Search results for "ITN"

Three-dimensional rigid motion estimation using genetic algorithms from an image sequence in an active stereo vision system

2004

This paper proposes a method for estimating the three-dimensional (3D) rigid motion parameters from an image sequence of a moving object. The 3D surface measurement is achieved using an active stereovision system composed of a camera and a light projector, which illuminates the objects to be analyzed by a pyramid-shaped laser beam. By associating the laser rays with the spots in the two-dimensional image, the 3D points corresponding to these spots are reconstructed. Each image of the sequence provides a set of 3D points, which is modeled by a B-spline surface. Therefore, estimating the 3D motion between two images of the sequence boils down to matching two B-spline surfaces. We consider the…

A genetic algorithm for image segmentation

2002

The paper describes a new algorithm for image segmentation. It is based on a genetic approach that allow us to consider the segmentation problem as a global optimization problem (GOP). For this purpose, a fitness function, based on the similarity between images, has been defined. The similarity is a function of both the intensity and the spatial position of pixels. Preliminary results, obtained using real images, show a good performance of the segmentation algorithm.

Research of a Cellular Automaton Simulating Logic Gates by Evolutionary Algorithms

2003

This paper presents a method of using genetic programming to seek new cellular automata that perform computational tasks. Two genetic algorithms are used : the first one discovers a rule supporting gliders and the second one modifies this rule in such a way that some components appear allowing it to simulate logic gates. The results show that the genetic programming is a promising tool for the search of cellular automata with specific behaviors, and thus can prove to be decisive for discovering new automata supporting universal computation.

Predicting Heuristic Search Performance with PageRank Centrality in Local Optima Networks

2015

Previous studies have used statistical analysis of fitness landscapes such as ruggedness and deceptiveness in order to predict the expected quality of heuristic search methods. Novel approaches for predicting the performance of heuristic search are based on the analysis of local optima networks (LONs). A LON is a compressed stochastic model of a fitness landscape's basin transitions. Recent literature has suggested using various LON network measurements as predictors for local search performance.In this study, we suggest PageRank centrality as a new measure for predicting the performance of heuristic search methods using local search. PageRank centrality is a variant of Eigenvector centrali…

EFFECTS OF THREE DISTINCT PROTOCOLS OF FITNESS TRAINING ON BODY COMPOSITION STRENGTH AND BLOOD LACTATE

2008

WHAT IS FITNESS

2008

Principi di Metodologia del Fitness

2013

Effects of three distinct protocols of fitness training on body composition, strength and blood lactate

2010

AIM: Circuit training is a very popular methodology in fitness program because it allows to join together cardiovascular and strength training. The purpose of this study was to determine the physiological effects of circuit training performed at different intensities on body composition, strength and blood lactate in middle-aged subjects who had recently undergone only minimum physical training. METHODS: Forty participants (aged 50-65) were assigned to a control group (CG) or to one of the three exercise treatment groups: Endurance Group (EG), Circuit-Low Intensity Group (CLG), Circuit-High Intensity Group (CHG). The three groups exercised three times per week, 50 min per session for 12 wk …

Il fitness in gravidanza

2013

MECCANISMI FISIOLOGICI E STRUMENTALI DI PROTEZIONE DEL RACHIDE DURANTE LA PRATICA DEL FITNESS

2010

La protezione del rachide durante l’esecuzione di esercizi con sovraccarichi nella pratica del Fitness, al di là di ovvie e banali raccomandazioni, sull’entità del carico e sul mantenimento delle curve fisiologiche, spesso non viene adeguatamente sottolineata. Ancor meno vengono evidenziate le implicazioni della respirazione e del meccanismo della cosìdetta IAP (Intra Abdominal Pressure) sulla protezione del rachide sotto carico e durante esercizio. In questa review vengono analizzati gli studi, compresi quelli basilari e pioneristici di Nachemson, sui meccanismi fisiologici di protezione del rachide da sollecitazioni compressive durante l’esecuzione di esercizi; viene inoltre analizzata l’…