data is also of importance since climatic anomalies depend on the geographical area. In this sense, the Canary Current is located in one of the major eastern boundary c...
Abstract. Climate evolves following natural variability and knowledge of these trends is of paramount importance to understand future scenarios in the frame of global change. Obtaining local data is also of importance since climatic anomalies depend on the geographical area. In this sense, the Canary Current is located in one of the major eastern b...
Las tecnologías de la información y comunicaciones (TIC) forman parte de nuestras vidas en todos los ámbitos (personales, sociales, profesionales, etc.). Está demostrado que el uso de las TIC favorece la creatividad, el trabajo en grupo y demás habilidades cada vez más valoradas en el mercado laboral. En este contexto, hoy en día existen multitud d...
Accurate and up-to-date information on the spatial and geographical characteristics of agricultural areas is an indispensable value for the various activities related to agriculture and research. Most agricultural studies and policies are carried out at the field level, for which precise boundaries are required. Today, high-resolution remote sensin...
The outlining of agricultural land is an important task for obtaining primary information used to create agricultural policies, estimate subsidies and agricultural insurance, and update agricultural geographical databases, among others. Most of the automatic and semi-automatic methods used for outlining agricultural plots using remotely sensed imag...
Image fusion (pan-sharpening) plays an important role in remote sensing applications. Mainly, this process allows to obtain images of high spatial and spectral resolution. However, pan-sharpened images usually present spectral and spatial distortion when comparing with the source images. Because of this, the evaluation of the spectral quality of pa...
Remote multispectral data can provide valuable information for monitoring coastal water ecosystems. Specifically, high-resolution satellite-based imaging systems, as WorldView-2 (WV-2), can generate information at spatial scales needed to implement conservation actions for protected littoral zones. However, coastal water-leaving radiance arriving a...
The Fractal Dimension (FD) of an image defines the roughness using a real number which is highly associated with the human perception of surface roughness. It has been applied successfully for many computer vision applications such as texture analysis, segmentation and classification. Several techniques can be found in literature to estimate FD. On...
The objective of this work was to analyze the evolution of the vegetation covers of Teide National Park through the use of remote sensing data. The analysis of changes has been carried out on two scales: at medium resolution using Landsat data and at very high resolution, for specific zones, by means of the combination of aerial orthophotos and the...
Due to the massive insertion of embedded cameras in a wide variety of devices and the generalized use of LED lamps, Optical Camera Communication (OCC) has been proposed as a practical solution for future Internet of Things (IoT) and smart cities applications. Influence of mobility, weather conditions, solar radiation interference, and external ligh...
Satellite sensors usually provide two types of data: panchromatic and multispectral images which are characterized by their high spatial resolution and high spectral resolution respectively. In this context, the fusion techniques or pansharpening consist of merging these different aspects to obtain a fused (or pan-sharpened) image with high spatial...
Ecosystems provide a wide variety of useful resources that enhance human welfare, but these resources are declining due to climate change and anthropogenic pressure. In this work, three vulnerable ecosystems, including shrublands, coastal areas with dunes systems and areas of shallow water, are studied. As far as these resources’ reduction is conce...
Resumen: En este trabajo se describe una metodología para la evaluación de la calidad espacial de imágenes fusionadas de teledetección. A pesar de que existen numerosos indicadores de ca lidad publicados en la literatura científica, no existe un consenso sobre su rendimiento. En general utilizan el píxel como elemento de referen cia para el cálcu l...
Resumen: La fusión de imágenes juega un papel importante en las aplicaciones de teledetección en las que se necesita un análisis visual. Debido a esto, la evaluación de la calidad espectral de las imágenes fusionadas es un tema fundamental para optimizar y comparar el resultado de distintos algoritmos. El objetivo de este trabajo es explorar el uso...
Resumen: La delimitación de parcelas agrícolas a gran escala juega un papel primordial en los estudios relacionados con el manejo y la gestión de las explotaciones agrícolas. Por ello, es necesario el diseño de métodos computacionales que realicen esta labor de forma automática, rápida y precisa. El objetivo de este trabajo es proporcionar un marco...
Hearing impairment may constitute a barrier for accessing to information and communication in public places. Since the oral communication forms the basis of the learning process, this problem becomes of particular relevance at schools and universities. To cope with this situation is not enough to provide a textual translation for people with hearin...
A correct assessment of pan-sharpened remote sensing imagery (fusion of panchromatic and multispectral images) enables the improvement and ranking of pan sharpening algorithms. For this purpose, numerous quality indicators have been published in the literature; however, there is no consensus on their performance. In general, the pixel is used as a...
The identification of vegetation using remote sensing imagery is an important area of work with numerous applications such as the analysis of deforestation and crop monitoring. This work focuses on locating populations of an endemic shrub of the Canary Islands that grows in Teide National Park: the Teide broom. The objective is to determine automat...
Resumen. Las personas que padecen discapacidad auditiva encuentran dificultades para el acceso a la información y la comunicación en los lugares públicos. De acuerdo con esta realidad se plantea la posibilidad de disponer de una herramienta alternativa de comunicación basado en la lengua de signos española (LSE), que contribuya a superar la barrera...
People with hearing disability find it difficult to access to information and communication in public places. According to this fact, it is considered the possibility to design a communication system based on the Spanish Sign Language (SSL), which helps to overcome this barrier in public environments of wide concurrence, where much of the informati...
The evaluation of the spatial quality is one of the factors that determine the performance of pansharpening algorithms for remote sensing images. However, the number of studies that focus on the functioning of these measures is not extensive. This paper addresses the evaluation of the performance of spatial assessments of pansharpened images. For t...
Image fusion is the process of combining information from two or more
images into a single composite image that is more informative for visual
perception or additional processing. Pan-sharpening algorithms work
either in the spatial or in the transform domain and the most popular
and effective methods include arithmetic combinations (Brovey
transfo...
Nowadays, high spatial resolution remote sensing systems collect simultaneously a low resolution multispectral image plus a high resolution panchromatic image. The objective of pixel level fusion methods is to combine this information in order to obtain a new multispectral image that exhibits the spectral characteristics of the multispectral image...
The problem of quality video measurement can be faced from different approximations, starting from full- reference (FR) and no-reference (NR) according to the availability of the original signal. We have developed a Matlab code to implement a user interface with three different sets of parameters of video quality. These sets of parameters are class...
A 68-year-old man with peripheral vascular disease and associated risk factors, was diagnosed by CT-scan and aortography with an atherosclerotic descending thoracic aortic aneurysm. The patient was treated by successful endovascular grafting of the aneurysm using a midsternotomy incision and the insertion of a thoracic stent-graft through a T-Dacro...
Today's European society is developing the so called Higher Education European Space. In this process Information and Communication Technology (ICT's) plays an important role. These technologies are increasingly present in our daily world. They are orientated to increase the human being capacity and they are beneficial for all. Nevertheless, there...