Listar INIT_Articles por fecha de publicación
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Single-pixel polarimetric imaging spectrometer by compressive sensing
Springer (2013-12)We present an optical system that performs polarimetric spectral imaging with a detector with no spatial resolution. This fact is possible by applying the theory of compressive sampling to the data acquired by a sensor ... -
Automatic terrain generation with a sketching tool
Springer (2014)Nowadays, applications such as scientific simulations, virtual reality or computer games are increasing the detail of their environments with the aim of offering more realism. Terrain is a very important element in these ... -
The Chern–Osserman inequality for minimal surfaces in a Cartan–Hadamard manifold with strictly negative sectional curvatures
Springer Netherlands (2014)We state and prove a Chern–Osserman-type inequality in terms of the volume growth for minimal surfaces S which have finite total extrinsic curvature and are properly immersed in a Cartan–Hadamard manifold N with sectional ...
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Resolution analysis in computational imaging with patterned illumination and bucket detection
Optical Society of America (2014)In computational imaging by pattern projection, a sequence of microstructured light patterns codified onto a programmable spatial light modulator is used to sample an object. The patterns are used as generalized measurement ...
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A bias correction function for classification performance assessment in two-class imbalanced problems
Elsevier (2014)This paper introduces a framework that allows to mitigate the impact of class imbalance on most scalar performance measures when used to evaluate the behavior of classifiers. Formally, a correction function is defined with ...
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Improving Hyperspectral Pixel Classification With Unsupervised Training Data Selection
Institute of Electrical and Electronics Engineers (IEEE) (2014)An unsupervised method for selecting training data is suggested here. The method is tested by applying it to hyperspectral land-use classification. The data set is reduced using an unsupervised band selection method and ...
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On hidden Markov models and cyclic strings for shape recognition
Elsevier (2014)Shape descriptions and the corresponding matching techniques must be robust to noise and invariant to transformations for their use in recognition tasks. Most transformations are relatively easy to handle when contours ...
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Mean curvature and compactification of surfaces in a negatively curved Cartan–Hadamard manifold
International Press (2014)We state and prove a Chern–Osserman-type inequality in terms of the volume growth for complete surfaces with controlled mean curvature properly immersed in a Cartan–Hadamard manifold N with sectional curvatures bounded ...
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Assessment of OGC Web Processing Services for REST principles
Inderscience (2014)Recent distributed computing trends advocate the use of REpresentational State Transfer (REST) to alleviate the inherent complexity of the web services standards in building service-oriented web applications. In this paper ...
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Three-dimensional trees for virtual globes
Taylor & Francis (2014)One of the problems in virtual globes technologies is the real-time representation of vegetal species. In forest or garden representations, the low detailed plants produce a lack of realism. Efficient techniques are required ...
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Encoding complex fields by using a phase-only optical element
Optical Society of America (2014)We show that the amplitude and phase information from a two-dimensional complex field can be synthesized from a phase-only optical element with micrometric resolution. The principle of the method is based on the combination ...
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Controlled Multibeam Supercontinuum Generation With a Spatial Light Modulator
IEEE (2014)We report on deterministic femtosecond multifilamentation in fused silica by encoding a diffractive microlens array into a spatial light modulator. The efficiency and focal length of each microlens are modified through ...
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Image transmission through dynamic scattering media by single-pixel photodetection
Optical Society of America (2014)Smart control of light propagation through highly scattering media is a much desired goal with major technological implications. Since interaction of light with highly scattering media results in partial or complete depletion ...
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Mobile Access to Sensor Networks by Using GIS Standards and RESTful Services
Institute of Electrical and Electronics Engineers (IEEE) (2014)There is an increasing deployment of sensor networks that measure the physical state of the environment. These networks provide large volumes of data in many different formats, resolutions, and scales. There are different ...
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Efficient visualization of 3D models on hardware-limited portable devices
Springer (2014)Managing the geometry of a 3D scene efficiently is a key aspect of an interactive 3D application. This aspect is more important if we target at portable devices, which have limited hardware capabilities. Developing new ...
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Human gesture recognition using three-dimensional integral imaging
Optical Society of America (2014)Three-dimensional (3D) integral imaging allows one to reconstruct a 3D scene, including range information, and provides sectional refocused imaging of 3D objects at different ranges. This paper explores the potential use ...
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Modelling contextual constraints in probabilistic relaxation for multi-class semi-supervised learning
Elsevier (2014)This paper proposes a semi-supervised approach based on probabilistic relaxation theory. The algorithm performs a consistent multi-class assignment of labels according to the contextual information constraints. We start ...
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Exploring some practical issues of SVM+: Is really privileged information that helps?
Elsevier (2014)Learning using privileged information (LUPI) is a machine learning paradigm which aims at improving classification by taking advantage of information that is only available at training time —not at test time. SVM+ is an ...
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On Hyperspectral Remote Sensing of Leaf Biophysical Constituents: Decoupling Vegetation Structure and Leaf Optics Using CHRIS–PROBA Data Over Crops in Barrax
IEEE (2014)Scattering from a leaf responds differently at different wavelengths to changes in leaf properties such as pigment concentrations, chemical constituents, internal structure, and leaf-surface properties. Radiation scattered ...
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Detección de ruido en aprendizaje semisupervisado con el uso de flujos de datos
Universidad de Antioquia (2014)A menudo, es necesario construir conjuntos de entrenamiento. Si disponemos solamente de un número reducido de objetos etiquetados y de un conjunto numeroso de objetos no etiquetados, podemos construir el conjunto ...
