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A review on edge detection based on filtering and differentiation
Armando J. Pinho; Luís B. AlmeidaIn this paper we address the issue of edge detection in digital images using linear filtering and differentiation. Our main objective was to join, and in some sense unify, a significant part of the techniques that fall into this paradigm.First, we focus on the question of two-dimensional differentiation and the problems associated with its application in the discrete spatial domain. Afterwards, we review some o...
Color-spaces and color segmentation for real-time object recognition in robotic...
Pedro M. R. Caleiro; António J. R. Neves; Armando J. PinhoObject recognition plays an important role in a vast diversity of robotic applications. This paper1 addresses the vantages and disadvantages of using some known color spaces (digital color representations) and segmentation methods for the purpose of accurate detection of color-coded objects, which are objects that are represented by a given color. The robots are previously programmed to associate each color or ...
NSL: uma linguagem para o desenvolvimento e simulação de redes neuronais
Armando J. PinhoIn this paper we describe the simulation environment for artificial neural networks that we have developed,and also have used, with the aim of obtaining experimental results involving this computational paradigm. This environment is based on the NSL (Neuro-simulalion lanplage), which is an interpreted language for the development and simulation of neural networks. ; Neste artigo descrevemos o ambiente de simul...
A Simulator Function Library for the SWIFT LAN Manager Prototype
Armando J. Pinho; Fernando M. S. RamosThis paper gives a description of the Simulator part of the SWIFT I,AN Manager prototype, developed at INESC, as a contribution to the EURET/SWIFT Project. The editor to01 used to manipulate simulator event files and the encoding used to represent actions are also described. ; Este artigo descreve parte do trabalho desenvolvido no INESC respeitante ao protótipo de um LAN Ma...
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