DEDICATÓRIAAos meus pais queridos pais, Noel e Ieda, Pelo constante incentivo e grande amor dedicado.
Ao meu irmão Rogerio e à minha prima Vanessa,Como estímulo à busca do conhecimento.
AGRADECIMENTOSA Deus pela paz, o amor, o conhecimento e a motivação que tem me concedido no decorrer de minha vida.Aos Professores Paulo César Lima Segantine e Irineu da Silva pela valiosa orientação e contribuições concedidas durante todas as etapas de realização deste trabalho.Aos meus pais, Noel e Ieda, a quem dedico as minhas alegrias e os bons resultados do meu trabalho pelo carinho e incentivo ao longo de todas as etapas de minha vida. The mathematical model for the geometric transformation of coordinates is used to georreference information extrated from digital maps. The performance of coordinate transformation models is directly related to accuracy of control points identified in the map, since by means of the utilization of GNSS technology, it is not difficult to measure the coordinates of a point in the ground with accuracy. For this reason, it is possible to obtain a reliable georreferencing if the coordinates of the control points are accurately positioned on a map. However, as most of Brazilian municipal districts maps are old and out-of-date, it is difficult to locate a point accurately out of the geographic elements represented in the map. Depending on both the quality of the digital map and the technique used to locate the points, such coordinates may show distinct levels of reliability as a function of their accuracy. If the different accuracy of the control points is not taking into account, the performance of the coordinate transformation model can be reduced. Depending on map scale, this difference can make impracticable a study that depends on a good accuracy of the coordinates of points obtained from a georreferecend cartographic product. In order to avoid that the performance of the coordinate transformation model reduce the reliability of the georreferencing, it is important that each coordinate receives an appropriate weight according to its accuracy. In this context, the objective of this research was to develop a method, validated through a case study, that could impart reliability to georreferencing, as a function of the accuracy of the coordinates of the control points identified on a map, using a mathematical model to coordinate transformation. The key-point is to attribute a weight to each control point related to its accuracy level. The performance of this procedure was evaluated both for a high quality, standard map, and for a map with unknown quality. Different evaluations were performed and the best results were obtained using the procedure of attributing weights to the control points related its accuracy. As a contribution for the academic and technical areas, this research brought light to a question not considered until now, that is the importance of attributing weights to the coordinates of the control points as a function its accuracy in the digital map. Georreferencing becomes more relia...