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TRUE: um sistema para rastreamento,
localização e identificação de usuários em
ambientes inteligentes

Autores:
Tales Mundim Andrade Porto
Danilo Ávila Monte Christo Ferreira
Fabricio Nogueira Buzeto
Carla Denise Castanho
Ricardo Pezzoul Jacobi

Departamento de Ciência da Computação
Universidade de Brasília
• Ambientes Inteligentes




              +            +   Aplicações




               Middleware
• Informações de Contexto
Temperatura

Luminosidade

  Umidade



                 Quantidade

                 Frequência
  Usuários
                 Onde estão?

                 Quem são?
• Projeto CHIL
 ▫ 15 laboratórios internacionais
 ▫ Identificação baseada na face
 ▫ Não implementa localização
• Smart Flow
 ▫ Sistema multimodal
 ▫ Identificação baseada na face
 ▫ Localização baseado em áudio
• AVIARY E MICASA
 ▫ Dois ambientes
 ▫ Identificação baseada na face
 ▫ Não implementa localização
• Objetivo do Trabalho
                                             Middleware




                     Sistema TRUE

Kinect           (Tracking and Recognizing
                 Users in the Environment)
Identificação
• Desafios
 ▫   Iluminação
 ▫   Ângulos
 ▫   Poses
 ▫   Expressões faciais
 ▫   Maquiagem

• Etapas
 1. Detecção de faces em imagens
 2. Reconhecimento das faces encontradas
Identificação – Detecção Facial
• Viola-Jones
 ▫ Bastante utilizado
 ▫ Alta taxa de detecção
 ▫ Detecção em tempo real
Identificação – Reconhecimento Facial

• Eigenfaces
 ▫ Base de faces
   relativamente grande
 ▫ Infere as principais
   características
 ▫ Reduzido número de
   cálculos
Localização
• Métodos
 ▫ Tempo de Vôo (TOF - Time of flight)
 ▫ Luz Estruturada
Rastreamento
• Etapas
 1. Detecção da entidade
 2. Rastreamento da entidade detectada
Rastreamento - Detecção
                Detecção




 Detector de   Subtração de
                              Segmentação
   pontos         fundo
Rastreamento
           Rastreamento




  Pontos       Silhuetas   Núcleo
Sistema TRUE - Arquitetura
TRUE – Módulo de Registro
TRUE – Módulo de Registro
TRUE – Módulo de Rastreamento
TRUE – Módulo de Rastreamento
TRUE – Módulo de Reconhecimento
TRUE – Módulo de Reconhecimento




    1.   Pré-processamento da imagem
    2.   Detecção facial
    3.   Processamento da imagem da face
    4.   Reconhecimento facial
TRUE – Módulo de Reconhecimento




   Viola-Jones        Eigenfaces
TRUE – Módulo de Integração
TRUE – Módulo de Integração
Ambiente e Resultados
Experimentais




          Laboratório LAICO/UnB
Testes – Rastreamento - Detecção




1           2         3         4
Testes – Rastreamento - Oclusão
                    1           2




                    3           4



  Oclusão parcial

                    5           6




                        Oclusão momentânea
Testes – Rastreamento
Testes – Localização
Testes – Localização
           Eixo Z                     Eixo X




  Erro: (3,21mm, 111,75mm)   Erro: (27,19mm, 79,29mm)
Testes - Identificação



                     95%




            • Verdadeiro Positivo
            • Verdadeiro Negativo
            • Falso Negativo
                   Etapas
                  Cenários
Testes – Identificação – 1º Cenário
Testes – Identificação – 2º Cenário




                           +8,87%
                           -11,27%
                           +2,4%
Testes – Integração
Conclusão                               Middleware




                Sistema TRUE

Kinect      (Tracking and Recognizing
            Users in the Environment)
Trabalhos Futuros
Apresentação do Sistema TRUE

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Apresentação do Sistema TRUE

Editor's Notes

  1. Falar da imagemFalar das aplicaçõesConectar com o middleware