Imágenes Hiperespectrales (HSI): La nueva generación de los sensores remotos
DOI:
https://doi.org/10.65966/ag.n51.87Palabras clave:
Imagen Hiperespectral, firma espectral pura (endmember), cubo hiperespectral, biblioteca espectral (espectroteca), procesamiento digital de HSIResumen
En este trabajo se muestran las características específicas de las imágenes hiperespectrales (HSI, HyperSpectrallmagin), las que están compuestas por más de cien bandas espectrales y ancho de banda relativamente estrechas (5-10 nm). Se explica que los datos hiperespectrales pueden ser visualizados como un cubo tridimensional, con dos dimensiones representadas por las coordenadas espaciales (x, y) y la tercera representada por las bandas espectrales (1), ubicadas en el eje z. Se desarrollan los temas de firma espectral pura (endmembers), biblioteca espectral, programas con sensores hiperespectrales y procesamiento digital de datos hiperespectrales (calibración de datos de reflectancia, reducción de la dimensionalidad de la imagen y clasificación). Se concluye que las HSI son una fuente relativamente nueva de datos para que los objetos y materiales (suelos, vegetación, minerales, etc.) puedan ser detectados, identificados, discriminados y cuantificados con mayor precisión.
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