Search results for "Fotogrametria aèria"
showing 3 items of 3 documents
Obtaining the three-dimensional structure of tree orchards from remote 2D terrestrial LIDAR scanning
2009
In recent years, LIDAR (light detection and ranging) sensors have been widely used to measure environmental parameters such as the structural characteristics of trees, crops and forests. Knowledge of the structural characteristics of plants has a high scientific value due to their influence in many biophysical processes including, photosynthesis, growth, CO2-sequestration and evapotranspiration, playing a key role in the exchange of matter and energy between plants and the atmosphere, and affecting terrestrial, above-ground, carbon storage. In this work, we report the use of a 2D LIDAR scanner in agriculture to obtain three-dimensional (3D) structural characteristics of plants. LIDAR allows…
Georreferenciación GPS/INS de imágenes aéreas adquiridas con escáneres rotacionales: ejemplo práctico y resultados
2003
Con la reciente introducción en el mercado de escáneres aerotransportados, la utilización de sistemas integrados GPS/INS es fundamental y redunda en la adquisición de imágenes y en la generación de productos digitales muy competitivos, por ejemplo ortoimágenes. En este artículo se han expuesto las claves de la georreferenciación de imágenes lineales obtenidas con escáneres rotacionales y orientadas a partir de procedimientos mixtos. Los resultados conseguidos muestran que los nuevos sensores y las nuevas tecnologías aerotransportadas existentes son hoy en día operativas para fines cartográficos.
Documenting, managing and visualizing a huge digital photogrammetric data set
2003
Photogrammetry is an efficient discipline for documenting graphically and semantically cultural heritage. For decades, photogrammetric documentation following the 3x3 rules has been well-proved and used all over the world. However, when the data set is huge, the control, assessment and manage (e.g. labelling and recovery) of pictures is a crucial point in undefined or poorly structured archives. Furthermore, the digital era makes management of hundreds of pictures complicated because, on the one hand,there are many and big images and they require too much computer space (memory), and, on the other hand,there is no sense to hard-copy them by printing. Thus, this paper shows a way of labellin…