author = "Cremades, Javier"

Encontrado 50 documentos, página mostrada 4 de 5

Evaluation of automatic building detection approaches combining high resolution images and LiDAR data

Description: In this paper, two main approaches for automatic building detection and localization using high spatial resolution imagery and LiDAR data are compared and evaluated: thresholding-based and object-based classification. The thresholding-based approach is founded on the establishment of two threshold v...
Language(s): Inglés

Analysis of the factors affecting LiDAR DTM accuracy

Description: [EN] The creation of a quality Digital Terrain Model (DTM) is essential for representing and analyzing the Earth in a digital form. The continuous improvements in the acquisition and the potential of airborne Light Detection and Ranging (LiDAR) data are increasing the range of applications of this t...
Language(s): Español

Residual biomass calculation from individual tree architecture using terrestrial laser scanner and ground-level measurements

Description: Large quantity of residual biomass with possible energy and industrial end can be obtained from management operations of urban forests. The profitability of exploiting this resource is conditioned by the amount of existing biomass within urban community ecosystems. Prior research pointed out that re...
Language(s): Inglés

Calculation of biomass volume of citrus trees from an adapted dendrometry

Description: A methodology and computational algorithms, to calculate volumes and the total biomass contained in citrus trees from an adapted dendrometry were developed. The methodology could be used as a tool to manage resources from the orchards, establishing adequate predictive models for assessing parameters...
Language(s): Inglés

Study of Shrub Cover and Height Using LIDAR Data in a Mediterranean Area

Description: [EN] In this work we studied the height and coverage of shrub vegetation using light detection and ranging (LIDAR) data. The maximum dominant heights of vegetation were measured in the field in 83 stands of a 0.5-m radius, and the data were compared with figures for heights obtained from LIDAR data ...
Language(s): Inglés

Estimating residual biomass of olive tree crops using terrestrial laser scanning

Description: [EN] Agricultural residues have gained increasing interest as a source of renewable energy. The development of methods and techniques that allow to inventory residual biomass needs to be explored further. In this study, the residual biomass of olive trees was estimated based on parameters derived fr...
Language(s): Inglés

Analyzing the role of pulse density and voxelization parameters on full-waveform LiDAR-derived metrics

Description: [EN] LiDAR full-waveform (LFW) pulse density is not homogeneous along study areas due to overlap between contiguous flight stripes and, to a lesser extent, variations in height, velocity and altitude of the platform. As a result, LFW-derived metrics extracted at the same spot but at different pulse ...
Language(s): Inglés

Panorámica actual de las especies no indígenas marinas en el mar Cantábrico y Atlántico adyacente (NO-N de la península Ibérica): primera aproximación a la Directiva Marco de Estrategias Marinas en la demarcación noroeste

Description: Simposio Ibérico de Estudios de Biología Marina (18º. 2014. Gijón (España)) , La introducción de especies invasoras no indígenas es un problema cada vez más común a escala mundial, siendo considerado una de mayores amenazas para la conservación de la biodiversidad de todo el planeta. Estas invasiones b...
Language(s): Español

Estimation of wood volume and height of olive tree plantations using airborne discrete-return LiDAR data

Description: The aim of this study is to analyze methodologies based on airborne LiDAR (light detection and ranging) technology of low pulse density points (0.5m(-2)) for height and volume quantification of olive trees in Viver (Spain). A total of 29 circular plots, each with a radius of 20m, were sampled and th...
Language(s): Inglés

Estimation of chlorophyll «A» on the Mediterranean coast using a QuickBird image

Description: Remote sensing has proved a useful tool for monitoring and assessing water quality. However, little research has been conducted using satellite images with high spatial resolution to analyze coastal areas with high variability near shore. The objective of this research was to develop a model for est...
Language(s): Inglés

Encontrado 50 documentos, página mostrada 4 de 5

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