Geometric Transformations
Mostrando 25-29 de 29 artigos, teses e dissertações.
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25. Sobre simetrias e ornamentos
This objective of this work is to study symmetries and the groups of symmetries of ornaments. Firstly, the isometries of the plane (translation, rotation, reflection and glide reflection), the cyclical and dihedral groups and the translation s group are studied. After, the classification of the discrete symmetry groups of the plane is presented: Cn and Dn, t
Publicado em: 1999
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26. Fundamentos geometricos e algebricos da calibração e reconstrução tridimensional : aplicação na analise cinematica de movimentos humanos / Geometric and algebraic basis for calibra tion and threedimensional re construcion. application in the kinematic analysis of human movements
To get information such as position, orientation and size of the object of interest by measuring its image are the basis of the kinematic analysis of the human movement. Video cameras are frequently used for this purpose. The aim of this work is to study Geometric and AIgebraic concepts of the procedures used to calibrate the video cameras and of the reconst
Publicado em: 1999
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27. Estudo cinetico da invertase livre e imobilizada em alginato de calcio
In this work special emphasis was given to the study of the kinetics of sucrose hydrolysis by invertase. The enzyme was used in free as well immobilized in calcium alginate forms. The kinetic parameters ware determined considering the initial rates of reaction, in order to avoid the iinhibition phenomena caused by the products glucose and fructose. The pH an
Publicado em: 1989
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28. FIG : uma linguagem para especificação de figuras
FIG is a programming language for non-interactive specification of bidimensional pictures, Although the language was designed for general purpose picture drawing, it is aimed at integration with typesetting programs so as to allow automatic insertion of pictures into text. Its main features are the definition and use of figures in the same way as procedures,
Publicado em: 1987
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29. Computational models of cortical visual processing.
The visual responses of neurons in the cerebral cortex were first adequately characterized in the 1960s by D. H. Hubel and T. N. Wiesel [(1962) J. Physiol. (London) 160, 106-154; (1968) J. Physiol. (London) 195, 215-243] using qualitative analyses based on simple geometric visual targets. Over the past 30 years, it has become common to consider the propertie