Search results for " Triangulation"

Psychological Intervention for Increased Motivation Towards Physical Activity and Weight Loss

2020

Resumen Se presenta un estudio de caso con una joven de 22 años (estudiante y entrenadora de baloncesto) que quería motivarse para perder peso y desarrollar hábitos saludables (buena alimentación y ejercicio físico regular). Se utilizó el modelo “La Jirafa de Cantón” como base de la intervención que consta de cuatro partes bien diferenciadas que son: la “cabeza” o meta; el “cuello” o las expectativas x valor; el “cuerpo” o la autoestima, autoeficacia y autoconcepto; y las “patas” de la base que se refieren a las cuatro vías de obtención de información (experiencia directa, experiencia indirecta, persuasión verbal y síntomas psicofisiológicos). El análisis de datos tanto cuantitativos como c…

Remark on integrable Hamiltonian systems

1980

An extension ton degrees of freedom of the fact is established that forn=1 the time and the energy constant are canonically conjugate variables. This extension is useful in some cases to get action-angle variables from the general solution of a given integrable Hamiltonian system. As an example the Delaunay variables are proved to be canonical.

Ten Words About Morphogenetic Images

2018

This chapter describes how the repertoire of images derived from morphogenetic shaping processes is widely studied in every scientific and humanistic field. These are from the pioneering experiences of cinematic, programmed and generative arts of the 1960s and 1970s, the utopian digital space spells in the ‘90s, the morphogenetic architectural projects in the early 2000s, to the latest experiences. It is possible to look at these currents with a critical look detached from the time distance that has developed. Many denominations indicate processes and experiences in different fields but result from a common intellectual matrix. This is used to generate shapes, figures, spaces or images from…

Advanced SVG Rendering of Digital Images

2005

Radiometric and geometric evaluation of the capabilities of the new airborne digital photogrammetric sensors

2008

In this paper the theoretic and practical points of view about the applications of the modern digital airborne sensors in the photogrammetry and remote sensing fields are described. The first part of the paper describes the theoretic matter, the second one shows the first results regarding the carried out elaborations on an image of Palermo acquired by digital airborne sensor LH System ADS40. Besides the research has examined most of sides regarding the trilinear sensor and it has highlighted the capabilities and limitations respect to the traditional analogical system and the matricial CCD sensor.

SVG rendering for internet imaging

2006

The SVG (scalable vector graphics) standard allows representing complex graphical scenes by a collection of graphic vectorial-based primitives, offering several advantages with respect to classical raster images such as: scalability, resolution independence, etc. In this paper we present a full comparison between some advanced raster to SVG algorithms: SWaterG, SVGenie, SVGWave and some commercial tools. SWaterG works by a watershed decomposition coupled with some ad-hoc heuristics, SVGenie and SVGWave use a polygonalization based respectively on data dependent and wavelet triangulation. The results obtained by SWaterG, SVGenie and SVGWave are satisfactory both in terms of perceptual measur…

Mesh connectivity compression using convection reconstruction

2007

International audience; During a highly productive period running from 1995 to about 2002, the research in lossless compression of 3D meshes mainly consisted in a hard battle for the best bitrates. But for a few years, compression rates seem stabilized around 1.5 bit per vertex for the connectivity coding of usual meshes, and more and more work is dedicated to remeshing, lossy compression, or gigantic mesh compression, where memory and CPU optimizations are the new priority. However, the size of 3D models keeps growing, and many application fields keep requiring lossless compression. In this paper, we present a new contribution for single-rate lossless connectivity compression, which first …

Copy–Move Forgery Detection by Matching Triangles of Keypoints

2015

Copy-move forgery is one of the most common types of tampering for digital images. Detection methods generally use block-matching approaches, which first divide the image into overlapping blocks and then extract and compare features to find similar ones, or point-based approaches, in which relevant keypoints are extracted and matched to each other to find similar areas. In this paper, we present a very novel hybrid approach, which compares triangles rather than blocks, or single points. Interest points are extracted from the image, and objects are modeled as a set of connected triangles built onto these points. Triangles are matched according to their shapes (inner angles), their content (c…

GrailQuest and HERMES: hunting for gravitational wave electromagnetic counterparts and probing space-time quantum foam

2021

GrailQuest (Gamma-ray Astronomy International Laboratory for Quantum Exploration of Space-Time) is an ambitious astrophysical mission concept that uses a fleet of small satellites whose main objective is to search for a dispersion law for light propagation in vacuo. Within Quantum Gravity theories, different models for space-time quantization predict relative discrepancies of the speed of photons w.r.t. the speed of light that depend on the ratio of the photon energy to the Planck energy. This ratio is as small as 10-23 for photons in the γ- ray band (100 keV). Therefore, to detect this effect, light must propagate over enormous distances and the experiment must have extraordinary sensitivi…

Constructing a Pareto front approximation for decision making

2011

An approach to constructing a Pareto front approximation to computationally expensive multiobjective optimization problems is developed. The approximation is constructed as a sub-complex of a Delaunay triangulation of a finite set of Pareto optimal outcomes to the problem. The approach is based on the concept of inherent nondominance. Rules for checking the inherent nondominance of complexes are developed and applying the rules is demonstrated with examples. The quality of the approximation is quantified with error estimates. Due to its properties, the Pareto front approximation works as a surrogate to the original problem for decision making with interactive methods. Qc 20120127