Um Sistema de Identificação Automática de Faces para Ambientes Virtuais de Aprendizagem

• Ano de defesa: 2009
• Autor(a) principal: Rolim, André Lira
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal da Paraí­ba; BR; Informática; Programa de Pós-Graduação em Informática; UFPB
• Palavras-chave em Português: Sistema biométrico; Reconhecimento facial; Ambientes virtuais de aprendizado; Educação à distância; Biometric systems; Face recognition; Virtual learning environment; Distance learning; CIENCIAS EXATAS E DA TERRA::CIENCIA DA COMPUTACAO
• Link de acesso: https://repositorio.ufpb.br/jspui/handle/tede/6061

The increased demand for Distance Education and Virtual Learning Environment (VLE) appearance and development are in a scenario where minimizing distances and boosting tracking of students are aspired. However, current VLE don t have the necessary resources to identify the users in the development of their activities. This dissertation presents an online face identification system for use in VLE that has client-server architecture and combines stages of face recognition processing to modules of a mechanism monitor remote users via a webcam. To accomplish the face recognition was used a approach to select coefficients of Discrete Cosine Transform (DCT), which it obtained 97.12% rate of correct answers in a database of images collected without normalization of faces. This work describes, in addition to architectural design, a prototype implemented and presents results obtained and illustrates its operation in an example implementation. Finally, there are a discuss the results and future prospects for the system.