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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

A New Family of Distance Functions for Perceptual Similarity Retrieval of Medical Images

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Autor(es):
Felipe, Joaquim Cezar [1] ; Traina, Jr., Caetano [2] ; Machado Traina, Agma Juci [2]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Dept Math & Phys, BR-14049 Ribeirao Preto - Brazil
[2] Univ Sao Paulo, Dept Comp Sci, Sao Carlos, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF DIGITAL IMAGING; v. 22, n. 2, p. 183-201, APR 2009.
Citações Web of Science: 8
Resumo

A long-standing challenge of content-based image retrieval (CBIR) systems is the definition of a suitable distance function to measure the similarity between images in an application context which complies with the human perception of similarity. In this paper, we present a new family of distance functions, called attribute concurrence influence distances (AID), which serve to retrieve images by similarity. These distances address an important aspect of the psychophysical notion of similarity in comparisons of images: the effect of concurrent variations in the values of different image attributes. The AID functions allow for comparisons of feature vectors by choosing one of two parameterized expressions: one targeting weak attribute concurrence influence and the other for strong concurrence influence. This paper presents the mathematical definition and implementation of the AID family for a two-dimensional feature space and its extension to any dimension. The composition of the AID family with L (p) distance family is considered to propose a procedure to determine the best distance for a specific application. Experimental results involving several sets of medical images demonstrate that, taking as reference the perception of the specialist in the field (radiologist), the AID functions perform better than the general distance functions commonly used in CBIR. (AU)

Processo FAPESP: 04/02215-5 - Desenvolvimento de um framework para recuperacao por conteudo integrando mineracao de imagens: aplicacoes em imagens medicas.
Beneficiário:Marcela Xavier Ribeiro
Linha de fomento: Bolsas no Brasil - Doutorado