A License Plate-Recognition Algorithm for Intelligent Transportation System Applications (2006)...
Transcript of A License Plate-Recognition Algorithm for Intelligent Transportation System Applications (2006)...
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A License Plate-Recognition Algorithm for Intelligent Transportation System
Applications (2006)
Christos Nikolaos E. Anagnostopoulos, Ioannis E. Anagnostopoulos, Vassili Loumos, and Eleftherios Kayafas.
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IntroduçãoMelhorar a segurança e
mobilidade do transporte e aumentar a produtividade;
Sistemas de pagamento eletrônico;
Sistema de controle de acesso.
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IntroduçãoSliding Concentric Windows
(SCW);
Análise de componentes conectados;
Rede neuronal probabilística (PNN).
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Sliding Concentric Windows (SCW)
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Sliding Concentric Windows (SCW)Utiliza o desvio padrão e o valor
médio para descrever irregularidades locais.
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Localização da placa
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Localização da placa
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Segmentação de caracteres
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Rede neuronal probabilística (PNN) Treinamento supervisionado;A camada do meio representa uma
implementação de um classificador neuronal Bayes;
As redes PNN usam os dados de treinamento para desenvolver funções de distribuição que, por sua vez, são usadas para estimar a chance de um vetor de características pertencer a uma dada categoria.
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Rede neuronal probabilística (PNN)
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Problemas e restriçõesCaracteres sobrepostos:
Caracteres semelhantes: O e 0, 0 e D, 2 e Z, 1 e I, D e O...
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Resultados1334 imagens capturadas em
diferentes ambientes de iluminação;
96,5%: placas devidamente segmentadas;
89,1%: desempenho de reconhecimento placa inteira.