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Estudio sobre el uso de medidas de complejidad para la estimación del porcentaje de clasificación correcta en imágenes hiperespectrales
(2009)
Este documento presenta métricas de complejidad de imagen aplicadas a imágenes hiperespectrales. Se realiza el estudio de la relación entre estas métricas y el porcentaje de clasificación correcta (PCC) para los clasificadores ...
Determining noise in hyperspectral imagery for the application of oversampling to supervised classification
(2005)
A hyperspectral sensor imager has many (~200) contiguous spectral bands. It is this number and bandwidth of spectral bands that defines the spectral resolution of a sensor. In general, having a greater number of spectral ...
Fast piecewise linear predictors for lossless compression of hyperspectral imagery
(2003)
Image compression of hyperspectral is necessary because of the large storage requirements. The main objective of this research is to develop and implement fast and good predictors, for use in lossless compression of ...
Reducción de ruido en señales de espectroscopia raman
(2008)
En este documento se desarrollan algoritmos de reducción de ruido para mejorar señales de espectroscopia Raman manteniendo la información de la señal. Dos tipos de ruido afectan las medidas, ruido impulsivo causado por ...
Implementation of a phased array antenna using digital beamforming
(2005)
This work presents the design of a transmitter/receiver Digital Beamformer (DBF) based on the mathematical model of a far-field plane wave incident on a sensor array. Simulations of a DBF transmitter and receiver are ...
The development of ground truth data and accuracy assessment of hyperspectral image classification and spectral unmixing
(2007)
This work includes both theoretical and practical aspects of hyperspectral image classification and unmixing assessment. The theoretical aspect includes a study of end-to-end performance of hyperspectral classification and ...
Adaptive dithering of one dimensional signals
(2007)
This research work presents new techniques on the dithering of one dimensional signals. The first part of this work was to determine whether dither is needed when reducing the bit depth. This was done with time series ...
Lossless conversion between sigma-delta and pcm converters for digital audio applications, with human audible range analysis
(2004)
Pulse Code Modulation (PCM) has been the dominant format for signal representation since the early days of digital audio. This has come about because the compact disc (CD) uses PCM to encode audio. Recently, two high-resolution ...
Analysis of spectral variability in hyperspectral imagery with application to biodiversity estimation
(2013)
This work presents a newly developed destriping algorithm for Hyperion hyperspectral imagery as well as methods to detect spectral homogeneity within hyperspectral images. Hyperion has been in operation for over a decade ...
Algoritmos de Dithering con tiempo de procesamiento reducido
(2016)
En esta investigación se trabajó con el algoritmo Pendiente Máxima (SD o Steepest Descent, por sus siglas en inglés) para hallar una señal de dither (señal aleatoria) que hace que el ruido de cuantización (diferencia entre ...