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"The broad range of applications for automatic expression detection sparks the need for a robust and effective implementation. In this paper, an exposition of the existing methods most frequently used for this purpose is...

A considerable compression rate can only be achieved by means of algorithms with loss, which means that it is not possible to recover the exact original image. This loss of information may have a direct relation to the l...

In this paper, an SVD-based perceptual fidelity metric is reviewed and used in the context of objective quantification of image watermarking fidelity for two stateof- the-art Image Adaptive SVD-based Watermarking Schemes...

Economic inequality is a social phenomenon with several facets, all of which are signifificant when it comes to multidimensional measurement. When income is used as the fundamental variable of analysis to measure economi...

Water availability is one of the main limiting factors that control ecosystem functions and productivity in semiarid regions. Vegetation of these regions usually presents a patchy distribution where sparse plant cover is...

Current knowledge of the nervous system, particularly the brain, is the result of technological advances and the collective effort of many scientists. However, it was Santiago Ramón y Cajal (1852–1934) who played a cr...

La littérature depuis ses commencements jusquà nos jours sest mise fréquemment à regarder létranger, dont les représentations comptent, sans doute, parmi les plus anciennes de lHumanité, car les nombreuses bataill...

Complementary DNA (cDNA) microarrays are a powerful high throughput technology developed in the last decade allowing researchers to analyze the behaviour and interaction of thousands of genes simultaneously. The large a...

Se presenta el desarrollo de un algoritmo de procesamiento de imágenes para el soporte de detección de celo vacuno. El método de detección se basa en el análisis del deterioro de pintadas lumbares, mediante la segme...

The analysis and classification of seeds are essential activities contributing to the final added value in the crop production. Besides varietal identification and cereal grain grading, it is also of interest in the agri...

A apatia da análise dos ambientes urbanos é fruto da incompreensão da cidade como um conjunto onde a ação antrópica, nos tempos da globalização, se explicita de forma depredatória. O presente ensaio versa sobre ...

"Synthetic Aperture Radar (SAR) imaging is based on airborne or satellite active microwave sensors that can capture the earth surface by emitting a signal and receiving the backscattered signal that forms the resulting ...

" Common spatial patterns analysis and linear discriminant analysis are popular algorithms for spatial filtering and classifying in motor imagery. These algorithms are very sensitive to noise and artifacts which affect t...

"Common spatial patterns analysis (CSP) and linear discriminant analysis (LDA) are widely used techniques for spatial filtering and classifying in motor imagery (MI). However, CSP is very sensitive to noise and artifacts...

Synthetic Aperture Radar (SAR) images are corrupted by a signal-dependent non-additive noise called speckle. Many statistical models have been proposed to describe this noise, aiming at the development of specialized tec...

In this paper we improve the face detection and segmentation technique proposed in [1]. In order to obtain the shape of the face, we use a region based approach and find the face as a set of regions from a generic segmen...

Los dispositivos de escaneo tridimensional permiten obtener modelos de objetos utilizando distintas técnicas de captura. Esta tarea puede ser llevada a cabo por ejemplo mediante estereovisión, el cual es un método de ...

The purpose of Functional Magnetic Resonance Imaging (fMRI) is to map areas of increased neuronal activity of the human brain. fMRI has been applied to investigate a variety of neuronal processes from activities in the p...

La rama de la Informática conocida como procesamiento de imágenes digitales comprende diferentes temas de Investigación y Desarrollo, así como aplicaciones que involucran las distintas etapas que van desde la adquisi...

We present a new approach for iris recognition based on a random sampling strategy. Iris recognition is a method to identify individuals, based on the analysis of the eye iris. This technique has received a great deal of...

The upper watershed of the Sauce Grande River supplies water to the hydraulic complex of the dike named Las Piedras, being a precious environmental service for the city of Bahia Blanca. A System of Payment for Environmen...

La calidad del agua superficial está condicionada por un variado conjunto de procesos naturales y actividades humanas que interaccionan entre sí; por lo tanto, se verá afectada por los usos efectivos del territorio en...

Cell adhesion is a fundamental biological process underpinning various physiological and pathological phenomena, including tissue repair and cancer metastasis. While straightforward, traditional assays for assessing cell...

O turismo é uma atividade capaz de contribuir para a tomada de consciência do valor da natureza e, consequentemente, dar apoio público para a conservação da biodiversidade, possibilitando, desta forma a criação de...