Arte y Literatura

Biblioteca universal sobre Arte y Literatura Contemporánea

Pattern Recognition Methods for Crop Classification from Hyperspectral Remote Sensing Images

Sinopsis del Libro

Libro Pattern Recognition Methods for Crop Classification from Hyperspectral Remote Sensing Images

(Complete work in Spanish) Remote sensing aerial spectral imaging was one of the first application areas where spectral imaging was used in order to identify and monitor the natural resources and covers on earth surface. Aerial spectral imaging is being developed with the aim of monitoring natural resources like coastal areas, forestry and extensive crops. The information contained in hyperspectral images allows the reconstruction of the energy curve radiated by the terrestrial surface throughout the electromagnetic spectrum. Hence, the characterization, identification and classification of the observed material from their spectral curve is an interesting possibility. Pattern recognition methods have proven to be effective techniques in this kind of applications. In fact, classification of surface features in satellite imagery is one of the most important applications of remote sensing. It is often difficult and time-consuming to develop classifiers by hand, so many researchers have turned to techniques from the fields of statistics and machine learning to automatically generate classifiers. Nevertheless, the main problem with supervised methods is that the learning process heavily depends on the quality of the training data set and the input space dimensionality. Certainly, these are main issues to be addressed, given the high cost of true sample labeling, the high number of spectral bands, and the high variability of the earth surface and the illumination conditions. In practice, a preprocessing stage (feature selection/extraction) is time-consuming, scenario-dependent and needs a priori knowledge. Thus, more efforts must be done to improve classification methods, in terms of accuracy, robustness, reliability, real-time performance and interpretability. This work is a contribution to the Digital Airborne Imaging Spectrometer Experiment (DAISEX) project, funded by the European Space Agency (ESA) within the framework of its Earth Observation Preparatory Program during 1998, 1999, and 2000. During the DAISEX campaign, hyperspectral images were acquired with the HyMap spectrometer (128-band scanner with a discontinuous spectral range: 0.4 μm - 2.5 μm). In this context, we have carried out an extensive comparison of state-of-the-art methods to develop crop cover classifiers and to obtain a thematic map of the crops on the scene. On one hand, in order to circumvent problems when dealing with a high dimensional input space (induced by the high resolution of the HyMap spectrometer, 128 bands), we have studied a preprocessing stage of feature selection/extraction. This first stage analyses the most critical spectral bands for the present subject. On the other hand, we have developed many methods, both supervised and unsupervised, for crop cover classification, image clustering, interpretation and robustness tests. All these approaches have been included in a general learning scheme where we propose a combined strategy of supervised and unsupervised learning methods that avoids these drawbacks and automates the classification process. In this study, we review the work carried out in that sense and how it could be useful in further applications.

Información del Libro

Número de páginas 185

Autor:

  • Luis Gomez Chova

Categoría:

Formatos Disponibles:

PDF, EPUB, MOBI

¿Cómo obtener el libro?

A continuación, te presentamos diversas opciones para adquirir el libro:

Puntuación

Popular

3.8

18 Reseñas Totales


Más libros de la categoría Ciencia

Química básica

Libro Química básica

El texto, básico pero con rigor, ofrece una exposición de los principios de la Química, accesible incluso para estudiantes sin apenas conocimientos de esta materia. A su parte teórica se une una completa y amplia colección de ejercicios, algunos explicados detalladamente y resueltos; y, otros, propuestos e indicada su resolución, Los autores de este libro son profesores de la UNED y han elaborado diversos materiales didácticos adaptados a la enseñanza a distancia de materias regladas y no regladas.

Una (Muy) Breve Historia de la Vida En La Tierra

Libro Una (Muy) Breve Historia de la Vida En La Tierra

In the beginning, Earth was an inhospitably alien place―in constant chemical flux, covered with churning seas, crafting its landscape through incessant volcanic eruptions. Amid all this tumult and disaster, life began. The earliest living things were no more than membranes stretched across microscopic gaps in rocks, where boiling hot jets of mineral-rich water gushed out from cracks in the ocean floor. Although these membranes were leaky, the environment within them became different from the raging maelstrom beyond. These havens of order slowly refined the generation of energy, using it to...

Ciencia y Sociedad: pinceladas

Libro Ciencia y Sociedad: pinceladas

En este libro se recogen las contribuciones de una constelación de autores que, desde su práctica científica cotidiana, han dedicado importantes esfuerzos para señalar y advertir, tanto a sus colegas de profesión como al público en general, sobre la naturaleza social de la ciencia y la responsabilidad social del científico. El quehacer científico no es ideologicamente neutro, nunca lo ha sido y nunca lo será. En los conceptos científicos que se desarrollan y construyen históricamente está embutida una visión social particular y una ideología llena de preconceptos. El científico ...

El arco iris de Feynman

Libro El arco iris de Feynman

Richard Feynman (1918-1988) fue uno de los mayores físicos del siglo XX. Fue célebre por sus contribuciones a la electrodinámica cuántica, que le valieron el premio Nobel en 1965. En este libro, Leonard Mlodinow describe su relación con Feynman durante su primer año en el California Institute of Technology, el lugar de trabajo de aquel brillante físico. Mlodinow encontró en Feynman algo más que un colega experimentado: descubrió a un hombre sin prejuicios que atesoraba un maravilloso universo de experiencias e ideas, muchas de las cuales compartió con él precisamente durante los...

Nuevos Libros en 2025



Últimas Búsquedas


Categorías Destacadas